Page 1 G P S 1 5 5 X L P i l o t ’ s G u i d e a n d R e f e r e n c e...
Page 3: Foreword
Tel: 913-397-8200 GARMIN (Europe) LTD, Unit 5, The Quadrangle, Abbey Park, Romsey, Hampshire S051 9AQ, UK Tel: 011-44-1794-519944 GARMIN (Asia) Corp., 3rd Fl., No. 1, Lane 45, Pao-Hsing Road, Hsin Tien, Taipei, Taiwan R.O. C. Tel: 011-886-02-2917-3773 Web Site Address: www.garmin.com All rights reserved.
Page 4 (NAVAID), any NAVAID can be misused or misinterpreted and therefore become unsafe. Use the GPS 155XL at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of this Owner’ s Manual and the Flight Manual Supplement, and thoroughly practice using the simulator mode prior to actu- al use.
Page 5 Accessories & Packing List Congratulations on choosing the finest, most advanced panel mount IFR GPS receiver available. The GPS 155XL represents GARMIN’ s commitment to provide an accurate, easy-to-use GPS for all of your aviation needs. Before installing and getting started with your unit, please check to see that your package includes the following items.
Page 6: Warranty
(913) 397-8200 FAX (913) 397-8282 Every GARMIN GPS is built to exacting standards to provide years of trouble-free service. GARMIN warrants this product to be free from defects in materials and workmanship for one year from the date of purchase.
Page 7: Table Of Contents
GPS 155XL Takeoff Tour ........1-9...
Page 8: Table Of Contents
Appendix C: Simulator ........111 Appendix D: GPS 155XL Messages and Abbreviations ... . .113 Appendix E: Specifications .
Page 9: Key And Knob Functions
In general, using the knobs will decrease key- strokes and time spent using the GPS 155XL. Experiment to find the most effective way to use the GPS 155XL to your advantage.
Page 10 The message key is used to view system messages and to alert you to important warnings and requirements. This key is also used to access the GPS 155XL’ s unit settings. See Section 6 for more information on messages and unit settings.
Page 11: Gps 155Xl Takeoff Tour
The Takeoff Tour assumes that the receiver and antenna have been properly installed and you have not changed any of the GPS 155XL’ s default settings. If you have changed any of the factory default settings (position format, units of measure, selectable fields, etc.), the pictures shown here may not match your configuration.
Page 12: Acquiring Satellites
This is a good indication that you are receiving signals and satellite lock will occur. Following the first-time use of your GPS 155XL, the time required for a position fix will vary — usually from one to two minutes.
Page 13 • Present Position— Latitude and longitude displayed in degrees/minutes • Reference Waypoint— The bearing and distance to the nearest airport The position page is one of seven pages available under the GPS 155XL’ s N key: • NAV summary page •...
Page 14: Direct-To Navigation
The GPS 155XL uses direct point-to-point navigation to guide you from takeoff to touchdown in the IFR environment. Once a destination is selected, the unit will provide speed, course and distance data based upon a direct course from your present position to your destination.
Page 15 In addition to the destination field and graphical CDI, the GPS 155XL NAV summa- ry page features five selectable fields for various navigation data so that the page may be configured to your own preferences (see Section 1 for more information). The default settings for the NAV summary page are: •...
Page 16 TAKEOFF TOUR Map Page The map display may be oriented along your ground track (track up), course (desired track up) or fixed at north up. Desired track up or north up settings show your present position with a dia- mond symbol instead of the airplane symbol. Distance and bearing to waypoint, destination waypoint name and desired track are shown on the left hand side of the map page.
Page 17: Navcom Page
2. Press to decrease the map scale and show a smaller area (or turn Another page available under the GPS 155XL’ s N key is the navigation communications (NAVCOM) page. It provides you with a complete list of airport fre- quencies at your departure and arrival airports, allowing convenient selection of fre- quencies you’ll need along your flight path.
Page 18: Nearest Waypoints
To view additional nearest airports, rotate the K knob. The GPS 155XL’ s T key provides the nine nearest airports, VORs, NDBs, inter- sections, user waypoints and any SUA (special use airspace) alerts, as well as the two closest FSS (Flight Service Station) and center (ARTCC) frequencies for your present position.
Page 19 30 seconds when the unit senses that power is off. After 30 sec- onds, the GPS 155XL will shut off. If you wish to continue operating the unit, press any key during the countdown period, and the GPS 155XL will continue operating from the backup battery.
Page 20: Section 1: Navigation With The Gps 155Xl ( N Key)
Whenever the N key pages are in use, the indicator light (U) next to the N key will illuminate. If the GPS 155XL requires you to enter data on a navigation page, a message prompt with specific instructions will appear and the indicator will flash. If you leave the NAV page sequence for another set of pages, the last NAV page dis- played will reappear when you return to the nav sequence.
Page 21 CDI field will display a ‘No active waypoint’ message, and only speed and track data will be available. The CDI field is also used to display the GPS 155XL’ s turn anticipation and waypoint alert data during route and approach operations (see sections 4 and 5).
Page 22 NAV KEY SECTION Configuring the NAV Summary Page NORTH NORTH WPT 1 The following functions may be displayed in the distance field: • dis— Distance from present position to the ‘active to’ waypoint. • str— Steer direction and distance, or digital crosstrack error. An ‘L’ or ‘R’ indicates which direction to steer, while the distance value indi- cates how far you are off course.
Page 23 Selected Course The GPS 155XL’ s course select feature allows the pilot to define the inbound course to, or outbound course from, the ‘active’ waypoint, using an external HSI. Once the course select function is activated, the selected course will be displayed next to the desti- nation waypoint identifier and the CDI will provide guidance relative to the desired course.
Page 24 Data Fields The next page available from the GPS 155XL’ s N key is the map page. The map page displays your present position, using an airplane symbol (in track up mode) or a position diamond (in other orientation modes), along with nearby airports, VORs, NDBs, intersections, user waypoints and airspace boundaries.
Page 25 To select a map scale: 1. Press to increase the map scale and show a larger area (or turn 2. Press to decrease the map scale and show a smaller area (or turn An autozoom feature is available which will automatically adjust from an en route scale of 300 through each lower scale, stopping at a scale of 1 as you approach your destination waypoint.
Page 26 • Unicom • TRSA The next page available from the GPS 155XL’ s N key is the navigation communi- cations (NAVCOM) page. The NAVCOM page provides a list of the airport frequencies at your departure and arrival airports, allowing convenient selection of frequencies you’ll need along your flight path.
Page 27 ‘tx’ – transmit only ‘pt’ – part time frequency The GPS 155XL position page displays the graphical CDI along with your present latitude and longitude, altitude and a reference waypoint field. The altitude and refer- ence waypoint fields are selectable to configure the page to your own preferences and current navigation needs.
Page 28: Position Page
(Note: the waypoint cate- gory is listed as ‘wpt’ rather than ‘VOR’ because the GPS 155XL is not using the nearest VOR.) To change the altitude field: 1. Press to obtain a cursor.
Page 29 The GPS 155XL’ s satellite status page provides satellite information to monitor GPS coverage and receiver performance. This is helpful when you may be experienc- ing low signal levels due to poor coverage or installation problems. To view the satellite status page: 1.
Page 30 The receiver status field, located on the second line (left side) of the page, will display the following messages under the appropriate conditions: Search Sky - The GPS 155XL is searching the sky for visible satellites. You will be informed with the message ‘Searching the Sky’.
Page 31 The third and fourth lines of the satellite status page provide the satellite number and signal strength of each satellite in view. The satellite status page shows signal strength for up to eight satellites at a time. If additional satellites are being received an arrow on the ‘sat’...
Page 32: Trip Planning
Trip planning with values calculated between two waypoints. In addition to the five other navigation pages, the GPS 155XL features two menu pages to perform a host of planning and navigation functions. NAV Menu 1 provides access to the following functions: •...
Page 33: Density Altitude
The density altitude/true airspeed function is also accessed from NAV Menu 1. Density altitude is the theoretical altitude at which your aircraft will perform depending on several environmental conditions, including air pressure and total air temperature (the temperature including the heating effect of speed, read on a standard outside tem- perature gauge on most aircraft).
Page 34: Fuel Planning
Press The GPS 155XL will calculate the range and endurance (i.e., how long the fuel will last) of your aircraft. These are found in the first field on the bottom row of the page.
Page 35: Winds Aloft
The GPS 155XL’ s winds aloft function is used to calculate the true direction and speed of any winds, and indicates whether you are flying with a head wind or tail wind, and the wind speed. To calculate winds aloft: 1.
Page 36 9. Press to activate the vertical navigation function. If you enter a value greater than the value computed by the GPS 155XL, the time remaining before the maneuver is to begin will be displayed. When the countdown reaches 15 seconds, you will be informed with the message ‘Start altitude chng’. The VNAV func- tion will automatically be cancelled if the active direct-to or route is changed in any way, and you will be informed with a ‘VNAV cancelled’...
Page 37 1. To delete a checklist item, highlight the desired item and press 2. To delete an entire checklist, highlight the desired list and press The GPS 155XL’ s NAV Menu 2 provides access to various timer and planning func- tions, including: •...
Page 38 The GPS 155XL’ s trip timer will automatically keep track of the duration of your current trip and can be configured to run when the GPS 155XL is on, or only when your ground speed exceeds a specified value (see Section 6).
Page 39: Raim Prediction
7. Press to compute information. When the computations are complete, the GPS 155XL will display whether or not RAIM is available for the specified waypoint at the specified date and time, +/- 15 minutes of your ETA. Refer to the table on page 99 for specific RAIM protection limits as they relate to CDI scale figures.
Page 40 ‘Change oil’ to be displayed in 30 hours, the message ‘Change oil’ will be displayed after the GPS 155XL has been running in Normal mode for 30 hours. After appearing, the message will be displayed each time the GPS 155XL is turned on until it is changed or deleted. To enter a scheduled message: 1.
Page 41 The GPS 155XL’ s sunrise/sunset planning function allows you to calculate the time of sunrise or sunset at any waypoint or your present position for a specified date. To calculate sunrise and sunset times at a waypoint or at your present location: 1.
Page 42: Section 2: Waypoint And Database Information ( W Key)
Waypoint information is available through four primary waypoint pages accessible from the GPS 155XL’ s W key. The waypoint pages may be scrolled through by pressing the W key and rotating the outer knob until the desired page is displayed, or by press- ing the W key repeatedly.
Page 43: Waypoint Categories
The GPS 155XL organizes waypoints into one of five waypoint categories for your convenience. Each waypoint category provides different types of detailed information for a selected facility: • Airports - Identifier, city/state, country, facility name, position (lat/lon), elevation, fuel services, control and approach information, IFR proce- dures, runways and communication frequencies.
Page 44: Entering Waypoints
5. Use to enter the location or the name, and press As the information is entered, the GPS 155XL will display any entries in its data- base that match the letters you have entered. If duplicate entries exist for the entered identifier, name or location, additional entries may be viewed by rotating K.
Page 45: Airport Information
Once a waypoint category and identifier have been selected, the GPS 155XL will provide extensive information through a set of waypoint pages for the selected cate- gory. The pages available for each waypoint category are presented here in the order they appear on the waypoint menu page: airports, VORs, NDBs, intersections and user waypoints.
Page 46 Airport runway page. The down arrow next to the identifier indicates additional runways may be displayed by rotating the K knob. The GPS 155XL features six airport pages: airport identification— allows entry of desired airport by identifier, facility name or city; displays region and/or country of facility.
Page 47 Elevation— In feet or meters Usage/Fuel— If the airport is for military use, it will display ‘military’. If it is private, the GPS 155XL will display ‘private’. If it is a public airport, it will display the fuel type(s) available: •...
Page 48 Whenever there are more than two available procedures for a selected category, the GPS 155XL will display a scrolling arrow prompt on the left side of the list. To view additional procedures, simply rotate K with the cursor removed. As you scroll through the list, the arrow prompt will point “down”...
Page 49 The airport communication page displays the radio frequencies and usage for the selected airport, as well as sector and altitude restrictions. To view the communication page from any of the airport information pages: 1. Rotate with the cursor removed to display the communication page. 2.
Page 50 WPT KEY SECTION Airport Runway Page Airport runway page for KICT. To view additional runways, rotate the the direction of the arrow prompts. The airport runway page displays runway designations, length, surface and lighting for the selected airport, as well as ILS/localizer and/or pilot-controlled lighting frequencies.
Page 51: Vor Information
VOR Information The GPS 155XL features three VOR waypoint pages: VOR identification— allows entry of desired VOR by identifier, facility name or city; displays region and/or country of facility. VOR position— allows entry of desired VOR by identifier; displays latitude, longitude and frequency; provides magnetic variation, weather broadcasts and DME/TACAN information.
Page 52: Ndb Information
NDB Information NDB Position Page The GPS 155XL also uses identification, position and comments pages for NDB information. The NDB waypoint pages are used in the same manner as VOR pages: NDB information is accessed by entering the desired facility’ s identifier, city or name (see page 34) on the NDB identification page.
Page 53 Intersection Information Intersection Position Page The last database waypoint category available is intersections. Two intersection pages are available: intersection position and intersection comments. Intersections may be entered by identifier only (not city or name) on either intersection page. To scroll through the intersection pages: 1.
Page 54 In addition to the airport, VOR, NDB and intersection waypoints contained in your NavData® card, the GPS 155XL allows you to store up to 1,000 user-defined way- points. Once a user waypoint is created, two user waypoint pages will display the fol- lowing information: •...
Page 55: User Waypoints
If the waypoint identifier entered does not exist, you will be prompted to select a method to enter the new waypoint’ s position into memory. If the waypoint exists (i.e., you’re just reviewing or editing a user waypoint), skip step 4 and move on to the next set of instructions.
Page 56 To create a user waypoint from your present posi- tion, leave the reference waypoint field blank and enter a bearing and distance from your present position. The GPS 155XL will calculate the new waypoint’s coordinates automatically. To enter/edit a user waypoint position from a reference waypoint: 1.
Page 57: Creating Waypoints
This will display the ‘Save waypoint’ screen, which will allow you to rename the waypoint and choose the route to which it should be added. The GPS 155XL will assign the next available three-digit number as the default waypoint name, preceded by a ‘+’...
Page 58 ‘Proximity overlap’. This message will be displayed each time you turn on the GPS 155XL for as long as the overlap remains. Warning: If you enter the overlap area you will only be informed of the nearest proximity waypoint.
Page 59: User Waypoint
The third page available from the GPS 155XL’ s W key is the user waypoint list, which can be used to quickly scan, review, rename or delete user waypoints. To display the user waypoint list: 1. Press and use to display the user waypoint list.
Page 60 Entering waypoint comments Waypoints with comments page The last page available through the GPS 155XL’ s W key is the waypoints with comments page, which lists all waypoints that have a user comment. User com- ments may be added to 250 waypoints stored in the user or NavData allow you to note two lines of special information concerning a particular waypoint.
Page 61 The GPS 155XL’ s extensive waypoint database makes it possible for several way- points to share the same identifier. To ensure that you are selecting the waypoint desired, the GPS 155XL will always offer the waypoint confirmation page (which shows the waypoint’ s position) when an identifier is entered for a particular function.
Page 62: Waypoint Scanning
(identifier, facility or city name). 5. Use to enter the letters of the identifier, city or facility name. The GPS 155XL will scan the database and display the first waypoint that matches your entry. 6. Press to accept the waypoint, and function being used.
Page 63: Section 3: Nearest Waypoints ( T Key)
FIR) points of communication, plus alert you to any Special Use Airspace (SUA) you may be in or near. The T key can be used in conjunction with the GPS 155XL’ s direct-to function to quickly set a course to a nearby facility in case of an in-flight emergency.
Page 64 O. Rotating O continuously to the left will stop page selection on the nearest airport category. The next page available under the GPS 155XL’ s T key is the SUA (special-use airspace) alert page. The SUA alert page will alert you to as many as nine controlled or restricted airspaces near or in your flight path, according to the following conditions: •...
Page 65 To toggle between the SUA name and controlling agency display: 1. Rotate one stop in either direction. If the SUA name or controlling agency is too long to fit on the display, the GPS 155XL will automatically scroll to display the rest of the information. Alert type...
Page 66 SECTION NRST KEY SUA Messages SUA alert page Frequency information for SUA. If the informa- tion is too long to fit on the display, the GPS 155XL will automatically scroll to display the rest of the information. The following SUA types can appear in the SUA type field: Message Airspace Type alrt...
Page 67 All SUA alert messages except for prohibited areas may be turned on or off through the GPS 155XL’ s unit settings options, found under the M key (see page 105). Alerts for prohibited areas will always be displayed, regardless of unit settings or operating mode.
Page 68: Section 4: Direct-To ( D Key) & Route Navigation ( R Key)
ACTIVE LEG KTUL As you pass each waypoint in the route, the GPS 155XL’ s automatic leg sequenc- ing and turn anticipation features will automatically select the next waypoint as the ‘active to’ waypoint and provide smooth steering guidance around the turn. If you are not currently navigating a particular route leg (e.g., your starting position is not a...
Page 69 1. Place the cursor over the destination field on the NAV summary page. 2. Press \. The destination field will go blank. 3. Press E. The GPS 155XL will resume navigating Route 0 (the active route) if available. to accept the direct-to confirmation page.
Page 70 5. Press to accept the course, and The GPS 155XL will now use the selected course for your CDI and DTK steering guidance. To reset the course to a GPS-calculated course from your present position, simply press D, followed by E.
Page 71 The GPS 155XL lets you create up to 20 routes (numbered 0 through 19), with up to 31 waypoints each. Routes are created, copied and edited through the R key, which features five route pages selectable from the GPS 155XL’ s outer knob.
Page 72 4. Cumulative distance of route 5. Comments/Parallel track offset field The GPS 155XL’ s route catalog page is used to create, edit, delete or copy routes, and serves as the main page for a host of functions. These include route activation, determining the closest point of approach and search-and-rescue operations.
Page 73: Editing Routes
The route editing function allows you to create new routes and edit existing routes. Creating routes before takeoff can help make route operations faster and easier during your flight. To create or edit a route from the route catalog page: 1.
Page 74: Activating Routes
‘activate?’. Press After travelling a route or creating a route with the GPS 155XL’ s AutoStore™ feature, the route activation field may be used to activate the route in reverse order. To activate a route in reverse order: 1.
Page 75: Copying Routes
To copy a route: 1. Press and use to display the route catalog page. 2. Use to display the route to which you would like to copy. The route must be empty. 3. Press and rotate to select ‘copy?’. Press 4.
Page 76 Performing a search-and-rescue operation. The GPS 155XL’ s search-and-rescue function provides navigation guidance for search-and-rescue operations, navigating in a ladder pattern to maximize coverage and efficiency. This is done in reference to two waypoints called ‘anchor waypoints’. The first leg will be a specified distance from the line connecting the anchor waypoints.
Page 77 The GPS 155XL’ s Route RAIM Prediction Function evaluates enroute RAIM availability over the entire route that the pilot intends to fly. Route RAIM Prediction ensures that satellite coverage will be sufficient to meet the protection limits defined by BRNAV/RNP-5 (FAA Advisory Circular 90-96).
Page 78 ROUTE NAV SECTION Route RAIM Prediction Figure 3 Figure 4 The time required for RAIM prediction computation depends on the route distance (i.e., 1000 nautical miles = approximately 2 minutes) and the enroute speed. The longer the route distance and the slower the enroute speed, the longer the time. If RAIM unavailability is detected based on the associated requirement, the prediction process will stop immediately and display ‘NO RAIM’...
Page 79: Parallel Track
During route navigation, it is sometimes desirable to navigate a specified distance away from the ‘active leg’ to help avoid certain airspaces or regions. The GPS 155XL’ s parallel track feature will automatically guide you along a selected offset from the active leg.
Page 80: Active Route
By understanding the relation- ship between the active route and NAV summary pages and the role of the waypoint sequencing (GPS SEQ) switch, you’ll be able to get the most out of the GPS 155XL’ s advanced route and approach features.
Page 81 The distance field can be selected to display cumulative (‘cum’) distance or the dis- tance for each route leg (‘leg’). If cumulative is selected, the first leg’ s distance will be displayed. The second leg will represent the first leg’ s distance plus the second leg, and so on.
Page 82 SID or STAR itself. For example, if you are flying a route with an armed approach, the GPS 155XL will automatically provide the initial approach fix (IAF) for the selected approach as your ‘active to’ waypoint. If you have been vectored directly to the final approach fix (bypassing the IAF), you can manually “skip ahead”...
Page 83 The GPS 155XL will automatically sequence to the next leg when you are abeam the ‘active to’ waypoint on the curved transition segment, and the to/from indicator on the CDI will flip momentarily.
Page 84: Section 5: Approaches, Sids And Stars ( R Key)
The non-precision approaches available in the GPS 155XL are executed using the GPS route features covered in Section 4, so it’ s important to understand routes before attempting approach navigation. A GPS approach is a sequence of waypoints linked together as an approach route which replaces your destination airport waypoint when selected.
Page 85 The NAV/GPS switch determines which data (GPS or NAV1) will be displayed on the HSI and used by the autopilot/flight director. The current selection will be indicated by an annunciator light. If power to the GPS 155XL is lost, the system will automatically revert to NAV1.
Page 86 (e.g., procedure turn, IAF and FAF at the same waypoint). Whenever the GPS SEQ switch is set to the HOLD position, the GPS 155XL allows you to select the desired course to/from a waypoint using the HSI, much like a VOR.
Page 87 Think through the approach examples— this will assist you in getting the greatest benefit from the GPS 155XL. There are a few basic rules that apply to all GPS approaches. Remembering these rules will assist you in understanding the approach procedures and ensure the greatest margin of safety for your flight.
Page 88 • During a GPS approach, keep in mind that your external HSI will display the same CDI needle deflection and scale as the CDI on the GPS 155XL, which will transition from 5.0 to 0.3 nm through the approach. Also note that unlike...
Page 89 Flying A Typical Approach The non-precision approaches available from the GPS 155XL will all follow the same general flow of events described below. Specific details and instructions relating to each step, along with several approach examples are provided later in this chapter.
Page 90 6. Missed Approach Procedure The GPS 155XL’ s automatic waypoint sequencing stops at the missed approach point. Once you have crossed the MAP, the GPS 155XL will give you the option of flying direct to the missed approach holding point: a.
Page 91 Selecting and Loading an Approach When an arrival airport is selected with the direct-to key (or created and activated in a route to the arrival airport), the approaches for your arrival airport become available through the approach select page, which can be viewed by pressing R and rotating the outer knob.
Page 92 5.0 nm to the 1.0 nm scale as you make your way to the FAF. If the approach has been disarmed and the aircraft is within 3 nm of the FAF, the GPS 155XL will prompt you to re-arm the approach.
Page 93 5. Upon reaching the FAF, the GPS 155XL will automatically sequence to the MAP waypoint. To fly a missed approach procedure: If an approach is terminated, the GPS 155XL may be used to navigate to the missed approach holding point using one of the following procedures.
Page 94 5. Set the GPS SEQ switch to the AUTO position for navigation to the missed approach holding point. After a missed approach, the GPS 155XL will allow you to repeat the same approach procedure and select the approach waypoint to which you have been cleared as the next active to waypoint.
Page 95 The GPS 155XL’ s approach select page allows you to review the available approach pro- cedures at the destination airport. From the procedures list, you may select and activate a new procedure on the fly. The active approach is indicated by an on-screen asterisk, and the scrolling arrow prompt indicates which direction to scroll to view additional procedures.
Page 96 APPROACH NAV SECTION GPS Approach Examples BAY CITY ff13 344 BYY MAGUS 1800 116 (7.9) n13hp 10 NM Ref: NDB RWY 13 approach at Bay City TX (3R1) GPS APPROACH EXAMPLES In the examples that follow, the GPS waypoints are shown along the approach path.
Page 97 1. Select the destination airport (KFDK) using the to the destination airport. 2. Select the desired approach (GPS RW05) from the approach select page. The GPS 155XL will automatically select MRB as the IAF since it is the only IAF available.
Page 98 2. Fly towards the IAF (JAMES) of the approach. 3. Two nautical miles before crossing the IAF, set the GPS SEQ switch to the HOLD position. This prevents the GPS 155XL from automatically sequencing to the MAP (Riverside) before the required procedure turn is completed.
Page 99 Example 3 uses the VOR/DME RWY 21 approach into Topeka/Forbes Field Airport (KFOE) and illustrates an approach based on a DME arc. Although DME arc approaches are not based on a direct course, the GPS 155XL will still provide approach navigation guidance through the arc by constantly displaying your distance and bearing from the DME reference navaid on the position page.
Page 100 APPROACH NAV SECTION VOR/DME Arc Example VOR/DME RWY 21 TOPEKA/ FORBES FIELD (FOE) 3000 205 (7) TOPEKA (IAF) 2600 MISSED APPROACH CLIMB TO 3000 VIA HEADING 240 AND TOP R-213 TO ERASE 25 DME AND HOLD. ERASE 2600 MISSED APPROACH VORTAC CLIMB TO 3000 VIA HEADING 240 AND TOP R-213 TO...
Page 101 IAF from the database and set the GPS SEQ switch to HOLD while you fly the vectors to the active approach waypoint. To accom- modate radar vectors, the GPS 155XL allows manual selection of any approach way- point as the destination waypoint.
Page 102 Activating SIDs Selecting a SID. Selecting a SID transition. The Jeppesen database used in the GPS 155XL features standard terminal arrival routes (STARs) and standard instrument departures (SIDs) that may be placed into any active or stored route. Available SIDs may be selected for the departure airport at any time in the active route as long as the departure airport is the first route waypoint and the route con- tains more than one waypoint.
Page 103 The SID select page also allows you to review all the available SIDs for the depar- ture airport and select, delete or change the active SID. To replace/delete the active SID: 1. Press and rotate until the SID select page appears. 2.
Page 104 Selecting a STAR. Selecting a STAR transition. Standard Terminal Arrival Routes (STARs) used in the GPS 155XL are selected and activated with the same procedures as SIDs. Available STARs may be selected for the destination airport at any time in the active route as long as the destination air- port is the last waypoint in the active route or the direct-to waypoint.
Page 105 The STAR select page also allows you to review all available STARs for the desti- nation airport and select, delete or change the active STAR. To replace/delete a STAR: 1. Press and rotate until the STAR select page appears. 2. Press .
Page 106: Section 6: Messages And Unit Settings ( Key)
Section 6 Messages and Unit Settings The GPS 155XL’ s M key provides access to system messages and allows you to customize the unit to your own preferences through a settings submenu. Whenever the GPS 155XL needs to alert you to a navigation or system message, the annunciator light (U) next to the M key will flash.
Page 107: Unit Settings
The GPS 155XL’ s map page is designed to be a flexible tool that can be custom- tailored to your navigation needs. The map setup page provides access to many of the features and functions that will help you configure the map page to your own preferences.
Page 108 SECTION UNIT SETTINGS Map Page Setup The automatic zoom feature will automatically adjust the map display through progressively lower scale settings as you approach your destination waypoint. A scale setting of ‘200’ for airports will display airport locations on the map display for all scales from ‘200’...
Page 109: Cdi Settings
‘off’ to never display. The next page under the settings submenu is the CDI settings page, which allows you to define the scale of the GPS 155XL’ s course deviation indicator. To change the CDI scale: 1. Press and hold , and rotate to select the ‘CDI Settings’...
Page 110: Magnetic Variation
‘user’ setting will correct information to an entered value. The GPS 155XL’ s arrival alarm can be set to notify the pilot with a message when you have reached a user-defined distance to a final destination waypoint (the direct-to way- point or the last waypoint in a route).
Page 111 During this time, the GPS 155XL will continue to navigate and track satellites, but will not backlight the display until a key is pressed or a knob is turned.
Page 112: Display Settings
SECTION UNIT SETTINGS Display Settings The display contrast may be set to automatically adjust to varying lighting conditions, using the built-in photocell. Setting the display mode to ‘negative’ will display on-screen characters as light green on a black background. This setting is suitable for night operation.
Page 113 To change the backlighting intensity: 1. Press and hold , and rotate to display the ‘Backlight intensity’ page. 2. Press to highlight the ‘mode’ field. 3. Rotate to select ‘auto’ or ‘manual’. 4. If ‘manual’ is selected, rotate to select the desired backlighting level. The trip timer provides a running clock on NAV Menu 2 (see page 28) which can be configured to run either when power is on or when your ground speed exceeds a user-defined minimum.
Page 114: Units Of Measure
Default units of measure settings. Units of measure settings with all metric values displayed. The GPS 155XL can be configured to display data in standard or metric units of measure. These apply to: distance, position, speed, altitude, fuel, pressure and temperature.
Page 115: Altitude Buffer
The Special Use Airspace settings page will allow you to turn the controlled/ restricted airspace message alerts on or off. This will not affect the alerts listed on the nearest page. It will simply turn off the warning message when you are approaching or near an SUA.
Page 116: Map Datums
By default, your unit calculates positions using the WGS 84 map datum. If you are using charts based on another datum, you must set the GPS 155XL to use the same datum. Using a map datum that does not match the charts you are using can result in significant differences in position information.
Page 117 The last page available under the GPS 155XL’ s setup menu is the I/O setup page. The I/O setup page lets you configure the GPS 155XL to input RTCM SC-104 correc- tion data, output to an RS-232 mapping device or a PC (with the optional GARMIN PC Kit or other mapping software) and select the appropriate baud rate.
Page 118 The NavData card supplied with your GPS 155XL can be installed or removed when the GPS 155XL is on or off. Insert the card with the thumb tab at the top, and the beveled corner at the bottom. If the NavData card is not present when the unit is powered on, you will receive a ‘No Jeppesen database’...
Page 119 7. To continue with more data transfer types, repeat steps 4, 5 and 6. Otherwise, press when ‘ok?’ is highlighted. 8. Turn the GPS 155XL off and replace the user data card with a NavData card. The GPS 155XL is now ready for normal operation.
Page 120: Appendix B: Installation And Maintenance Of The Gps 155Xl
2. Rotate the wrench counterclockwise until it stops to ensure the pawl latch is in the proper position. 3. Insert the GPS 155XL into the aviation rack and rotate the wrench clockwise to secure the unit. To ensure proper connector seating, gently press on the left side of the unit until tightened.
Page 121: Appendix C: Simulator
The GPS 155XL’ s simulator mode allows you to plan and practice flights in your home and office using an optional remote battery pack or AC adapter. The simula- tor is not accessible when the GPS 155XL is running off the master avionics switch.
Page 122 4. Press to confirm the ‘ok?’ prompt. The position page will now appear, and you may now use most of the GPS 155XL navigation features for practice and planning. You’ll also receive a ‘Do not use for nav’ message to remind you that the simulator mode should never be used for actual navi- gation.
Page 123: Appendix D: Gps 155Xl Messages And Abbreviations
Appendix D GPS 155XL Messages and Abbreviations The GPS 155XL uses the Message Page to communicate important information to you. Some messages are advisory in nature, others are warnings that may require your intervention. This appen- dix provides a complete list of GPS 155XL messages and their meanings.
Page 124 Configuration reset - The GPS 155XL has detected a failure in its installation configuration memory. Data from the user memory has been used to reset the configu- ration. Check the installation settings for correct- ness.
Page 125 SUA, and your current course will not take you inside. Need alt - press NAV - The GPS 155XL needs altitude input in order to start and/or continue 2D navigation. Press the NAV key and enter your antenna altitude on the position page.
Page 126 Proximty wpt deleted - One or more proximity waypoints were deleted while receiving data from the PC Interface Kit. Pwr down and re-init - The GPS 155XL is unusable until power has been cycled and the unit re-initialized. Abnormal satel- lite conditions may exist.
Page 127 - The STAR was deleted from the route because of insufficient space in the route. Searching the sky - The GPS 155XL is in the search-the-sky mode. Allow the unit to complete data collection before turning it off. Select auto seq mode - The GPS SEQ switch should be set to the ‘Auto’...
Page 128 APPENDIX MESSAGES & ABBREVIATIONS This section of Appendix D provides a complete list of GPS 155XL abbreviations and their meanings. ALT- Altitude DEG- APP- Approach DEP- APR- Approach DIS- APT- Airport Waypoint DME - ARTCC- Air Route Traffic Control Center...
Page 129 ILS- Instrument Landing System Imperial Gallons INT- Intersection Waypoint JET A- Jet Fuel - Type A OBS- JET B- Jet Fuel - Type B Kilometers Per Hour OTH- Kilometers ºC- Knots ºF- Pounds LCL- Local POSN- LEN- Length PRES- LFLOW- Left Fuel Flow LFOB- Leftover Fuel On Board PROX-...
Page 130 APPENDIX MESSAGES & ABBREVIATIONS SEQ- Sequence VNAV- SGL- Signal SID- Standard Instrument VOR- WPT- Departure SLCT- Select SRFC- Surface STAR- Standard Terminal Arrival Route STR- Steer To TACAN- TACtical Area Navigational TAS- True Airspeed TAT - Total Air Temperature TEMP- Temperature TMA- ICAO Terminal Control Area TRK-...
Page 131: Appendix E: Specifications
** Subject to accuracy degradation to 100m 2DRMS under the US DOD-imposed Selective Availability Program. Whenever the GPS 155XL is connected to the optional remote battery pack and power from the master switch is lost, the unit will revert to battery power.
Page 132: Appendix F: Map Datums
APPENDIX MAP DATUMS Appendix F Map Datums ADINDAN Ethiopia, Mali, Senegal, DOS 1968 Sudan AFGOOYE Somalia EASTER ISLAND 1967 AIN EL ABD 1970 Bahrain Island, Saudi Arabia EUROPEAN 1950 ANNA 1 ASTRO 1965 Cocos Islands ARC 1950 Botswana, Lesotho, Malawi, Swaziland, Zaire, Zambia, Zimbabwe ARC 1960 Kenya, Tanzania...
Page 133 LUZON PHILIPPINES Philippines OMAN (excluding Mindanao Isl.) ORD SRV GRT BRITAIN MAHE 1971 Mahe Island MARCO ASTRO Salvage Islands PICO DE LAS NIEVES MASSAWA Eritrea (Ethiopia) PITCAIRN ASTRO 1967 MERCHICH Morocco PORTUGUESE 1973 MIDWAY ASTRO 1961 Midway Island POTSDAM MINNA Nigeria PROV SO AMERICAN ‘56 NAD27 ALASKA...
Page 134: Appendix G: Troubleshooting Q & A
Appendix G Troubleshooting Q & A The GPS 155XL is a precision navigation instrument that offers a wide array of performance navigation features. The ‘Q & A’ section is designed to answer some of the common questions regarding the GPS 155XL’ s capabilities and operation. If you have a problem operating your unit, go through the troubleshooting section and refer to the reference section noted.
Page 135 Can I file slant Romeo ‘/R’ using my GPS? Yes, you may file your flight plan as /R if your GPS 155XL is a certified A1 or A2 installation. If you are flying enroute, you may fly /R with an expired database only after you have verified all route waypoints.
Page 136 TROUBLE- APPENDIX SHOOTING Q & A What does the GPS APR switch do? What is ‘arming’ an approach? The GPS APR switch must be set to the ARM position for an approach to enter the active phase. It may be left in the ARM position to simplify approach operation. Its main function is to provide the pilot with a quick method of deactivating the approach and returning the CDI scale to the 1 nm scale in the event of a missed approach.
Page 137 AUTO position. This allows the the desired course to ‘settle’ prior to the GPS 155XL using it. Once the GPS SEQ switch is set back to the AUTO position, the GPS 155XL will use the HSI course until you have crossed the active-to waypoint and sequenced to the next route waypoint.
Page 138 When does the CDI scale change, and what does it change to? Whenever an approach is selected and armed, the GPS 155XL will begin a smooth CDI scale transition from the 5.0 nm to the 0.3 nm scale 30 nm from the destination airport (see left).
Page 139 To activate navigation to the first missed approach waypoint after crossing the MAP, press D, then E. The GPS 155XL will provide direct navigation to the holding point. If you do not have direct clearance to the holding point, set the GPS SEQ switch to the HOLD position until you have intercepted the inbound course to the holding point.
Page 140: Appendix H: Index
APPENDIX INDEX Appendix H Index Abbreviations ....118-120 Cautions ......ii Accessory list .
Page 141 Display contrast....102 Display mode ....102 Inner knob .
Page 142 Reference waypoint ....18 Removal of the GPS 155XL ..110 Renaming user waypoints ... . 49 Table of contents .
Page 143 Trip planning ..... 22 Zoom in/out keys....vii, 7, 15 Trip timer .
Page 146 © 1999 GARMIN Corporation GARMIN International, Inc. 1200 East 151st Street Olathe, KS 66062 GARMIN (Europe) LTD Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ, UK GARMIN (Asia) Corp. 3rd Fl., No. 1, Lane 45, Pao-Hsing Road, Hsin Tien, Taipei, Taiwan R.O.C.

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