# N424MA: 1986 Fairchild SA227-AC

- Status: Valid registration
- Airframe: [Fairchild SA227-AC](https://openairdocs.org/model/fairchild-sa227-ac) (registry code 3377509, 12 seats)
- Engine: [AiResearch TPE331 series](https://openairdocs.org/engine/airesearch-tpe331-series) (registry code 01514)
- Data sheets: [TCDS A8SW](https://openairdocs.org/tcds/A8SW) (Ontic Engineering and Manufacturing Inc.) (OpenAirDocs)
- Serial number: AC-639
- Year built: 1986
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, normal
- Airworthiness date: February 28, 1986
- Certificate issued: April 30, 2007
- Expires: January 31, 2030
- Mode S code: A50B8F
- Registered owner: [Uas Transervices Inc](https://openairdocs.org/faa-owner/UAS%20TRANSERVICES%20INC)
- Location: [Boca Raton, FL](https://openairdocs.org/faa-place/FL/Boca%20Raton)
- Owner type: Corporation
- Owner's area on the map: 26.3746° N, 80.1066° W: Placed by OpenAirDocs at the center of ZIP code 33431, 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=424MA
- Page: https://openairdocs.org/aircraft/N424MA

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 AiResearch TPE331 model are included.

## ADs that may apply (OpenAirDocs): 92 in force

### Matched by airframe (Fairchild SA227-AC)

- [AD 2017-07-01](https://openairdocs.org/ad/2017-07-01): Propellers/Propulsors · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 7 more. Effective May 5, 2017
- [AD 2016-25-12](https://openairdocs.org/ad/2016-25-12): Horizontal Stabilizer Structure · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 7 more. Effective Jan 12, 2017
- [AD 2016-15-02](https://openairdocs.org/ad/2016-15-02): Flight Controls · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 9 more. Effective Aug 26, 2016
- [AD 2016-10-01](https://openairdocs.org/ad/2016-10-01): Elevator Control System · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 7 more. Effective Jun 15, 2016
- [AD 2015-19-10](https://openairdocs.org/ad/2015-19-10): Flight Controls · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 9 more. Effective Nov 3, 2015
- [AD 2014-15-01](https://openairdocs.org/ad/2014-15-01): Fuselage Main, Structure · M7 Aerospace SA227-AC (C-26A), SA227-AT, SA227-BC (C-26A) and 2 more. Effective Aug 27, 2014
- [AD 2014-09-02](https://openairdocs.org/ad/2014-09-02): Flight Controls · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 9 more. Effective Jun 5, 2014
- [AD 2014-06-01](https://openairdocs.org/ad/2014-06-01): Fuselage Main, Bulkhead · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 9 more. Effective Apr 25, 2014
- [AD 2012-18-01](https://openairdocs.org/ad/2012-18-01): Wing, Fuselage Attach Fitting · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 7 more. Effective Sep 21, 2012
- [AD 2011-02-04](https://openairdocs.org/ad/2011-02-04): Flight Compartment Windows · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 9 more. Effective Jan 24, 2011
- [AD 2009-11-06](https://openairdocs.org/ad/2009-11-06): Hydraulic tube assemblies · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 5 more. Effective Jul 2, 2009
- [AD 2007-16-03](https://openairdocs.org/ad/2007-16-03): Pitch trim actuators · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 8 more. Effective Sep 7, 2007
- [AD 2005-18-20](https://openairdocs.org/ad/2005-18-20): "FASTprop" propeller de-icers · Hartzell PHC-C3YF-1RF/F8468A(B,K)-8R constant speed propeller (STC SA00718LA or 17 others). Effective Oct 14, 2005
- [AD 2005-06-13](https://openairdocs.org/ad/2005-06-13): Wing spar center web cutout · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective May 2, 2005
- [AD 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 2005
- [AD 2003-19-10](https://openairdocs.org/ad/2003-19-10): Fuel boost pump · M7 Aerospace SA226-AT, SA226-T, SA226-T(B) and 8 more. Effective Nov 7, 2003
- [AD 2002-08-02](https://openairdocs.org/ad/2002-08-02): Brake Shuttle Valves · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Jun 6, 2002
- [AD 2002-08-01](https://openairdocs.org/ad/2002-08-01): Brake Master Cylinders · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Jun 6, 2002
- [AD 2002-01-16](https://openairdocs.org/ad/2002-01-16): Dual Engine Flameout · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 5 more. Effective Mar 11, 2002
- [AD 2000-17-01](https://openairdocs.org/ad/2000-17-01): Brake System · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Oct 6, 2000
- [AD 2000-17-11](https://openairdocs.org/ad/2000-17-11): Main Landing Gear (MLG) Assemblies · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Sep 22, 2000
- [AD 2000-06-04](https://openairdocs.org/ad/2000-06-04): Pneumatic Deicing Boots · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 8 more. Effective May 5, 2000
- [AD 98-08-20](https://openairdocs.org/ad/98-08-20): Autopilot Servo Actuators · Alliedsignal Avionics Autopilot Servo Actuators, Mystere-Falcon 20 - C5, Mystere-Falcon 20 - D5 and 17 more. Effective Jun 2, 1998
- [AD 98-06-25](https://openairdocs.org/ad/98-06-25): Cargo Door Lower Belt Frames · M7 Aerospace SA226-AT, SA226-TC, SA227-AC (C-26A) and 1 more. Effective Apr 27, 1998
- [AD 97-11-13](https://openairdocs.org/ad/97-11-13): Generator Fault Transformer Wiring · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Jul 11, 1997
- [AD 97-10-13](https://openairdocs.org/ad/97-10-13): Elevator Torque Tube Arm · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 5 more. Effective Jul 8, 1997
- [AD 97-01-12](https://openairdocs.org/ad/97-01-12): Ground Proximity Warning System · Airtell International Ground Proximity Warning System, Mystere-Falcon 200, EMB-110P1 and 20 more. Effective Feb 25, 1997
- [AD 96-20-08](https://openairdocs.org/ad/96-20-08): Replace Side Cockpit Window · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective Nov 14, 1996
- [AD 96-19-05](https://openairdocs.org/ad/96-19-05): Main Landing Gear or Nose Landing Gear Assemblies or Yokes · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective Oct 1, 1996
- [AD 96-09-16](https://openairdocs.org/ad/96-09-16): Airplane Flight Manual (AFM) - Icing · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective Jun 11, 1996
- [AD 95-17-09 R1](https://openairdocs.org/ad/95-17-09-R1): Essential Bus Current Limiters · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective May 13, 1996
- [AD 94-07-10 R1](https://openairdocs.org/ad/94-07-10-R1): Upper Wing Skin Inspection · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective Mar 25, 1996
- [AD 96-03-03](https://openairdocs.org/ad/96-03-03): Power Control Cable Safety Wire Nuts · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective Mar 15, 1996
- [AD 95-24-11](https://openairdocs.org/ad/95-24-11): Foreign Object Damage Barriers In Floorboards · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 7 more. Effective Jan 3, 1996
- [AD 95-01-07](https://openairdocs.org/ad/95-01-07): Lower Wing Skin Panels · M7 Aerospace SA227-AC (C-26A) and SA227-AT. Effective Feb 17, 1995
- [AD 93-15-01](https://openairdocs.org/ad/93-15-01): Horizontal Stabilizer Pivot Fitting Fasteners · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 5 more. Effective Sep 16, 1993
- [AD 93-09-05](https://openairdocs.org/ad/93-09-05): Elevator Return Spring · M7 Aerospace SA226-AT, SA226-TC, SA227-AC (C-26A) and 1 more. Effective Jun 18, 1993
- [AD 93-07-12](https://openairdocs.org/ad/93-07-12): Horizontal Stabilizer Rear Spar Inspection · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective May 28, 1993
- [AD 93-08-09](https://openairdocs.org/ad/93-08-09): Airplane Flight Manual (AFM) Change - Nose Wheel · M7 Aerospace SA227-AC (C-26A), SA227-AT, SA227-BC (C-26A) and 2 more. Effective May 14, 1993
- [AD 92-19-08](https://openairdocs.org/ad/92-19-08): Rudder Pedal Link Attachment · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Oct 16, 1992
- [AD 92-18-07](https://openairdocs.org/ad/92-18-07): Power Lever Detent Arms · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 5 more. Effective Oct 2, 1992
- [AD 90-14-01](https://openairdocs.org/ad/90-14-01): Passenger Seat · M7 Aerospace SA226-AT, SA226-TC, SA227-AC (C-26A) and 1 more. Effective Feb 11, 1991
- [AD 90-24-03](https://openairdocs.org/ad/90-24-03): Rudder Trim Link Assemblies · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 10 more. Effective Jan 25, 1991
- [AD 85-22-06 R1](https://openairdocs.org/ad/85-22-06-R1): Stall Avoidance System (SAS) · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Oct 19, 1990
- [AD 90-03-19 R1](https://openairdocs.org/ad/90-03-19-R1): Electrical System · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Aug 15, 1990
- [AD 90-05-06 R1](https://openairdocs.org/ad/90-05-06-R1): Main Landing Gear Doors · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Aug 13, 1990
- [AD 87-02-02](https://openairdocs.org/ad/87-02-02): Primary Control Cables · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Jan 27, 1987
- [AD 86-10-08](https://openairdocs.org/ad/86-10-08): Elevator Gust Lock System · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective May 28, 1986
- [AD 84-13-01](https://openairdocs.org/ad/84-13-01): Generator Control J-Box · M7 Aerospace SA226-TC, SA227-AC (C-26A), SA227-AT and 1 more. Effective Jul 5, 1984
- [AD 83-15-09](https://openairdocs.org/ad/83-15-09): Nose Wheel Steering System Modification · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Sep 8, 1983

### Matched by engine (AiResearch TPE331 series)

- [AD 2018-22-01](https://openairdocs.org/ad/2018-22-01): Turbine Section · Honeywell International TPE331-10, TPE331-10N, TPE331-10R and 8 more. Effective Dec 10, 2018
- [AD 2018-17-15](https://openairdocs.org/ad/2018-17-15): Turbine Engine Combustion Section · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 39 more. Effective Oct 22, 2018
- [AD 2018-13-05](https://openairdocs.org/ad/2018-13-05): Turbine Engine Reduction Gear · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 18 more. Effective Jul 26, 2018
- [AD 2016-21-07](https://openairdocs.org/ad/2016-21-07): Fuel control drive · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 26 more. Effective Nov 28, 2016
- [AD 2016-18-17](https://openairdocs.org/ad/2016-18-17): Compressor impeller · Honeywell International TPE331-10, TPE331-10AV, TPE331-10GP and 22 more. Effective Nov 4, 2016
- [AD 2015-18-03](https://openairdocs.org/ad/2015-18-03): Engine propeller shaft coupling failures · Honeywell International TPE331-10, TPE331-10R, TPE331-10U and 8 more. Effective Nov 13, 2015
- [AD 2012-02-06](https://openairdocs.org/ad/2012-02-06): First stage turbine disks · Honeywell International TPE331-10, TPE331-10AV, TPE331-10GP and 12 more. Effective Mar 15, 2012
- [AD 2011-18-51 R1](https://openairdocs.org/ad/2011-18-51-R1): Main shaft bearing · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 82 more. Effective Oct 19, 2011
- [AD 2009-17-05](https://openairdocs.org/ad/2009-17-05): First stage turbine disks · Honeywell International TPE331-10, TPE331-10A, TPE331-10AV and 20 more. Effective Sep 1, 2009
- [AD 2006-14-03](https://openairdocs.org/ad/2006-14-03): New flight cycle counting method for first, second, and third-stage turbine rotors · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 48 more. Effective Aug 9, 2006
- [AD 2004-09-29](https://openairdocs.org/ad/2004-09-29): First Stage Turbine Disks · Honeywell International TPE331-10, TPE331-10A, TPE331-10AV and 20 more. Effective Jun 15, 2004
- [AD 2002-25-02](https://openairdocs.org/ad/2002-25-02): First stage compressors implellers · Honeywell International TPE331-10, TPE331-10A, TPE331-10AV and 35 more. Effective Jan 21, 2003
- [AD 2002-21-15](https://openairdocs.org/ad/2002-21-15): Second stage turbine stator inner seal support · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 9 more. Effective Nov 26, 2002
- [AD 2002-12-09](https://openairdocs.org/ad/2002-12-09): Spectrometric Oil Analysis Program (SOAP) Sampling of Oil and Filter, Gearbox Components · Honeywell International TPE331-11U, TPE331-12B, TPE331-12JR and 3 more. Effective Jul 3, 2002
- [AD 2001-21-02](https://openairdocs.org/ad/2001-21-02): Airplane Flight Manual--Electronic Engine Controls · Honeywell International TPE331-10N, TPE331-12B and TPE331-8. Effective Nov 19, 2001
- [AD 98-12-09](https://openairdocs.org/ad/98-12-09): Fuel Manifold · Honeywell International TPE331-10, TPE331-10A, TPE331-10AV and 29 more. Effective Aug 7, 1998
- [AD 98-04-15](https://openairdocs.org/ad/98-04-15): Turbine Stators · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 9 more. Effective Apr 27, 1998
- [AD 97-15-10](https://openairdocs.org/ad/97-15-10): Engine Inlet Ice Protection · Honeywell International TPE331-10, TPE331-10A, TPE331-10AV and 39 more. Effective Sep 22, 1997
- [AD 95-16-08](https://openairdocs.org/ad/95-16-08): Life Limited Turbine Components · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 62 more. Effective Sep 5, 1995
- [AD 94-26-07](https://openairdocs.org/ad/94-26-07): Fuel Control Governor Drive · Honeywell International TPE331-10, TPE331-10A, TPE331-10B and 32 more. Effective Apr 18, 1995
- [AD 94-09-08](https://openairdocs.org/ad/94-09-08): Third Stage Stator Turbine Assemblies · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 7 more. Effective May 20, 1994
- [AD 93-15-11](https://openairdocs.org/ad/93-15-11): Propeller Pitch Control (PPC) Gasket · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 58 more. Effective Sep 7, 1993
- [AD 92-26-08](https://openairdocs.org/ad/92-26-08): Third Stage Stator Assemblies · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 7 more. Effective Jul 15, 1993
- [AD 93-05-09](https://openairdocs.org/ad/93-05-09): Third Stage Turbine Stator Assemblies · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 9 more. Effective Jun 28, 1993
- [AD 93-02-01](https://openairdocs.org/ad/93-02-01): Stratoflex Fuel Manifold Assemblies · Honeywell International TPE331-10, TPE331-10A, TPE331-10B and 21 more. Effective Mar 18, 1993
- [AD 89-07-07 R1](https://openairdocs.org/ad/89-07-07-R1): Oil Scavenge Pump Assembly · Honeywell International TPE331-1, TPE331-10, TPE331-10R and 26 more. Effective Oct 30, 1989
- [AD 86-08-06 R1](https://openairdocs.org/ad/86-08-06-R1): Second Stage Turbine Rotor Assembly · Honeywell International TPE331-25AA, TPE331-25AB, TPE331-25DA and 7 more. Effective Dec 21, 1987
- [AD 84-10-06 R1](https://openairdocs.org/ad/84-10-06-R1): Fuel Pump Assemblies · Honeywell International TPE331-1, TPE331-10, TPE331-10B and 45 more. Effective Dec 26, 1984
- [AD 84-01-04](https://openairdocs.org/ad/84-01-04): Third Stage Turbine Wheels · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 11 more. Effective Jan 25, 1984
- [AD 73-26-07 R3](https://openairdocs.org/ad/73-26-07-R3): Fuel Pump Shaft Internal Drive Splines · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 39 more. Effective Jul 31, 1980
- [AD 78-25-08 R3](https://openairdocs.org/ad/78-25-08-R3): Turbine Rotor · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 11 more. Effective Jun 12, 1980
- [AD 79-12-04](https://openairdocs.org/ad/79-12-04): Forged Third Stage Turbine Wheel Blade · Honeywell International TPE331-10. Effective May 10, 1979
- [AD 78-05-02](https://openairdocs.org/ad/78-05-02): Propeller Pitch Control Cam Follower Pin · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 11 more. Effective Apr 5, 1979
- [AD 76-16-01](https://openairdocs.org/ad/76-16-01): Bearing Oil Transfer Tube · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 11 more. Effective Aug 6, 1976
- [AD 75-10-05](https://openairdocs.org/ad/75-10-05): Torque Sensor Assembly Mounting Arm · Honeywell International TPE331-1, TPE331-2, TPE331-3U and 3 more. Effective Jul 11, 1975
- [AD 74-10-10](https://openairdocs.org/ad/74-10-10): Fuel Control Assembly Support Bracket · Honeywell International TPE331-1, TPE331-2, TPE331-3U and 2 more. Effective Jul 11, 1975
- [AD 74-24-05](https://openairdocs.org/ad/74-24-05): Propeller Pitch Control Sleeve Assembly · Honeywell International TPE331-3U, TPE331-3UW, TPE331-5 and 1 more. Effective Nov 26, 1974
- [AD 70-19-02](https://openairdocs.org/ad/70-19-02): High Speed Pinion Bearings · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 3 more. Effective Feb 20, 1974
- [AD 71-05-07](https://openairdocs.org/ad/71-05-07): High Speed Pinion Assembly · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 30 more. Effective Apr 8, 1972
- [AD 70-16-09](https://openairdocs.org/ad/70-16-09): High Speed Pinion Assembly · Honeywell International TPE331-3W
- [AD 70-04-04](https://openairdocs.org/ad/70-04-04): High Speed Pinion Retaining Nut · Honeywell International TPE331-1, TPE331-1U, TPE331-1UA and 3 more

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

- [AD 2008-12-16](https://openairdocs.org/ad/2008-12-16) (historical): Left-hand (LH) and right-hand (RH) inboard wing leading edge/battery box areas · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 4 more. Effective Jul 23, 2008
- [AD 2001-20-14](https://openairdocs.org/ad/2001-20-14) (historical): Brake Shuttle Valves · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 4 more. Effective Nov 21, 2001
- [AD 2000-03-17](https://openairdocs.org/ad/2000-03-17) (historical): Pitch Trim Actuator · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 8 more. Effective Apr 10, 2000
- [AD 98-19-15 R1](https://openairdocs.org/ad/98-19-15-R1) (historical): Pitch Trim Actuator · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 7 more. Effective Mar 3, 2000
- [AD 99-06-02](https://openairdocs.org/ad/99-06-02) (historical): Wing Spar Center Web · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 7 more. Effective Apr 16, 1999
- [AD 98-19-15](https://openairdocs.org/ad/98-19-15) (historical): Pitch Trim Actuator · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 7 more. Effective Sep 25, 1998
- [AD 97-23-01](https://openairdocs.org/ad/97-23-01) (historical): Pitch Trim Actuator · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 8 more. Effective Dec 1, 1997
- [AD 97-02-02](https://openairdocs.org/ad/97-02-02) (historical): Control Column Pitch Bearing Attaching Nuts · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 9 more. Effective Feb 6, 1997
- [AD 93-15-02 R2](https://openairdocs.org/ad/93-15-02-R2) (historical): Pitch Trim Actuator · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 8 more. Effective Jul 25, 1996
- [AD 94-07-10](https://openairdocs.org/ad/94-07-10) (historical): Upper Wing Skin Inspection · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 7 more. Effective May 27, 1994
- [AD 92-01-02](https://openairdocs.org/ad/92-01-02) (historical): Parking Brake System · M7 Aerospace LP SA226-AT, SA226-T, SA226-TC and 4 more. Effective Jan 16, 1992
- [AD 86-25-04](https://openairdocs.org/ad/86-25-04) (historical): POH/AFM Appendix - Icing · M7 Aerospace LP SA227-AC (C-26A), SA227-AT, SA227-BC (C-26A) and 4 more. Effective Dec 15, 1986
- [AD 2018-02-14](https://openairdocs.org/ad/2018-02-14) (historical): Turbine Engine Combustion Section · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 38 more. Effective Feb 28, 2018
- [AD 2015-12-04](https://openairdocs.org/ad/2015-12-04) (historical): Fuel control unit (FCU) · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 26 more. Effective Jul 22, 2015
- [AD 2011-18-51](https://openairdocs.org/ad/2011-18-51) (historical): Main shaft bearing · Honeywell International TPE331-1, TPE331-10, TPE331-10A and 82 more
- [AD 2006-15-08](https://openairdocs.org/ad/2006-15-08) (historical): Woodward fuel control unit (FCU) assemblies · Honeywell International TPE331-1, TPE331-10, TPE331-10AV and 26 more. Effective Aug 24, 2006
- [AD 88-12-10](https://openairdocs.org/ad/88-12-10) (historical): Turbine Rotor · Honeywell International TPE331-10, TPE331-10R, TPE331-10U and 6 more. Effective Jun 6, 1988
- [AD 92-02-19 PL](https://openairdocs.org/ad/92-02-19-PL) (historical): Fuel Manifold Assembly Leak · Honeywell International TPE331-10, TPE331-10A, TPE331-10AV and 29 more
- [AD 91-04-02](https://openairdocs.org/ad/91-04-02) (historical): Third stage stator assembly · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 7 more
- [AD 90-21-01](https://openairdocs.org/ad/90-21-01) (historical): Third stage stator assembly · Honeywell International TPE331-1, TPE331-2, TPE331-2UA and 7 more

All 112: https://openairdocs.org/aircraft/N424MA/ads.md

## Information bulletins (advisory) (18 in force)

- [SAIB 2026-15](https://openairdocs.org/saib/2026-15): Forward Pressure Bulkhead. Issued Sep 9, 2026
- [SAIB 2026-14](https://openairdocs.org/saib/2026-14): Rudder Control System, Brake. Issued Aug 25, 2026
- [SAIB CE-20-09](https://openairdocs.org/saib/CE-20-09): Nacelle/Pylon, Frame/Spar/Rib. Issued May 13, 2020
- [SAIB CE-18-11](https://openairdocs.org/saib/CE-18-11): Flight Controls, Elevator Control System. Issued Feb 9, 2018
- [SAIB CE-17-04](https://openairdocs.org/saib/CE-17-04): Landing Gear, Main Landing Gear. Issued Dec 16, 2016
- [SAIB CE-16-06](https://openairdocs.org/saib/CE-16-06): Flight Controls, Rudder Control System. Issued Nov 20, 2015
- [SAIB CE-16-04](https://openairdocs.org/saib/CE-16-04): Engine Controls, Power Lever. Issued Nov 2, 2015
- [SAIB CE-15-09](https://openairdocs.org/saib/CE-15-09): Windows; Flight Compartment Windows. Issued Feb 24, 2015
- [SAIB CE-15-05R1](https://openairdocs.org/saib/CE-15-05R1): Flight Controls, Aileron Control System. Issued Nov 26, 2014
- [SAIB CE-13-42](https://openairdocs.org/saib/CE-13-42): Wings, Ailerons. Issued Aug 1, 2013
- [SAIB CE-13-41](https://openairdocs.org/saib/CE-13-41): Landing Gear, Landing Gear Actuator. Issued Jul 23, 2013
- [SAIB CE-13-10](https://openairdocs.org/saib/CE-13-10): Windshield/Door Rain/Ice Removal. Issued Dec 21, 2012
- [SAIB CE-12-08](https://openairdocs.org/saib/CE-12-08): Flight Controls, Elevator Control System. Issued Nov 8, 2011
- [SAIB CE-11-26](https://openairdocs.org/saib/CE-11-26): Wings: Wing Skin. Issued Mar 30, 2011
- [SAIB NE-16-19](https://openairdocs.org/saib/NE-16-19): Turbine Engine Compressor Section  Stator Nozzle Distress. Issued Jul 22, 2016
- [SAIB NE-16-18](https://openairdocs.org/saib/NE-16-18): Power Lever  Loss of Power Control. Issued Jul 11, 2016
- [SAIB NE-06-70](https://openairdocs.org/saib/NE-06-70): . Issued Sep 25, 2006
- [SAIB NE-06-69](https://openairdocs.org/saib/NE-06-69): . Issued Sep 20, 2006
- [SAIB CE-15-05](https://openairdocs.org/saib/CE-15-05) (historical): Flight Controls, Aileron Control System. Issued Nov 25, 2014

## NTSB investigations

None matched to N424MA.

## FAA accident and incident reports (4)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19920729045199I](https://openairdocs.org/incident/19920729045199I), Jul 29, 1992: Swrngn SA227AC (N424MA), Muskegon, MI, Minor damage. Lost directional control on rollout. Crew unable to keep aircraft on runway. Found right side brakes were locked.
- [Incident 19900707040739I](https://openairdocs.org/incident/19900707040739I), Jul 7, 1990: Swrngn SA227AC (N424MA), Erie, PA, Minor damage. During landing approach the aircraft was struck by a bird.
- [Incident 19900502024069I](https://openairdocs.org/incident/19900502024069I), May 2, 1990: Swrngn SA227AC (N424MA), Milwaukee, WI. Loss of directional control on rollout. Nose wheel steering faulty. Nose wheel actuator not properly installed.
- [Incident 19870718077059I](https://openairdocs.org/incident/19870718077059I), Jul 18, 1987: Swrngn SA227AC (N424MA), Mosinee, WI, Minor damage. While making a ground engine check a step stool was struck by propeller and propelled into the fuselage.

## Service difficulty reports (31)

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 JIKA2017032101](https://openairdocs.org/sdr/JIKA2017032101), Mar 14, 2017: VALVE. SEIZED. DURING NORMAL CRUISE FLIGHT AT ABOUT 16,000 FT IN ICING CONDITIONS, THE PILOT’S AIRSPEED INDICATION WAS READING LOW AND CONTINUED TO DROP UNTIL IT REACHED ZERO.
- [SDR JIKA2015091001](https://openairdocs.org/sdr/JIKA2015091001), Sep 10, 2015: HYDRAULIC LINE. CHAFED. ON VISUAL APPROACH, PILOT SELECTED LG TO THE EXTENDED POSITION. THE LG POSITION INDICATORS LIGHTS FOR THE MLG REMAINED RED & THE LIGHT FOR NLG DID NOT ILLUMINAT
- [SDR JIKA2015081001](https://openairdocs.org/sdr/JIKA2015081001), Aug 10, 2015: WIRE HARNESS. DAMAGED. EN-ROUTE THE PILOT NOTICED THE RT ENG EGT SPIKED 100 DEGREES CELSIUS, THE RT ENG FUEL BYPASS LIGHT ALSO ILLUMINATED. THE PILOT FOLLOWED THE EMER CHECKLIST & PER
- [SDR JIKA2014062201](https://openairdocs.org/sdr/JIKA2014062201), Jun 22, 2014: HYDRAULIC LINE. CRACKED. ON APPROACH THE PILOT NOTICED A HIGH PITCH WHINE COMING FROM WHERE HE BELIEVED TO BE THE RT ENG. AFTER THREE SECONDS THE PILOT NOTICED BOTH HYD LOW PRESS ANNUNC
- [SDR MALA965216](https://openairdocs.org/sdr/MALA965216), Nov 23, 1996: SWITCH. OUT OF ADJUST. FLT 3429 - ON CLIMB-OUT FROM MSP, THE NOSE GEAR WOULD NOT REMAIN UP AND LOCKED AFTER GEAR RETRACTION. THE AIRCRAFT RETURNED TO MSP. MAINTENANCE ADJUSTED THE NLG
- [SDR MALA965155](https://openairdocs.org/sdr/MALA965155), Oct 2, 1996: SWITCH. FAILED. FLT 3467 - ON APPROACH TO DTW, THE RIGHT INTRANSIT LIGHT FAILED TO ILLUMINATE UPON GEAR EXTENSION. MAINTENANCE REPLACED THE RIGHT INBOARD DOWN POSITION SWITCH. 
- [SDR MALA965137](https://openairdocs.org/sdr/MALA965137), Sep 18, 1996: POSITION IND. FAILED. FLT 2903 - ON APPROACH TO DTW, THE RIGHT GEAR DOWN LIGHT FAILED TO ILLUMINATE UPON GEAR EXTENSION. THE INDICATOR LIGHT WOULD ILLUMINATE INTERMITTENTLY WHEN WIGG
- [SDR MALA965067](https://openairdocs.org/sdr/MALA965067), Jul 7, 1996: DOOR FRAME. CRACKED. DURING A SCHEDULED INSPECTION IN MSP, MAINTENANCE PERFORMED REPAIR TO A CRACK IN THE CARGO DOOR FRAME, P/N 27-22085, AT FS 491, BY REMOVING DAMAGED GAS STRUT MO
- [SDR MALA965066](https://openairdocs.org/sdr/MALA965066), Jul 7, 1996: DOOR FRAME. CRACKED. DURING A SCHEDULED INSPECTION IN MSP, MAINTENANCE PERFORMED REPAIR TO A CRACK IN THE CARGO DOOR FRAME, P/N 27-22085, AT FS 438.060 BY REMOVING DAMAGED GAS STRUT
- [SDR MALA965018](https://openairdocs.org/sdr/MALA965018), Jun 6, 1996: SUPPORT. CRACKED. DURING SCHEDULED MAINTENANCE IN MSP, MAINTENANCE FOUND PILOTS SIDE SEAT TRACK SUPPORT CHANNEL AT FS 107 CRACKED BETWEEN RIVETS ON NUT PLATE. FABRICATED AND INST
- [SDR MALA964996](https://openairdocs.org/sdr/MALA964996), May 16, 1996: SKIN. CHAFED. DURING A SCHEDULED INSPECTION IN MSP, THE LEFT FLAP UPPER INBOARD SKIN HAD A HOLE CHAFED THROUGH IT. REPAIRS WERE COMPLETED TO THE AIRCRAFT BY REPLACING THE LEF
- [SDR MALA964889](https://openairdocs.org/sdr/MALA964889), Feb 23, 1996: INTRANSIT LIGHT. MALFUNCTIONED. FLT NR 3069 - ON CLIMB-OUT FROM CVG, THE GEAR INTRANSIT LIGHTS REMAINED ON AFTER GEAR RETRACTION. THE CREW CYCLED THE GEAR AND ALL INDICATIONS WERE NORMAL. THE 
- [SDR MALA954765](https://openairdocs.org/sdr/MALA954765), Dec 26, 1995: WHEEL. OUT OF BALANCE. FLT NR 3453 - AFTER TAKEOFF FROM DTW, CREW NOTED A VIBRATION FROM THE NOSE LANDING GEAR. THE AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE P
- [SDR MALA954692](https://openairdocs.org/sdr/MALA954692), Nov 4, 1995: SEAL. DAMAGED. FLT NR 3453 - IN CRUISE FLIGHT, A LOUD SQUEAL WAS NOTED FROM THE PASSENGER DOOR. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE FOUND THAT THE PASSENGER DOOR FRAME F
- [SDR MALA954634](https://openairdocs.org/sdr/MALA954634), Sep 14, 1995: STRUT. REQ'D SERVICE. FLT NR 3385 - ON CLIMB-OUT FROM YXU, THE GEAR DOOR POSITION WARNING LIGHT ILLUMINATED WHEN RETRACTING THE GEAR. THE LIGHT ALSO ILLUMINATED WHEN THE GEAR WAS EXT
- [SDR MALA954609](https://openairdocs.org/sdr/MALA954609), Aug 26, 1995: SWITCH. FAILED. FLT NR 3019 - ON APPROACH TO DTW, THE LEFT GEAR DOWN AND LOCKED LIGHT FAILED TO ILLUMINATE. THE CREW RECYCLED THE GEAR AND A NORMAL INDICATION WAS RECEIVED. MAI
- [SDR MALA954543](https://openairdocs.org/sdr/MALA954543), Jul 17, 1995: COMPRESSOR SEAL. FAILED. DURING AN ENGINE INSPECTION IN MSP, MAINTENANCE NOTED THAT THE RIGHT ENGINE COMPRESSOR SEAL WAS DETERIORATED. REPAIRS WERE COMPLETED BY REPLACING THE SEAL, P/N 
- [SDR MALA954519](https://openairdocs.org/sdr/MALA954519), Jun 27, 1995: SWITCH. FAILED. DAY - FLT 3004 - ON CLIMBOUT, THE RT MAIN GEAR INTRANSIT LIGHT DID NOT ILLUMINATE UPON GEAR RETRACTION. THE LIGHT ALSO, DID NOT ILLUMINATE DURING GEAR EXTENSION
- [SDR MALA954511](https://openairdocs.org/sdr/MALA954511), Jun 24, 1995: SWITCHES. LACK OF LUBE. DTW - FLT 3186 - ON APPROACH, THE RT GEAR INTRANSIT LIGHT FAILED TO ILLUMINATE UPON GEAR EXTENSION. ALL OTHER GEAR INDICATIONS WERE NORMAL. MAINTENANCE WAS UNAB
- [SDR MALA954504](https://openairdocs.org/sdr/MALA954504), Jun 12, 1995: ANGLE. LOOSE. MSP - DURING A SCHEDULED INSPECTION, THE RT I/B WING TO NACELLE LOWER TRANSIT ANGLE HAD LOOSE RIVETS. REPAIRS WERE COMPLETED BY REPLACING THE ANGLE IAW FAC ARP 
- [SDR MALA954499](https://openairdocs.org/sdr/MALA954499), Jun 8, 1995: SWITCH. DIRTY. CVG/DTW - FLT 3409 - DURING DEPARTURE FROM CVG, RT MLG INTRANSIT LIGHT DID NOT ILLUMINATE WHEN LANDING GEAR WAS RETRACTED. THE AIRCRAFT CONTINUED TO DTW. MAINTE
- [SDR MALA954481](https://openairdocs.org/sdr/MALA954481), Jun 1, 1995: SWITCH. DIRTY. DTW - FLT 3092 - ON APPROACH TO DTW, THE RIGHT RED GEAR INTRANSIT LIGHT WAS DIM DURING THE GEAR EXTENSION. THE AIRCRAFT CONTINUED TO DTW. MAINTENANCE CLEANED TH
- [SDR MALA954480](https://openairdocs.org/sdr/MALA954480), Jun 1, 1995: ALTIMETER. FAILED. DTW - FLT 3092 - ON CLIMB-OUT OF DTW, CAPTAIN'S ALTIMETER FLAGGED INTERMITTENTLY. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED THE NR 1 ALTIMETER. SYSTEM 
- [SDR MALA954467](https://openairdocs.org/sdr/MALA954467), May 17, 1995: DOOR FRAME. CRACKED. DURING BLOCK INSPECTION IN MSP, FOUND PASSENGER DOOR FRAME TO BE CRACKED. REPAIRS WERE COMPLETED BY FABRICATING AND INSTALLING A REPAIR DOUBLER AN STRAP TO THE 
- [SDR MALA954466](https://openairdocs.org/sdr/MALA954466), May 17, 1995: RIB. CRACKED. DURING BLOCK INSPECTION IN MSP, FOUND RT FLAP TO BE CRACKED AND CHAFED. REPAIRS WERE COMPLETED BY REPLACING THE INBOARD END NOSE RIB P/N 27-36004-010 DUE TO CRA
- [SDR MALA954465](https://openairdocs.org/sdr/MALA954465), May 17, 1995: FRAME. CRACKED. DURING BLOCK INSPECTION AT MSP, FOUND PASSENGER DOOR FRAME TO BE CRACKED. REPAIRS WERE COMPLETED BY REPLACING FRAME SECTIONS P/N 27-24043-033 AND 27-24043-035. 
- [SDR MALA954464](https://openairdocs.org/sdr/MALA954464), May 17, 1995: FRAME. CRACKED. DURING BLOCK INSPECTION AT MSP, FOUND CRACK IN BELT FRAME RELIEF RADIUS AT FS 212.27 DUE TO A CRACK. REPAIRS WERE COMPLETED USING A DOUBLER AND STIFFENER IAW FA
- [SDR 95ZZZW789](https://openairdocs.org/sdr/95ZZZW789), May 17, 1995: FRAME. CRACKED. DURING BLOCK INSPECTION AT MSP, FOUND PASSENGER DOOR FRAME TO BE CRACKED. REPAIRS WERE COMPLETED BY REPLACING FRAME SECTIONS P/N 27-24043-033 AND 27-24043-035. 
- [SDR MALA954342](https://openairdocs.org/sdr/MALA954342), Feb 27, 1995: TORQUE TUBE. ELONGATED HOLES. MSP - DURING SCHEDULED MAINTENANCE, MAINTENANCE FOUND THE ATTACHMENT BOLT HOLES OF THE RT ELEVATOR TORQUE TUBE, PN 27-44026-003, ELONGATED. COMPLETED REPAIR TO 
- [SDR MALA954300](https://openairdocs.org/sdr/MALA954300), Feb 6, 1995: INTRANSIT LIGHT. FAILED. FLT 3455 - ON APPROACH TO DTW, THE NOSE GEAR RED INTRANSIT LIGHT FAILED TO ILLUMINATE DURING THE GEAR EXTENSION. THE AIRCRAFT CONTINUED TO DTW. MAINTENANCE WAS 
- [SDR MALA954279](https://openairdocs.org/sdr/MALA954279), Jan 27, 1995: DNLOCK SW. FAILED. FLT 3494 - ON APPROACH TO MSP, THE RIGHT GEAR INTRANSIT LIGHT DOESN'T ILLUMINATE DURING THE GEAR EXTENSION. MAINTENANCE REPLACED THE RIGHT INBOARD DOWN SWITCH. 

## STCs that may be installed (OpenAirDocs) (130, 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 (Fairchild SA227-AC)

- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE): Fabrication and installation of Landing Light Controller. TCW Technologies, LLC
- [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC
- [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc
- [STC SA11300DS](https://openairdocs.org/stc/SA11300DS): Upgrade previously installed Collins Aerospace Radar Altimeter. BHE & Associates Ltd
- [STC SA8006NM](https://openairdocs.org/stc/SA8006NM): Installation of interior fluorescent cabin lighting system. Bruce Aerospace Inc
- [STC SA8773SW](https://openairdocs.org/stc/SA8773SW): Installation of a TCAS-791 Traffic Alert and Collision Avoidance System (TCAS I). Acron Aviation Inc
- [STC SA09768DS](https://openairdocs.org/stc/SA09768DS): Installation of S-TEC 01236 Digital Flight Control System (DFCS). S-Tec Corporation
- [STC SA04627CH](https://openairdocs.org/stc/SA04627CH): Installation of Luma Technologies LT-4048 Series LED Display Panel. Luma Technologies LLC
- [STC SA04051CH](https://openairdocs.org/stc/SA04051CH): Certification of Automatic Dependent Surveillance - Broadcast (ADS-B) Out System with Rockwell Collins TDR-94/-94D Transponders. CMD Flight Solutions LLC
- [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc
- [STC ST00789WI](https://openairdocs.org/stc/ST00789WI): Installation of the Fairchild Digital Data Flight Recorder Model F800 or F1000. Worldwide Aircraft Services LLC
- [STC SA09111AC](https://openairdocs.org/stc/SA09111AC): Installation of Concorde RG390ES sealed lead-acid battiers. Ontic Engineering and Manufacturing Inc
- [STC SA10352SC](https://openairdocs.org/stc/SA10352SC): Installation of an Aviation Communication & Surveillance Systems (ACSS) TCAS II, dual ACSS Mode-S transponders and dual Sextant VSI/TCAS display. Ontic Engineering and Manufacturing Inc
- [STC SA5901NM](https://openairdocs.org/stc/SA5901NM): Mk VI ground proximity warning system installed. Honeywell International Inc
- [STC SA04514NY](https://openairdocs.org/stc/SA04514NY): Single/Dual Transponder System ADS-B Upgrade. Scandinavian Avionics Design ApS
- [STC SA2062CE-D](https://openairdocs.org/stc/SA2062CE-D): Installation of King KNS-660 multi-sensor flight management system. Honeywell International Inc
- [STC SA2060CE-D](https://openairdocs.org/stc/SA2060CE-D): Installation of King KFC-400 automatic flight control system. Honeywell International Inc
- [STC SA2064CE-D](https://openairdocs.org/stc/SA2064CE-D): Installation of Bendix 3 tube or 5 tube EFS-10 electronic flight instrument system. Honeywell International Inc
- [STC SA02677LA](https://openairdocs.org/stc/SA02677LA): Modification to upgrade the existing Mode S Transponder system by installing the ACSS NXT-700 Transponder with ADS-B Out and optionally install the ACSS NXG-900 GPS as the position source for ADS-B Out. Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC SA02678LA](https://openairdocs.org/stc/SA02678LA): Modification to upgrade the existing Mode S Transponder system by installing the ACSS NXT-600 Transponder with ADS-B Out and optionally install the ACSS NXG-900 GPS as the position source for ADS-B Out. Aviation Communication and Surveillance Systems (ACSS) LLC
- [STC SA01714WI](https://openairdocs.org/stc/SA01714WI): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. Garmin International Inc
- [STC SA04405CH](https://openairdocs.org/stc/SA04405CH): Installation of a dual Garmin G700TXi Display System in accordance with Toledo Jet Center Master Data List, Document No. TJC-G700.001-MDL, Revision IR, dated May 6, 2019, or later FAA approved revision. Toledo Jet Center LLC
- [STC SA00163MC](https://openairdocs.org/stc/SA00163MC): Installation of Airborne Systems Training and Research (ASTARS III) systems. Naval Air Systems Command PMA-207
- [STC SA04273NY](https://openairdocs.org/stc/SA04273NY): Installation of the Garmin G950 Integrated Flight Deck System upgrade. Midland Instruments Ltd
- [STC SA02796CH](https://openairdocs.org/stc/SA02796CH): Install Air Ambulance conversion. Paul/ Lanna Egan LLC
- [STC SA02890AT](https://openairdocs.org/stc/SA02890AT): Installation of a Honeywell Model CAS 67A Traffic Alert and Collision Avoidance System II (TCAS II) with Single Mode-S Transponder. Toledo Jet Center, LLC
- [STC SA04165NY](https://openairdocs.org/stc/SA04165NY): Installation of Latitude Technologies Skynode S200 Satcom system must be performed. Latitude Technologies Corporation
- [STC SA02153LA-D PAGE 2](https://openairdocs.org/stc/SA02153LA-D%20PAGE%202): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International Inc
- [STC SA02013CH](https://openairdocs.org/stc/SA02013CH): Installation of Avidyne Corporation Traffic Advisory System (TAS). Avidyne Corporation
- [STC SA01933LA-D](https://openairdocs.org/stc/SA01933LA-D): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc
- [STC SA8919SW](https://openairdocs.org/stc/SA8919SW): Conversion of aircraft from passenger configuration to cargo only configuration. Worldwide Aviation Engineering LLC
- [STC SA03973NY](https://openairdocs.org/stc/SA03973NY): Replacement of existing TCAS 7.0 by TCAS 7.1. Scandinavian Avionics Design ApS
- [STC ST00276WI](https://openairdocs.org/stc/ST00276WI): Installation of Kedeg Company 21BC11e Coaleser Assemly. Purolator Facet, Inc
- [STC SA00343BO](https://openairdocs.org/stc/SA00343BO): Installation of a single configuration or a dual configuration Avidyne Corporation Integrated Flight Display, Model IFD540 loaded with Release 10.0 software (or later FAA approved release). Avidyne Corporation
- [STC SA00352BO PAGE 1](https://openairdocs.org/stc/SA00352BO%20PAGE%201): Installation of an Avidyne Corporation Mode A/C/S Transponder with ADS-B Out capability, Model AXP340 loaded with Version 3.13 software (or later FAA approved version),. Avidyne Corporation
- [STC SA02444LA](https://openairdocs.org/stc/SA02444LA): Interior Arrangement. Ameriflight LLC
- [STC SA1542GL](https://openairdocs.org/stc/SA1542GL): Install Aero Medical Products Mfg., Inc. Air Ambulance Stretcher P/N 126 using Installation Kit P/N 805. Paul/ Lanna Egan LLC
- [STC SA00780SE](https://openairdocs.org/stc/SA00780SE): Installation of the True Lock Safety Retention Axle Lock Nut System. True Lock LLC
- [STC SA01969SE](https://openairdocs.org/stc/SA01969SE): Installation of a Mid-Continent MD302 Standby Attitude Module. Mid-Continent Instruments and Avionics
- [STC SA01229SE PAGE 1](https://openairdocs.org/stc/SA01229SE%20PAGE%201): Installation of GNS 480 (CNX80) GPS WAAS Navigator with integrated VHF Navigation and Communication radios. Garmin International Inc
- [STC SA01933LA-D PAGE 1](https://openairdocs.org/stc/SA01933LA-D%20PAGE%201): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc
- [STC SA04182AT](https://openairdocs.org/stc/SA04182AT): Installation of Pilot and Copilot Main Windshield. PPG Aerospace
- [STC SA02121SE](https://openairdocs.org/stc/SA02121SE): Installation of Garmin GTS 825 (TAS) or GTS 855 (TCAS I) Traffic System. Garmin International Inc
- [STC SA00269BO](https://openairdocs.org/stc/SA00269BO): Installation of Avidyne Corporation TWX 670 Tactical Weather Detection System P/N 850-00026-000-( ) consisting of Avidyne Processor P/N 700-00033-000-( ), Sensor Systems Inc. Antenna P/N S72-1715-1 with doubler plate P/N S72-171530-1, and Avidyne Mounting Tray P/N 700-00034-000. Avidyne Corporation
- [STC SA03893AT](https://openairdocs.org/stc/SA03893AT): Installation of MT-Propeller Model MTV-27-1-E-C-F-R(G)/CFRL250-103. MT-Propeller USA Inc
- [STC SA02149AK](https://openairdocs.org/stc/SA02149AK): Installation of GX50/60 GPS Navigator, Capstone configured MX20 Multi-Function Display and UAT transceiver. Garmin International Inc
- [STC SA01692SE](https://openairdocs.org/stc/SA01692SE): Installation of a Garmin GMX 200 Multi-Function Display. Garmin International Inc
- [STC SA03148NY](https://openairdocs.org/stc/SA03148NY): The installation of the Latitude Technologies Corporation S100 Tracking System. Latitude Technologies Corporation
- [STC SA00674WI-D](https://openairdocs.org/stc/SA00674WI-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

All 130: https://openairdocs.org/aircraft/N424MA/stcs.md

## Related

- Other Fairchild SA227-AC aircraft: https://openairdocs.org/model/fairchild-sa227-ac/aircraft.md
- The AiResearch TPE331 series engine: https://openairdocs.org/engine/airesearch-tpe331-series.md

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