# N705GG: 1981 Dehavilland DHC-7-102

- Status: Valid registration
- Airframe: [Dehavilland DHC-7-102](https://openairdocs.org/model/dehavilland-dhc-7-102) (registry code 2802708, 59 seats)
- Engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52032)
- Data sheets: [TCDS A20EA](https://openairdocs.org/tcds/A20EA) (De Havilland Aircraft of Canada Limited) (OpenAirDocs)
- Serial number: 48
- Year built: 1981
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, transport
- Airworthiness date: February 7, 1998
- Certificate issued: July 6, 2020
- Expires: July 31, 2027
- Mode S code: A967BE
- Registered owners: [United States Government](https://openairdocs.org/faa-owner/UNITED%20STATES%20GOVERNMENT), [Dept Of The Army](https://openairdocs.org/faa-owner/DEPT%20OF%20THE%20ARMY)
- Location: [Fort Belvoir, VA](https://openairdocs.org/faa-place/VA/Fort%20Belvoir)
- Owner type: Government
- Owner's area on the map: 38.6994° N, 77.1575° W: Placed by OpenAirDocs at the center of ZIP code 22060, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=705GG
- Page: https://openairdocs.org/aircraft/N705GG

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney PT6A model are included.

## ADs that may apply (OpenAirDocs): 99 in force

### Matched by airframe (Dehavilland DHC-7-102)

- [AD 2026-13-02](https://openairdocs.org/ad/2026-13-02): Navigation · Airbus Canada Limited Partnership 18, 49-46, 80-A and 555 more. Effective Jul 1, 2026
- [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023
- [AD 2010-23-21](https://openairdocs.org/ad/2010-23-21): Fuel · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Dec 22, 2010
- [AD 2009-06-03](https://openairdocs.org/ad/2009-06-03): Lamp holder · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Apr 20, 2009
- [AD 2007-20-02](https://openairdocs.org/ad/2007-20-02): SM-200 servo drive units · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Oct 31, 2007
- [AD 2006-11-02](https://openairdocs.org/ad/2006-11-02): Corrosion prevention and control program (CPCP) · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jun 27, 2006
- [AD 2006-12-04](https://openairdocs.org/ad/2006-12-04): Airworthiness Limitations · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jun 21, 2006
- [AD 2005-16-03](https://openairdocs.org/ad/2005-16-03): Lower wing skins · Viking Air DHC-7-100, DHC-7-101, DHC-7-102 and 1 more. Effective Sep 6, 2005
- [AD 2000-02-07 R1](https://openairdocs.org/ad/2000-02-07-R1): Locking Pin Fittings of Baggage Door and Locking Pin Housings of Fuselage · Viking Air DHC-7-100, DHC-7-101, DHC-7-102 and 1 more. Effective Jun 15, 2004
- [AD 2002-06-06](https://openairdocs.org/ad/2002-06-06): Rockwell Collins TDR-94 and TDR-94D Mode S transponders · Bombardier ATR42-200, ATR42-300, ATR42-320 and 20 more. Effective May 3, 2002
- [AD 2001-12-11](https://openairdocs.org/ad/2001-12-11): Ground Spoiler Actuators · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jul 24, 2001
- [AD 2001-08-05](https://openairdocs.org/ad/2001-08-05): Main Landing Gear Hydraulic Oil Leaks · Viking Air DHC-7-100, DHC-7-101, DHC-7-102 and 1 more. Effective May 29, 2001
- [AD 2000-16-03](https://openairdocs.org/ad/2000-16-03): Weight and Balance Check · Bombardier DHC-8-101, DHC-8-102, DHC-8-103 and 10 more. Effective Sep 21, 2000
- [AD 99-26-11](https://openairdocs.org/ad/99-26-11): Lower Longerons on Inboard Nacelles · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jan 24, 2000
- [AD 99-19-18](https://openairdocs.org/ad/99-19-18): AFM - Limitations Section - Ice Protection Sys. · Bombardier DHC-8-101, DHC-8-102, DHC-8-103 and 14 more. Effective Dec 27, 1999
- [AD 99-03-07](https://openairdocs.org/ad/99-03-07): Attachment Bolts of Wing-to-Fuselage Fittings · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Mar 11, 1999
- [AD 98-25-09](https://openairdocs.org/ad/98-25-09): MLG Brake Shuttle Valves · Bombardier DHC-8-101, DHC-8-102, DHC-8-103 and 11 more. Effective Jan 14, 1999
- [AD 98-23-12](https://openairdocs.org/ad/98-23-12): Maintenance Manual PSM 1-7-2 · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Dec 17, 1998
- [AD 97-20-03](https://openairdocs.org/ad/97-20-03): AFM - Limitations Section - Power Levers · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Oct 27, 1997
- [AD 97-04-15](https://openairdocs.org/ad/97-04-15): Fire Extinguisher Bottle Cartridges · Bombardier DHC-8-101, DHC-8-102, DHC-8-103 and 24 more. Effective Mar 7, 1997
- [AD 96-25-16](https://openairdocs.org/ad/96-25-16): Power Control Relay of Emergency Lights · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Feb 3, 1997
- [AD 96-25-08](https://openairdocs.org/ad/96-25-08): Inspect for Black Film Insulation of Air Conditioning System · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Feb 3, 1997
- [AD 96-25-12](https://openairdocs.org/ad/96-25-12): Auxiliary Power Units · BAE Systems HS 748 Series 2A, HS 748 Series 2B, 707-100 Long Body and 74 more. Effective Jan 13, 1997
- [AD 95-26-15 R1](https://openairdocs.org/ad/95-26-15-R1): Traffic Alert and Collision Avoidance Systems · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 159 more. Effective Dec 26, 1996
- [AD 96-18-19](https://openairdocs.org/ad/96-18-19): Skin Panels of Fuselage · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Oct 15, 1996
- [AD 96-11-06](https://openairdocs.org/ad/96-11-06): Emergency Lights Circuitry · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jun 28, 1996
- [AD 96-09-25](https://openairdocs.org/ad/96-09-25): AFM - Icing · Bombardier DHC-8-101, DHC-8-102, DHC-8-103 and 11 more. Effective Jun 11, 1996
- [AD 94-17-08](https://openairdocs.org/ad/94-17-08): Modify Firewall Terminal Block Assembly · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Sep 21, 1994
- [AD 94-14-19](https://openairdocs.org/ad/94-14-19): Hydraulic Selector Valve · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jul 26, 1994
- [AD 94-09-05](https://openairdocs.org/ad/94-09-05): Adapter Plates · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jun 6, 1994
- [AD 94-01-06](https://openairdocs.org/ad/94-01-06): Traffic Alert and Collision Avoidance System II Processors · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 176 more. Effective Feb 4, 1994
- [AD 94-01-05](https://openairdocs.org/ad/94-01-05): Traffic Alert and Collision Avoidance System II Processors · Airbus A340-211, A340-212, A340-213 and 85 more. Effective Feb 4, 1994
- [AD 94-01-04](https://openairdocs.org/ad/94-01-04): Traffic Alert and Collision Avoidance System · Airbus A300 B4-601, A300 B4-603, A300 B4-605R and 136 more. Effective Feb 4, 1994
- [AD 93-15-07](https://openairdocs.org/ad/93-15-07): Main Landing Gear Upper Lockstrut Sub-Assembly · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Aug 9, 1993
- [AD 93-11-09](https://openairdocs.org/ad/93-11-09): Nose Landing Gear Drag Strut Attachment Fitting · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jul 22, 1993
- [AD 93-11-08](https://openairdocs.org/ad/93-11-08): Actuator Attachment Brackets Inspection · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jul 22, 1993
- [AD 93-11-06](https://openairdocs.org/ad/93-11-06): Wing Inboard Leading Edge · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jul 22, 1993
- [AD 93-06-07](https://openairdocs.org/ad/93-06-07): Quantity Limiting Valves · Bombardier DHC-8-102, DHC-8-103, DHC-8-301 and 6 more. Effective May 12, 1993
- [AD 93-04-02](https://openairdocs.org/ad/93-04-02): Transponders · BAE Systems ATP, CL-600-2A12 (CL-601), DHC-8-101 and 23 more. Effective Mar 26, 1993
- [AD 93-01-01](https://openairdocs.org/ad/93-01-01): Ohm Readings Inspection · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Feb 25, 1993
- [AD 92-27-15](https://openairdocs.org/ad/92-27-15): Elevator Servo Drum Assembly · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Feb 8, 1993
- [AD 92-27-03](https://openairdocs.org/ad/92-27-03): Engine Nacelles · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jan 22, 1993
- [AD 92-20-01](https://openairdocs.org/ad/92-20-01): Main Landing Gear Emergency Down Release Cables · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Nov 17, 1992
- [AD 92-14-10](https://openairdocs.org/ad/92-14-10): Ground Spoiler Control System · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Aug 20, 1992
- [AD 92-12-04](https://openairdocs.org/ad/92-12-04): Flap Track Dye Penetrant Inspection · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Jul 24, 1992
- [AD 91-10-01](https://openairdocs.org/ad/91-10-01): Traffic Alert and Collision Avoidance Systems · ATR - GIE Avions de Transport Régional ATR42-200, ATR42-300, 727-100 Series and 28 more. Effective Mar 10, 1992
- [AD 91-18-21](https://openairdocs.org/ad/91-18-21): Flap Track Support Fittings · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Oct 15, 1991
- [AD 91-18-20](https://openairdocs.org/ad/91-18-20): Main Landing Gear · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Oct 15, 1991
- [AD 91-09-08](https://openairdocs.org/ad/91-09-08): Rear Spar Frame And Nacelle Joint · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective May 28, 1991
- [AD 91-05-13](https://openairdocs.org/ad/91-05-13): Wing Flight Spoilers · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more. Effective Mar 29, 1991

### Matched by engine (Pratt & Whitney PT6A series)

- [AD 2024-04-51](https://openairdocs.org/ad/2024-04-51): Turbine Section · Pratt & Whitney Canada PT6A-64, PT6A-66, PT6A-66A and 17 more. Effective Mar 28, 2024
- [AD 2022-08-13](https://openairdocs.org/ad/2022-08-13): Turbine Section · Pratt & Whitney Canada PT6A-34, PT6A-34B, PT6A-34AG and 2 more. Effective May 27, 2022
- [AD 2016-05-13](https://openairdocs.org/ad/2016-05-13): Corrosion and perforation of the two-ply Cu-Be bellows in Woodward FCUs. · Pratt & Whitney Canada PT6A-60AG, PT6A-65AG, PT6A-67AF and 1 more. Effective Apr 22, 2016
- [AD 2014-17-08 R1](https://openairdocs.org/ad/2014-17-08-R1): Compressor turbine (CT) blades · Pratt & Whitney Canada PT6A-114 and PT6A-114A. Effective Jun 5, 2015
- [AD 2014-11-05](https://openairdocs.org/ad/2014-11-05): Reinforcement liner to the power turbine (PT) containment   
  ring and, for certain PT containment rings, adding scallops · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 18 more. Effective Aug 5, 2014
- [AD 2012-09-10](https://openairdocs.org/ad/2012-09-10): First stage sun gears · Pratt & Whitney Canada PT6A-110, PT6A-112, PT6A-114 and 12 more. Effective May 23, 2012
- [AD 2011-25-12](https://openairdocs.org/ad/2011-25-12): Sun gear · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 4 more. Effective Dec 28, 2011
- [AD 2011-20-51](https://openairdocs.org/ad/2011-20-51): Gears · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 4 more. Effective Nov 1, 2011
- [AD 2004-25-18](https://openairdocs.org/ad/2004-25-18): Propeller governor assemblies · Pratt & Whitney Canada PT6A-60A and PT6A-65B. Effective Jan 18, 2005
- [AD 2002-23-13](https://openairdocs.org/ad/2002-23-13): Turbine Exhaust Ducts · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 20 more. Effective Dec 31, 2002
- [AD 2001-20-01](https://openairdocs.org/ad/2001-20-01): Compressor Bleed Valve Assembly · Pratt & Whitney Canada PT6A-114A and PT6A-25C. Effective Nov 5, 2001
- [AD 97-04-12](https://openairdocs.org/ad/97-04-12): Compressor Bleed-off Valve · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 52 more. Effective Mar 14, 1997
- [AD 95-13-08](https://openairdocs.org/ad/95-13-08): Compressor Turbine Disk · Pratt & Whitney Canada PT6A-67D. Effective Jul 12, 1995
- [AD 93-23-06](https://openairdocs.org/ad/93-23-06): Airframe Chip Detector Flag System · Pratt & Whitney Canada PT6A-50. Effective Jan 26, 1994
- [AD 92-15-11](https://openairdocs.org/ad/92-15-11): Compressor Delivery Air Line (P3) Filter Assembly · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-21 and 7 more. Effective Aug 17, 1992
- [AD 90-12-05](https://openairdocs.org/ad/90-12-05): Engine Overhaul · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 3 more. Effective May 30, 1990
- [AD 86-10-05](https://openairdocs.org/ad/86-10-05): First Stage Compressor Hub · Pratt & Whitney Canada PT6A-42. Effective Jun 5, 1986
- [AD 80-08-12](https://openairdocs.org/ad/80-08-12): Fuel Pump Drive Coupling Splines · Pratt & Whitney Canada PT6A-11, PT6A-112, PT6A-135 and 24 more. Effective Apr 18, 1980
- [AD 80-04-02](https://openairdocs.org/ad/80-04-02): Push-Pull Control Terminal · Pratt & Whitney Canada PT6A-20, PT6A-6A, PT6A-6B and 1 more. Effective Feb 8, 1980
- [AD 78-17-07](https://openairdocs.org/ad/78-17-07): Fuel Control Unit · Pratt & Whitney Canada PT6A-38, PT6A-41 and PT6A-45A. Effective Aug 31, 1978
- [AD 78-12-04](https://openairdocs.org/ad/78-12-04): No. 2 Bearing Pressure Oil Transfer Tube Assembly · Pratt & Whitney Canada PT6A-38, PT6A-41 and PT6A-45A. Effective Jun 19, 1978
- [AD 75-06-01](https://openairdocs.org/ad/75-06-01): Gearbox Deterioration · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 11 more. Effective Apr 1, 1977
- [AD 75-11-04](https://openairdocs.org/ad/75-11-04): Reduction Gearbox Engine Distress · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 8 more. Effective May 20, 1975
- [AD 70-16-01](https://openairdocs.org/ad/70-16-01): Turbo Propeller Governors · Pratt & Whitney Canada PT6A-11, PT6A-11AG, PT6A-15AG and 5 more. Effective Aug 4, 1970
- [AD 69-23-06](https://openairdocs.org/ad/69-23-06): Fuel Pumps · Pratt & Whitney Canada PT6A-20, PT6A-27, PT6A-28 and 4 more. Effective Nov 15, 1969
- [AD 68-05-03](https://openairdocs.org/ad/68-05-03): Reverse Mode · Pratt & Whitney Canada PT6A-20 and PT6A-6B. Effective Feb 28, 1968

### Historical (superseded or no longer in force)

- [AD 2000-02-07](https://openairdocs.org/ad/2000-02-07) (historical): Locking Pin Fittings of the Baggage Door · Viking Air DHC-7-100, DHC-7-101, DHC-7-102 and 1 more. Effective Mar 2, 2000
- [AD 74-08-09 R2](https://openairdocs.org/ad/74-08-09-R2) (historical): Waste Receptacles · Aero Spacelines 377, 377MG, 377SGT and 268 more. Effective Jul 29, 1996
- [AD 2014-17-08](https://openairdocs.org/ad/2014-17-08) (historical): Compressor turbine (CT) blades · Pratt & Whitney Canada PT6A-114 and PT6A-114A. Effective Oct 8, 2014
- [AD 88-24-02](https://openairdocs.org/ad/88-24-02) (historical): Airframe Chip Detector Flag System · Pratt & Whitney Canada PT6A-50

All 103: https://openairdocs.org/aircraft/N705GG/ads.md

## Information bulletins (advisory) (5 in force)

- [SAIB NE-15-21](https://openairdocs.org/saib/NE-15-21): Fuel Injector Nozzle. Issued Aug 19, 2015
- [SAIB NE-12-04](https://openairdocs.org/saib/NE-12-04): Turbine/ Turboprop Engine: Reduction Gearbox. Issued Nov 1, 2011
- [SAIB NE-10-47](https://openairdocs.org/saib/NE-10-47): Turbine Engine Compressor Section. Issued Aug 30, 2010
- [SAIB NE-06-34](https://openairdocs.org/saib/NE-06-34): . Issued Mar 21, 2006
- [SAIB CE-03-24](https://openairdocs.org/saib/CE-03-24): . Issued Feb 19, 2003

## NTSB investigations

None matched to N705GG.

## FAA accident and incident reports

None matched to N705GG.

## Service difficulty reports (1)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR 2019FA0000110](https://openairdocs.org/sdr/2019FA0000110), Apr 9, 2019: BRACKET. CRACKED. PILOT'S RUDDER PEDAL CONTROL MECHANISM BRACKET ASSY CRACKED. IPC 27-20-00, FIG 10, ITEM 50, PN 72710086-001. REPORTED A BRACKET HAD BROKEN ON THEIR AIRCRAFT AND

## STCs that may be installed (OpenAirDocs) (156, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Dehavilland DHC-7-102)

- [STC ST01305WI-D](https://openairdocs.org/stc/ST01305WI-D): Modification of a Collins ALT-50A or ALT-55B Radio Altimeter system installation to a Collins ALT-1000 or ALT-4000 Radio Altimeter system installation in accordance with Collins Drawing Index as listed on AML No. ST01305WI-D, Revision -, or later FAA approved revision. Rockwell Collins Inc
- [STC ST04328NY](https://openairdocs.org/stc/ST04328NY): The Manufacture and Installation of Exterior Placards, Labels and Signs is to be performed, installed. Libellule Monde Inc
- [STC ST03875NY](https://openairdocs.org/stc/ST03875NY): Installation of interior placards, signs and markings. Libellule Monde Inc
- [STC SA2622NM](https://openairdocs.org/stc/SA2622NM): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101). Precise Flight Inc
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC SA3947NM](https://openairdocs.org/stc/SA3947NM): Installation of Floor Proximity Emergency Escape Path Marking System. Bruce Aerospace Inc
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII. Aircraft Systems and Manufacturing Inc
- [STC ST10398SC](https://openairdocs.org/stc/ST10398SC): Installation of a WX-1000 Stormscope. Sierra Nevada Company LLC
- [STC ST01893AT](https://openairdocs.org/stc/ST01893AT): Installation of SAF-T-GLO Aerospace's photoluminescent floor proximity emergency escape path marking system (FPEEPMS). STG Aerospace Inc
- [STC ST02558NY](https://openairdocs.org/stc/ST02558NY): Installation of Sky Connect Tracking System. Honeywell International Inc
- [STC ST02635LA](https://openairdocs.org/stc/ST02635LA): Modification to replace the existing Mode S Transponder system with the ACSS NXT-600 Mode S Transponder with ADS-B Out. Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC ST04340NY](https://openairdocs.org/stc/ST04340NY): Installation of TCAS 7.1 (ACAS II) upgrade of Prior Existing TCAS 7.0. Scandinavian Avionics Design ApS
- [STC ST02636LA](https://openairdocs.org/stc/ST02636LA): Modification to upgrade the existing XS-950 Mode S Transponder system to add ADS-B Out. Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC ST02595SE](https://openairdocs.org/stc/ST02595SE): Installation of a Supplement Lighting System manufactured and installed. Aviation Specialties Unlimited Inc
- [STC ST00423WI](https://openairdocs.org/stc/ST00423WI): Installation of Keddeg Company 21BC111 Coalescer Assembly. Purolator Facet, Inc
- [STC ST02632LA](https://openairdocs.org/stc/ST02632LA): Modification to replace the existing Mode S Transponder system with ACSS NXT-700 Mode S Transponder with ADS-B Out and optionally install ACSS NXG-900 GPS as a position source for ADS-B Out. Aviation Communications and Surveillance Systems
- [STC ST02609LA](https://openairdocs.org/stc/ST02609LA): Modification to replace the existing Mode S Transponder system with ACSS NXT-700 Mode S Transponder with ADS-B Out. Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC ST03776NY](https://openairdocs.org/stc/ST03776NY): Modification to upgrade existing Rockwell Collins TCAS (Model: TTR-920, TTR-921, and TTR-4000) at VERSION 7.0 to Rockwell Collins TCAS (Model: TTR-921, TTR-4000, and TTR-4100) at VERSION 7.1 (ACAS II). Scandinavian Avionics Design ApS
- [STC ST00881WI-D](https://openairdocs.org/stc/ST00881WI-D): Modification of a TCAS II system installation to Change 7.0 or Change 7.1. Rockwell Collins Inc
- [STC ST00090MC](https://openairdocs.org/stc/ST00090MC): Installation of a Raytheon APX-119 IFF Transponder System. King Aerospace Inc
- [STC SA3702SW](https://openairdocs.org/stc/SA3702SW): Installation of Floor Proximity Lighting System in accordance with Vista Manufacturing, Inc., Drawing List DH7-1000, Revision D, Dated December 02, 1986 or later FAA approved revision. BF Goodrich Aerospace
- [STC ST00180DE](https://openairdocs.org/stc/ST00180DE): Installation of Long Range Fuel System for the Viking Air Limited Model DHC-7-102 and 103 airplane in accordance with Branson Aircraft Corporation (BAC) Drawing 47100, Rev. F, dated March 10, 2011, or later FAA approved revision. Northrop Grumman Systems Corporation
- [STC ST01202WI-D](https://openairdocs.org/stc/ST01202WI-D): Modification of an existing FAA approved Collins TPR-720, TPR-900 or TPR-901 Mode S transponder installation in Part 25 Aircraft using Collins Drawing Index as listed on AML No. ST01202WI-D, latest FAA approved revision. Rockwell Collins Inc
- [STC ST00673WI-D](https://openairdocs.org/stc/ST00673WI-D): Modification of Collins VHF-22A/VHF-22B VHF COMM Receiver Transmitter with CTL-22 Control Pro Line II System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System installation. Rockwell Collins Inc
- [STC ST00682WI-D](https://openairdocs.org/stc/ST00682WI-D): Modification of Collins VHF-20/VHF-20A/VHF-20B VHF COMM Receiver Transmitter with CTL-20 Control Pro Line I System Installation to a Collins VHF-22C/VHF-22D VHF COMM Receiver Transmitter with CTL-22C Control 8.33 kHz Pro Line II System Installation in accordance with Collins Installation Instructions as listed on AML No. ST00682WI-D, Revision -, or later FAA approved revisions. Rockwell Collins Inc
- [STC ST02562NY](https://openairdocs.org/stc/ST02562NY): The installation of Battery Powered Refuel System to be done in accordance with Voyageur Airways Limited Design Change Summary DCS 07-003, Rev. N/C, dated April 10, 2008, or later Transport Canada approved revision. Voyageur Airways Limited
- [STC SA2752CE-D](https://openairdocs.org/stc/SA2752CE-D): Installation of Collins Traffic Alert and Collision Avoidance System TCAS-94 (TCAS II). Rockwell Collins Inc
- [STC ST01142WI-D](https://openairdocs.org/stc/ST01142WI-D): Modification of a single or dual Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92 control head to a Flight ID capable Collins TDR-94 or TDR-94D Mode S Transponder System installation with CTL-92E control head. Rockwell Collins Inc
- [STC ST00844WI-D](https://openairdocs.org/stc/ST00844WI-D): Modification of Collins TCAS II or TCAS-94 (TCAS II) system installation with Collins TTR-920 Change 7.0 Receiver Transmitter to a Collins TCAS II or TCAS-94 OTCAS II) system installation with Collins TTR-921 or Collins TTR-4000 Change 7.0 TCAS Receiver Transmitter. Rockwell Collins Inc
- [STC SA1048NE](https://openairdocs.org/stc/SA1048NE): Installation of Honeywell EDZ-805 E.F.I.S., UNS-1B, and avionics. (DHC-7-102 S/N 048, 095, DHC-7-103 S/N 104). Sierra Nevada Corporation/Integrated Mission Systems
- [STC SA1049NE](https://openairdocs.org/stc/SA1049NE): Installation of ESL special mission configuration. (DHC-7-103 S/N 104, DHC-7-102 S/N 048). Sierra Nevada Corporation/Integrated Mission Systems
- [STC SA1072NE](https://openairdocs.org/stc/SA1072NE): Modification in accordance with Delta Engineering Corporation Master Drawing List No. 93-8, Revision D, dated March 26, 1983 which removes the “Daylight Operations Only” limitation from Supplemental Type Certificates (STC’s) SA1048NE, SA1049NE, and SA1082NE. Sierra Nevada Corporation/Integrated Mission Systems
- [STC SA9020NM-D](https://openairdocs.org/stc/SA9020NM-D): Increase in Ramp Weight to 49,000 pounds. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00412NY](https://openairdocs.org/stc/ST00412NY): Installation of composite type equipment racks and workstations. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00413NY](https://openairdocs.org/stc/ST00413NY): Installation of Sensor Covers. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00414NY](https://openairdocs.org/stc/ST00414NY): Installation of Wing Tip Antenna. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00415NY](https://openairdocs.org/stc/ST00415NY): Installation of Koolatron Storage Box. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00416NY](https://openairdocs.org/stc/ST00416NY): Installation of Chemical Toilet. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00417NY](https://openairdocs.org/stc/ST00417NY): Installation of Host Avionics, Mission Avionics, Special Mission Interior, Tri-Port, Aircraft Surveillance equipment. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00453NY](https://openairdocs.org/stc/ST00453NY): Installation of PME-1 Cooling System. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST00460NY](https://openairdocs.org/stc/ST00460NY): Installation of two single place side facing seats. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01071AT](https://openairdocs.org/stc/ST01071AT): Installation of provisions for a Hughes HISAR Moving Target Radar System. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01216NY](https://openairdocs.org/stc/ST01216NY): Installation of UNS-1D Flight Management System. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01218NY](https://openairdocs.org/stc/ST01218NY): Installation of a Baker Electronics Audio System for the cockpit jump seat. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01235NY](https://openairdocs.org/stc/ST01235NY): Host Avionics Installation. Approved for DHC-7-102 serial number 34 ONLY. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01237NY](https://openairdocs.org/stc/ST01237NY): Removal of Altimeter 1/2 switching circuitry. Modification can only be performed with Configuration A of STC ST00417NY. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01238NY](https://openairdocs.org/stc/ST01238NY): Removal of WF-360 sensor and installation of Wescam Model 20 sensor. Configuration A of STC ST00417NY must be installed with this mod. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01241NY](https://openairdocs.org/stc/ST01241NY): Installation of UNS-1D Flight Management System. Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01242NY](https://openairdocs.org/stc/ST01242NY): Installation of a Tactical Common Data Link System (TCDL). Sierra Nevada Corporation/Integrated Mission Systems
- [STC ST01244NY](https://openairdocs.org/stc/ST01244NY): Relocation of cockpit equipment. STC SA1048NE must be previously installed. Sierra Nevada Corporation/Integrated Mission Systems

All 156: https://openairdocs.org/aircraft/N705GG/stcs.md

## Related

- Other Dehavilland DHC-7-102 aircraft: https://openairdocs.org/model/dehavilland-dhc-7-102/aircraft.md
- The Pratt & Whitney PT6A series engine: https://openairdocs.org/engine/pratt-whitney-pt6a-series.md

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