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ENSTROM F-28F Series Maintenance Manual

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ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL
Revision 7, dated Aug 28/17, applies to the Enstrom F-28F/280F Series Maintenance Manual,
Supplement 1 Avionics Systems.
Remove and insert the pages listed below. Avoid unintentional removal of pages by following this
list carefully. Special instructions are denoted with asterisks where applicable.
Remove Pages
i through ii
v through vi*
vii through INTRO-2
7-11 through 7-12
8-1 through 8-20
None
None
*
The existing Record of Revisions page may be retained; Removal/Insertion of this page is
unnecessary.
................................................................... End of List ...................................................................
SUPPLEMENT 1 AVIONIC SYSTEMS
Insert Pages
i through ii
v through vi*
vii through INTRO-4
7-11 through 7-12
8-1 through 8-18
10-1 through 10-12
11-1 through 11-10
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  • Page 1 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 AVIONIC SYSTEMS Revision 7, dated Aug 28/17, applies to the Enstrom F-28F/280F Series Maintenance Manual, Supplement 1 Avionics Systems. Remove and insert the pages listed below. Avoid unintentional removal of pages by following this list carefully.
  • Page 2 INTENTIONALLY LEFT BLANK...

  • Page 3: Airworthiness Limitations

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 AVIONIC SYSTEMS The Airworthiness Limitations Section is FAA approved and specifies inspections and other maintenance required under 14 CFR §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved.
  • Page 4 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 INTENTIONALLY LEFT BLANK Rev. 3 Nov 11/11...
  • Page 5 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 RECORD OF REVISIONS ISSUE DATE REV NO. ISSUE DATE DATE INSERTED DATE INSERTED Nov 21/08 Nov 21/08 Dec 8/08 Dec 8/08 Nov 11/11 Nov 11/11 Jan 9/14 Jan 9/14 Apr 15/15 Apr 15/15...
  • Page 6 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 INTENTIONALLY LEFT BLANK Rev. 4 Jan 9/14...
  • Page 7 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 TABLE OF CONTENTS Chapter Description Page Cover Page ..................i Recommended Change Report ............iii Record of Revisions ................v Table of Contents ................vii Effective Page List ................ix Introduction Avionic System(s) Effectivity ..........INTRO-1 Aircraft Effectivity ..............

  • Page 8: Table Of Contents

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 TABLE OF CONTENTS Chapter Description Page Chapter 4 Garmin GDL 69/69A XM Satellite Weather/Radio System Description ................. 4-1 Airworthiness Limitations ..............4-2 Servicing ..................4-3 Troubleshooting ................4-3 Periodic Inspections..............4-3 System Maintenance ............... 4-4 Electrical Diagram ................
  • Page 9 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 TABLE OF CONTENTS Chapter Description Page Chapter 10 GNC 255A Nav/Com System Description ............... 10-1 Airworthiness Limitations ............... 10-2 Servicing, Troubleshooting, and Periodic Inspections ....10-3 System Maintenance ..............10-4 Figures and Electrical Diagrams ........... 10-5...
  • Page 10 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 INTENTIONALLY LEFT BLANK Rev. 7 Aug 28/17...

  • Page 11: Nov 11/11 Nov

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 EFFECTIVE PAGE LIST Page Date Page Date Aug 28/17 Dec 8/08 Nov 11/11 Dec 8/08 Jan 9/14 Dec 8/08 Jan 9/14 Nov 11/11 Aug 28/17 Nov 11/11 Jan 9/14 Nov 11/11 Aug 28/17...
  • Page 12 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 EFFECTIVE PAGE LIST Page Date Page Date Aug 28/17 Aug 28/17 Aug 28/17 8-10 Aug 28/17 8-11 Aug 28/17 8-12 Aug 28/17 8-13 Aug 28/17 8-14 Aug 28/17 8-15 Aug 28/17 8-16 Aug 28/17...

  • Page 13: Avionic System(S) Effectivity

    Aircraft Effectivity A. The data presented in this F-28F/280F Series Maintenance Manual Supplement is applicable to all Enstrom F-28F and 280F series model helicopters. Supplemental Changes and Revisions A. Subsequent to the publication of the initial issue of this supplement, changes in the avionics equipment, support concepts and procedures, as well as information developed by experience may affect the contents of this supplement.

  • Page 14: Service Document Publications

    Directive Bulletins are also located under the Tech Publications section of the website. Enstrom distributes maintenance manual reissues and revisions in hardcopy form via mail to owners and operators who are registered with Enstrom. Notice of recently released Service Information Letters and Service Directive Bulletins is provided via a postcard mailing.

  • Page 15: Application Of Warnings, Cautions, And Notes

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Application of Warnings, Cautions, and Notes A. Throughout this supplement, it is necessary to highlight or emphasize important points to avoid injury to personnel, damage to equipment, or unnecessary confusion while performing maintenance procedures. The terms “WARNING,” “CAUTION,” and “NOTE” are used to draw attention to instructions or information deserving special consideration.
  • Page 16 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 INTENTIONALLY LEFT BLANK Rev. 7 INTRO-4 Aug 28/17...
  • Page 17 4-1-8. Software Update Verify the software version number matches the approved software version listed in Enstrom Rotorcraft Flight Manual Supplement 28-AC-070. The software version will appear on the start up screen after power up. If the replaced unit does not have the approved version of software installed, software can be downloaded from the Garmin Dealer Resource Center at www.flyGarmin.com.
  • Page 18 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 VIEW A Item Part Number Component Quantity 28-22028-1 GTX 330 ES Mode S Installation 010-00230-61 . GTX 330 ES Mode S Transponder MS26574-5 . Circuit Breaker 28-19064-1 . Placard 28-22183-127 Antenna Installation AV-22 .

  • Page 19: System Description

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 CHAPTER 8 GTN 650 GPS/NAV/COM SECTION 1 SYSTEM DESCRIPTION 1-1. System Description The GTN 650 installation part number is 28-22112-3. The components of the GTN 650 installation include the GTN 650 unit installed in the lower console and Nav, Com, and GPS antennas.

  • Page 20: Airworthiness Limitations

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 SECTION 2 AIRWORTHINESS LIMITATIONS 2-1. Airworthiness Limitations The Airworthiness Limitations Section is FAA approved and specifies inspections and other maintenance required under 14 CFR §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved.

  • Page 21: Servicing, Troubleshooting, And Periodic Inspections

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 SECTION 3 SERVICING, TROUBLESHOOTING, AND PERIODIC INSPECTIONS 3-1. Servicing The GTN 650 installation contains no user serviceable components or assemblies. Operations involving the removal of the GTN 650 must be done by authorized maintenance technicians.

  • Page 22: System Maintenance

    Basic Weight and Balance Record, as required. 4-1. GTN 650 NOTE All work must be accomplished in accordance with the Enstrom F-28F/280F Series Maintenance Manual. 4-1-1. Cleaning The GTN displays use a lens coated with a special anti-reflective coating that is very sensitive to skin oils, waxes, and abrasive cleaners.

  • Page 23: Figures And Electrical Diagrams

    4-1-5. Software Update Verify the software version number matches the approved software version listed in Enstrom Rotorcraft Flight Manual Supplement 28-AC-069. The software version will appear on the start up screen after power up. If the replaced unit does not have the approved version of software installed, software can be downloaded from the Garmin Dealer Resource Center at www.flyGarmin.com.
  • Page 24 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Figure 8-1. GTN 650 Installation Rev. 7 Aug 28/17...
  • Page 25 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Figure 8-1. GTN 650 Installation Item Part Number Description Quantity 28-22112-1 GTN 650 Installation (S/S by 28-22112-3) 28-22112-3 GTN 650 Installation 010-00813-A0 GTN 650 Kit 011-02256-00 . GTN 650 010-01157-41 . Helo, Americas North 010-01157-42 .
  • Page 26 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 INTENTIONALLY LEFT BLANK Rev. 7 Aug 28/17...
  • Page 27 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 ARINC 429 Configuration Page  Main Indicator (Analog) Configuration page  Traffic Configuration Page  N/A (Not applicable at this time)  Speed  Data  Calibrate OBS Resolver  Calibrate (Note 1)  ARINC 429 In 1  ‐‐‐  OFF  CDI Key  Enabled  Main System Configuration Page  ARINC 429 In 2  ‐‐‐  OFF  Selected Course For GPS  Allowed  Airframe Type  Rotorcraft  ARINC 429 Out 1  ‐‐‐  OFF  Selected Course For VOR/LOC  Allowed  Air/Ground Threshold  10KT  ARINC 429 Out 2  ‐‐‐  OFF  V‐Flag State  Normal ...
  • Page 29 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Discrete Configuration Page  System ‐ Alerts (Note 1)  Arrival  Active  N/A (No action taken)  Proximity  3.0 NM  Airspace Alerts  All Active  Waypoint Configuration Page  Altitude Buffer  200 FT  Mark on Target  Disabled  Notes:  1) These settings can be modified per customer requirements unless  noted otherwise   Terrain Configuration Page  Not applicable at this time  System ‐ Units (Note 1)  Nav Angle  Magnetic (°)  Temperature  Celsius (°)  Com Transmit Power Configuration Page  Fuel  Gallons (GAL)  Com Transmit Power  Position Format  LAT/LON  Normal  16W  Notes: ...
  • Page 31 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Group 1 Configuration Page  Notes  left  right window  EXAMPLE:  window  K‐FACTOR* OF 41.6  XXXX  4  160  L =  LEFT K‐FACTOR  Enter K‐FACTOR  (*The K‐FACTOR value entered should match the K‐ FACTOR identified on the fuel flow transducer.)  R =  0  RIGHT K‐FACTOR  N/A  A =  0  LEFT FUEL FLOW OFFSET  N/A  b =  0  RIGHT FUEL FLOW OFFSET  N/A  U =  0  FUEL UNITS  0 = GALLONS  E =  0 ...
  • Page 33 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 8-1. GTN 650 (Ref. 28-19079-9 Rev. F) Rev. 7, Aug 28/17 8-15/8-16 Blank...
  • Page 35 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 8-2. GTN 650 – Fuel Management System Interface (Ref. 28-19078-1 Rev. A) Rev. 7, Aug 28/17 8-17/8-18 Blank...

  • Page 37: System Description

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 CHAPTER 10 GNC 255A SECTION 1 SYSTEM DESCRIPTION 1-1. System Description The GNC 255A is a VHF communications transceiver combined with 200-channel VOR, LOC, and GS navigation receivers. The com radio operates from 118.000 to 139.975 MHz in either 25 kHz or 8.33 kHz channel spacing.

  • Page 38: Airworthiness Limitations

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 SECTION 2 AIRWORTHINESS LIMITATIONS 2-1. Airworthiness Limitations The Airworthiness Limitations Section is FAA approved and specifies inspections and other maintenance required under 14 CFR §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved.

  • Page 39: Servicing, Troubleshooting, And Periodic Inspections

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 SECTION 3 SERVICING, TROUBLESHOOTING, AND PERIODIC INSPECTIONS 3-1. Servicing The GNC 255A installation contains no user serviceable components or assemblies. Operations involving the removal of the GNC 255A must be done by authorized maintenance technicians.

  • Page 40: System Maintenance

    Basic Weight and Balance Record, as required. 4-1. GNC 255A NOTE All work must be accomplished in accordance with the Enstrom F-28F/280F Series Maintenance Manual. 4-1-1. Cleaning The front bezel, keypad, and display can be cleaned with a microfiber cloth or with a soft cotton cloth dampened with clean water.

  • Page 41: Figures And Electrical Diagrams

    4-1-5. Software Update Verify the software version number matches the approved software version listed in Enstrom Rotorcraft Flight Manual Supplement 28-AC-074. The software version will appear on the start up screen after power up. If the replaced unit does not have the approved version of software installed, software can be downloaded from the Garmin Dealer Resource Center at www.flyGarmin.com.
  • Page 42 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Figure 10-1. GNC 255A Installation Rev. 7 10-6 Aug 28/17...
  • Page 43 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Figure 10-1. GNC 255A Installation Item Part Number Description Quantity 28-22063-5 GNC 255A Installation 010-01025-50 . GNC 255A Kit 011-02806-00 . . GNC 255A 006-D3844-00 . . Frequency Data Worldwide MS26574-2 . Circuit Breaker (2 amp) MS26574-5 .
  • Page 44 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 INTENTIONALLY LEFT BLANK Rev. 7 10-8 Aug 28/17...
  • Page 45 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Figure 10-2. GNC 255 Configuration Set-Up (Ref. 28-19069-103 Rev. C) Rev. 7, Aug 28/17 10-9/10-10 Blank...
  • Page 47 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 10-1. GNC 255A (Ref. 28-19069-103 Rev. C) Rev. 7, Aug 28/17 10-11/10-12 Blank...

  • Page 49: System Description

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 CHAPTER 11 MD200 SERIES CDI SECTION 1 SYSTEM DESCRIPTION 1-1. System Description The Mid-Continent MD200-706 Course Deviation Indicator is designed to operate with VHF and GPS navigational equipment to provide OMNI (VOR), GPS, localizer (VLOC), and glideslope (GS) information.

  • Page 50: Servicing, Troubleshooting, And Periodic Inspections

    ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 SECTION 3 SERVICING, TROUBLESHOOTING, AND PERIODIC INSPECTIONS 3-1. Servicing The MD200 Series CDI installation contains no user serviceable components or assemblies. Operations involving the removal of the MD200 Series CDI must be done by authorized maintenance technicians.

  • Page 51: System Maintenance

    Basic Weight and Balance Record, as required. 4-1. MD200 Series CDI NOTE All work must be accomplished in accordance with the Enstrom F-28F/280F Series Maintenance Manual. 4-1-1. Removal Remove the MD200 Series CDI in accordance with paragraph 7-18, A, steps 1 through 4 of the F-28F/280F Series Maintenance Manual.
  • Page 52 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Item Part Number Description Quantity MD200-306 . Indicator MD200-706 . Indicator AN515B6R14 . . Screw MS35214-30 . . Screw (alternate) Figure 11-1. MD200 Series Installation Rev. 7 11-4 Aug 28/17...
  • Page 53 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 11-1. GTN 650 – MD200-306 Interface (Ref. 28-19067-107 Rev. D) Rev. 7, Aug 28/17 11-5/11-6 Blank...
  • Page 55 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 11-2. GNC 255A – MD200-706 Interface (Ref. 28-19067-109 Rev. E) Rev. 7, Aug 28/17 11-7/11-8 Blank...
  • Page 57 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 11-3. GTN 650 – MD200-706 Interface (Ref. 28-19067-109 Rev. E) Rev. 7, Aug 28/17 11-9/11-10 Blank...

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