Patent No. 1211639C. Israel Patent Nos. 135,174, 153,460, and 155,983. All rights reserved. No part of this manual may be reproduced, stored, or distributed without written permission of Nighthawk Flight Systems, Inc. Additional copies of this manual are available from: Nighthawk Flight Systems, Inc.
Manual Supplement for operation and limitations on the use of installed equipment. Note: Because aircraft vary in their installed equipment, it is important to note that what is displayed on the SA4550 may vary depending on the presence or absence of equipment. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
Approvals The FAA has approved the SA4550 under the following TSOs: C113: Airborne Multipurpose Electronic Displays Incomplete, Display Only TSOs: C3d: Turn and Slip Instruments C4c: Bank and Pitch Instruments C34e: ILS Glideslope Receiving Equipment C36e: Airborne ILS Localizer Receiving Equipment...
…" This manual uses terms that should be familiar to aviation-minded readers, such as "Attitude" and "Flight Director." Terms that are specific to the SA4550 will be placed in the glossary. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
Operational and legal issues Approvals Limitations Conventions Used in This Manual Table of Figures Effectivity, Revision History, and Errata CHAPTER 1 WELCOME TO THE SA4550 Introduction CHAPTER 2 OPERATION Power-On Self Test SA4550 Control and Display Layout DC Power LED...
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Fast/Slow Flag 2-30 Function Not Installed Flag 2-30 ERROR INDICATIONS 2-31 CRC Error 2-31 Fatal Error 2-31 Data Color Coding 2-32 CHAPTER 3 TECHNICAL SPECIFICATIONS CHAPTER 4 GLOSSARY CHAPTER 5 AVIONICS ACRONYMS/ABBREVIATIONS 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide viii...
Date: 07-NOV-2023 Revision: Applies to: SA4550 Software 1.10 & A1.10 Except for the superseding information in this section, the operation of the SA4550 is as described in the SA4550 Pilot's Guide referenced above. Revision History Revision Date Comments Release for 1.10 & A1.10 software.
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Page x: Effectivity updated for software 1.02; Document number 22-AUG-2007 reference added; Errata updated for incorrect page reference. No operational changes. 18-JUN-2007 New Format 07-MAY-2007 Initial Release No errata applicable to this release. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
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ADI that can be used in new installations or as an upgrade for electromechanical ADIs. It features a high resolution, high brightness, and long-life LED-backlit display. The SA4550 accepts pitch and roll input from the aircraft's Vertical Gyro to display attitude. The SA4550 incorporates standard ADI features such as flight...
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WELCOME TO THE SA4550 [This page intentionally left blank] 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
On initial power-up, a short introduction screen will be displayed during the power on self-test which includes the software version. It is normal for the self-test screen to flash off once during the sequence. Figure 2-1 Introduction Screen 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
OPERATION After display of the power-up self test, the SA4550 will immediately start normal operation. Since it is typically powered by the aircraft main bus, it is likely that the initial display will be flagged until after engine start and avionics are switched on.
Airplane Symbol MINS alert altitude Power-On Attitude Indicator Radalt Mini Test Test Button Button Port Knob NORM: Sets MINS alert altitude Slip Skid PULL: Adjusts Brightness Indicator Figure 2-3 SA4550 Single Cue FD 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
Flight Director Roll Command Flight Director Airplane Pitch Symbol Command Note: in this FD Mode illustration LOC, Button GS, and RADALT are not shown for clarity Figure 2-4 SA4550 Dual Cue FD Differences 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
Indicates the presence of interaction required. DC power. FD Mode Select: Depress button to Toggles between the alternate Flight Director Single Cue and Dual Cue presentation. Flight Director Mode. (If enabled during installation) 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
[ATT TEST] button is held for 5 seconds. If the display does not test properly or if any of the colors are visibly incorrect do not fly aircraft using the SA4550. Maintenance is required. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
"RA TEST" in amber while the system is under test. CONTROL FEATURE MINI USB PORT FUNCTION OPERATION Mini-USB Port: Maintenance function Used for updating only. internal software. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
"Function not have a radar altimeter Not Installed" will system configured for appear. display on the SA4550. Display Brightness: Pull the knob out and (OUT) Used for rotate to manually adjust manually adjusting the display brightness.
The flight director mode annunciations displayed are dependent on equipment installation – see AFM. Figure 2-6 SA4550 Primary Attitude Display Unit on right is configured without a radar altimeter. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
0° to 60° left or right of level. Scale is marked at 10°, 20°, 30°, 45°, and 60° increments. Sky Pointer: Moves in accordance with the aircraft roll attitude. Always points 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-11...
2.5° with short lines 2.5° and 5° increments and longer lines at 10° increments. There are numerical markings at 10° increments. Pitch attitudes below zero are preceded by a minus sign. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-12...
Cue): into the command bars. Supplies combined pitch/roll guidance from the flight computer. Own Aircraft Symbol (Single Cue): Represents the aircraft pitch and roll attitude relative to the pitch scale and sky/ground. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-13...
Hold is selected on the Represents the aircraft flight computer without a pitch and roll attitude lateral mode, vertical relative to the pitch scale guidance is presented and sky/ground. without lateral guidance. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-14...
"S" on the scale. An appropriate speed increase should be made. The indications on the Fast/Slow indicator are secondary and should be crosschecked with airspeed. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-15...
Indicates the deviation of indicating the direction the ILS glideslope. the aircraft should fly to return to on-course. When VHF NAV is not tuned to ILS, this indicator will not appear. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-16...
When VHF NAV is not tuned to ILS, this indicator will not appear. NOTE: This is a standard localizer and is not an expanded-scale localizer. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-17...
DISPLAY FEATURES SLIP/SKID INDICATOR FUNCTION OPERATION Slip/Skid Indicator: Center the ball to Shows turn coordination produce coordinated from lateral body flight. acceleration. This ball is centered if the aircraft is parked level. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-18...
FEET. Blanks if above the maximum Radar Altitude of 2000’ or 2500’ depending on the make/model of Radar Altimeter. Shows all dashes if the RA is invalid. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-19...
METERS. Blanks if above the maximum Radar Altitude of 610m or 762m depending on the make/model of Radar Altimeter. Shows all dashes if the RA is invalid. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-20...
Blanks if the minimum reached the minimum radar altitude is set to 0’. radar altitude set in the Shows all dashes if the MIN window. MIN is invalid. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-21...
Blanks if the minimum reached the minimum radar altitude is set to radar altitude set in the MIN window. Shows all dashes if the MIN is invalid. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-22...
Automatic decluttering nose low pitch attitude of the display will occur exists. prior to this unusual attitude indication. Appropriate unusual attitude recovery techniques should be used when this display appears. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-23...
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Automatic decluttering nose high pitch attitude of the display will occur exists. prior to this unusual attitude indication. Appropriate unusual attitude recovery techniques should be used when this display appears. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-24...
OPERATION ANNUNCIATOR DESCRIPTION The SA4550 annunciators appear in fixed locations. Certain locations are shared by difference annunciators which normally will not be on at the same time – for instance VRT and ALT are mutually exclusive. When a properly equipped aircraft has a GPS WAAS...
Aircraft altitude has reached the desired minimum descent altitude set externally (with an altitude alerter). APFD Altitude Hold Mode Altitude Hold mode is engaged. APFD Vertical NAV Mode Vertical NAV mode is engaged. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-26...
APFD Approach Mode Appears when VOR or LOC approach capture occurs. APFD Heading Mode Heading mode is engaged. APFD NAV Mode VOR/GPS/RNAV track mode is engaged. APFD Localizer Mode Localizer capture has occurred. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-27...
Details) APFD Glideslope Glideslope capture has occurred. APFD Back Course Appears when Back Course Localizer capture occurs. APFD Speed Mode Airspeed Hold mode is engaged. APFD RNAV Mode RNAV mode is engaged. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-28...
Any time the flight director system is flagged, the command bars will be removed from the display. Reference to primary data should be made. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-29...
Fast/Slow Flag Appears when angle of attack computer is invalid. Function Not Installed Flag Appears when an attempt is made to perform a function that is not installed or enabled. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-30...
SA4550 for attitude reference. The internal program code CRC self-check has failed. Maintenance is required. atal Error Indicates an internal non- recoverable error. The SA4550 is not usable for flight. Maintenance is required. 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-31...
Glideslope and Localizer deviation • scale lines Text on Flags: ATTITUDE, GS, • LOC, SPEED, COMPUTER Text on the following annunciators: • SPD, ALT, VN, VRT, APR, LOC, NAV, HDG, GS, BC 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-32...
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FAIL Annunciator Flight Director Command Bars • (Single Cue and Dual Cue) • MAGENTA Fast/Slow Indicator • Glideslope Deviation Indicator • Localizer Deviation Indicator • GRAY Aircraft Symbol – Single Cue • 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-33...
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OPERATION Color Data Displayed BLACK Aircraft Symbol – Dual Cue • 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide 2-34...
GLOSSARY CHAPTER 4 GLOSSARY The SA4550 incorporates an automatic decluttering feature during unusual attitudes when in Flight Mode. The SA4550 utilizes the following parameters in determining when to activate decluttering: Decluttering 1. +30 Degrees Pitch Attitude (Up) 2. -20 Degrees Pitch Attitude (Down)
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GLOSSARY [This page intentionally left blank] 82010-PG, REV. G NIGHTHAWK SA4550 PILOT’S GUIDE...
Auto Pilot / Flight Director Approach Attitude Back Course Built-In-Test Cyclic Redundancy Check Federal Aviation Administration Federal Aviation Regulations Flight Director Go Around Glide Slope Heading Instrument Landing System Light Emitting Diode Localizer Minimum Descent Altitude 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
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AVIONICS ACRONYMS / ABBREVIATIONS MINS Radar Altitude Minimums Navigation Receiver (VOR) NVIS Night Vision Radar Altitude RAD ALT Radar Altimeter RNAV Area Navigation Speed Technical Standard Order Universal Serial Bus Very High Frequency Vertical Navigation Vertical 82010-PG, REV. G NIGHTHAWK SA4550 Pilot’s Guide...
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