# N385MQ: Short Bros SD3-60

- Status: Valid registration
- Airframe: [Short Bros SD3-60](https://openairdocs.org/model/short-bros-sd3-60) (registry code 8100606, 39 seats)
- Engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52034)
- Serial number: SH3707
- Type: Fixed wing multi engine
- Engine type: Turbo-prop
- Airworthiness: Standard, transport
- Airworthiness date: December 23, 1986
- Certificate issued: November 7, 2016
- Expires: November 30, 2029
- Mode S code: A46EFF
- Registered owner: [Acc Integrated Services Inc](https://openairdocs.org/faa-owner/ACC%20INTEGRATED%20SERVICES%20INC)
- Location: [Milwaukee, WI](https://openairdocs.org/faa-place/WI/Milwaukee)
- Owner type: Corporation
- Owner's area on the map: 42.9751° N, 87.8989° W: Placed by OpenAirDocs at the center of ZIP code 53207, 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=385MQ
- Page: https://openairdocs.org/aircraft/N385MQ

From the FAA registry file of October 21, 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): 95 in force

### Matched by airframe (Short Bros SD3-60)

- [AD 2015-16-04](https://openairdocs.org/ad/2015-16-04): Fire Protection · Airbus Defense and Space C-212-CB, C-212-CC, C-212-CD and 23 more. Effective Sep 15, 2015
- [AD 2010-24-06](https://openairdocs.org/ad/2010-24-06): Fuel · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Feb 16, 2011
- [AD 2008-16-09 R1](https://openairdocs.org/ad/2008-16-09-R1): Stabilizers · Short Brothers SD3-60. Effective Sep 16, 2009
- [AD 2008-12-08](https://openairdocs.org/ad/2008-12-08): Auxiliary fuel tank systems · Short Brothers SD3-60 with STC SA00404AT. Effective Jul 15, 2008
- [AD 2007-08-09](https://openairdocs.org/ad/2007-08-09): Cable operated control system · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective May 8, 2007
- [AD 2006-03-05](https://openairdocs.org/ad/2006-03-05): Main landing gear (MLG) · Short Brothers SD3-60, SD3-60 SHERPA and SD3-SHERPA. Effective Mar 14, 2006
- [AD 2005-19-18](https://openairdocs.org/ad/2005-19-18): Fire extinguisher adapter assemblies · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Oct 26, 2005
- [AD 2005-17-13](https://openairdocs.org/ad/2005-17-13): Rudder horn spar · Short Brothers SD3-60. Effective Sep 12, 2005
- [AD 2005-13-31](https://openairdocs.org/ad/2005-13-31): Vertical stabilizer · Short Brothers SD3-60. Effective Aug 2, 2005
- [AD 2004-25-13](https://openairdocs.org/ad/2004-25-13): Gland Nut on Shock Absorber of Main Landing Gear (MLG) · Short Brothers SD3-60, SD3-60 SHERPA and SD3-SHERPA. Effective Jan 20, 2005
- [AD 2004-16-04](https://openairdocs.org/ad/2004-16-04): Aft Pintle Pin Bushing of the Main Landing Gear (MLG) · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Sep 14, 2004
- [AD 2004-16-02](https://openairdocs.org/ad/2004-16-02): Warning Annunciator Light on the Central Warning Panel · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Sep 14, 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 2002-03-13](https://openairdocs.org/ad/2002-03-13): Wiring Harness and Power Cables of the Heated Windshield · Short Brothers SD3-60, SD3-60 SHERPA and SD3-SHERPA. Effective Mar 27, 2002
- [AD 2002-01-22](https://openairdocs.org/ad/2002-01-22): Elevator Torque Shaft Assembly · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Mar 7, 2002
- [AD 2001-24-09](https://openairdocs.org/ad/2001-24-09): Engine Power Lever · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Jan 7, 2002
- [AD 2001-22-05](https://openairdocs.org/ad/2001-22-05): Hydraulic Lines and Adjacent Wiring · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Dec 4, 2001
- [AD 2001-02-08](https://openairdocs.org/ad/2001-02-08): Pneumatic De-icing Boot Indicator Switch · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Feb 20, 2001
- [AD 2000-14-09](https://openairdocs.org/ad/2000-14-09): Ditching Hatch · Short Brothers SD3-60. Effective Aug 23, 2000
- [AD 99-19-20](https://openairdocs.org/ad/99-19-20): AFM - Limitations Section - Ice Protection System · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Dec 27, 1999
- [AD 99-22-05](https://openairdocs.org/ad/99-22-05): Elevator Trim Cable · Short Brothers SD3-60. Effective Nov 26, 1999
- [AD 99-21-22](https://openairdocs.org/ad/99-21-22): Corrosion Of Stub Wing Shear Decks And Ribs · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Nov 17, 1999
- [AD 99-21-02](https://openairdocs.org/ad/99-21-02): Engine Mounting Tube Assembly · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Nov 5, 1999
- [AD 99-18-11](https://openairdocs.org/ad/99-18-11): Bolts of Elevator Control Torque Tube Bearing Housing Retaining Plate · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Oct 6, 1999
- [AD 99-18-10](https://openairdocs.org/ad/99-18-10): Emergency Brake Accumulator Mounting Angle · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Oct 5, 1999
- [AD 99-06-07](https://openairdocs.org/ad/99-06-07): Top and Bottom Shear Decks Of Stub Wings · Short Brothers SD3-60 and SD3-60 SHERPA. Effective Apr 16, 1999
- [AD 98-21-05](https://openairdocs.org/ad/98-21-05): Levers And Bracket Assy Of Inner Flap Sub-Assy · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Nov 10, 1998
- [AD 98-11-24](https://openairdocs.org/ad/98-11-24): AFM - Limitations Section - Power Levers · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Jul 6, 1998
- [AD 98-11-22](https://openairdocs.org/ad/98-11-22): Inspect Diode Mounting Assemblies · Short Brothers SD3-60. Effective Jul 6, 1998
- [AD 96-21-07](https://openairdocs.org/ad/96-21-07): Inspect Brackets Of Flap Hydraulic Units · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Nov 29, 1996
- [AD 96-09-27](https://openairdocs.org/ad/96-09-27): AFM - Icing · Short Brothers SD3-30, SD3-60 and SD3-SHERPA. Effective Jun 11, 1996
- [AD 94-24-05](https://openairdocs.org/ad/94-24-05): Time Delay Relay · Short Brothers SD3-60. Effective Jan 4, 1995
- [AD 94-06-02](https://openairdocs.org/ad/94-06-02): Wing Strut · Short Brothers SD3-30, SD3-60 and SD3-SHERPA. Effective May 16, 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 94-01-04](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 93-24-16](https://openairdocs.org/ad/93-24-16): Protective Breathing Equipment · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 149 more. Effective Feb 4, 1994
- [AD 93-25-11](https://openairdocs.org/ad/93-25-11): Horizontal Stabilizers · Short Brothers SD3-60. Effective Jan 26, 1994
- [AD 93-16-05](https://openairdocs.org/ad/93-16-05): Horizontal Stabilizer Attachment Lugs · Short Brothers SD3-60. Effective Oct 4, 1993
- [AD 93-13-06](https://openairdocs.org/ad/93-13-06): MLG Actuator · Short Brothers SD3-60. Effective Aug 18, 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 93-01-12](https://openairdocs.org/ad/93-01-12): Emergency Lights · Short Brothers SD3-60. Effective Mar 2, 1993
- [AD 92-27-17](https://openairdocs.org/ad/92-27-17): Inadvertent Engine Shutdown · Short Brothers SD3-30 and SD3-60. Effective Feb 25, 1993
- [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 92-02-16](https://openairdocs.org/ad/92-02-16): Rudder Torque Tube Fitting · Short Brothers SD3-60. Effective Mar 9, 1992
- [AD 91-18-13](https://openairdocs.org/ad/91-18-13): Pitot/Static Heaters · Short Brothers SD3-30 and SD3-60. Effective Oct 16, 1991
- [AD 91-11-11](https://openairdocs.org/ad/91-11-11): Spool Spindle · Short Brothers SD3-60. Effective Jul 1, 1991
- [AD 90-15-07](https://openairdocs.org/ad/90-15-07): Air Conditioning System · Short Brothers SD3-60 with STC SA3749SW. Effective Jul 31, 1990
- [AD 90-14-09](https://openairdocs.org/ad/90-14-09): Wing/Strut Attachment Fittings · Short Brothers SD3-60. Effective Jul 23, 1990
- [AD 89-02-11](https://openairdocs.org/ad/89-02-11): Engine Power Control Cables · Short Brothers SD3-60. Effective Feb 17, 1989
- [AD 88-01-10 R1](https://openairdocs.org/ad/88-01-10-R1): Horizontal Stabilizer Bushings · Short Brothers SD3-60. Effective Oct 10, 1988

### 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 2008-16-09](https://openairdocs.org/ad/2008-16-09) (historical): Balance weight brackets · Short Brothers SD3-60. Effective Sep 15, 2008
- [AD 2006-12-18](https://openairdocs.org/ad/2006-12-18) (historical): Fuel tank · Short Brothers SD3-30, SD3-60, SD3-60 SHERPA and 1 more. Effective Jul 21, 2006
- [AD 2005-04-13](https://openairdocs.org/ad/2005-04-13) (historical): Elevator trim tabs · Short Brothers SD3-60. Effective Mar 14, 2005
- [AD 2004-13-08](https://openairdocs.org/ad/2004-13-08) (historical): Balance weight brackets for the left and right elevator trim tabs · Short Brothers SD3-60. Effective Aug 3, 2004
- [AD 98-09-28](https://openairdocs.org/ad/98-09-28) (historical): Cover On Fire Extinguisher Adapter Assembly · Short Brothers SD 3-30, SD3-60 and SD3-60 SHERPA. Effective Jun 8, 1998
- [AD 96-22-09](https://openairdocs.org/ad/96-22-09) (historical): MLG Shock Absorber Gland Nut · Short Brothers SD3-60, SD3-60 SHERPA and SD3-SHERPA. Effective Dec 11, 1996
- [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 93-02-03](https://openairdocs.org/ad/93-02-03) (historical): MLG Inspection · Short Brothers SD3-60 and SD3-60 SHERPA. Effective Mar 18, 1993
- [AD 87-16-02](https://openairdocs.org/ad/87-16-02) (historical): Propeller Blade Pilot Tube Bore · Hartzell Propeller HC-B5MP-3 and SD3-60
- [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 106: https://openairdocs.org/aircraft/N385MQ/ads.md

## Information bulletins (advisory) (6 in force)

- [SAIB NM-09-03](https://openairdocs.org/saib/NM-09-03): Engine Fuel and Control - Implementing Fuel Tank System Airworthiness Limitations. Issued Dec 11, 2008
- [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 (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI91LA103](https://openairdocs.org/ntsb/CHI91LA103), Mar 2, 1991: Short Brothers SD3-60 (N385MQ), Chicago, IL, substantial damage. Probable cause: AN EXCESSIVE LANDING FLARE BY THE COPILOT. FACTORS ASSOCIATED WITH THE ACCIDENT ARE THE INOPERATIVE WING FLAPS AND THE CAPTAIN'S INADEQUATE SUPERVISON.

## FAA accident and incident reports (2)

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

- [Incident 19920910042709I](https://openairdocs.org/incident/19920910042709I), Sep 10, 1992: Stbros SD360 (N385MQ), Raleigh-Durham, NC. Left engine shut down on final approach. Landed safely. Found P3 line cracked.
- [Accident 19910302005719A](https://openairdocs.org/incident/19910302005719A), Mar 2, 1991: Stbros SD360 (N385MQ), Chicago, IL, Substantial damage. Tail strike on landing. Ice on airframe. Reported flaps inop. Recorder shows flaps extended then retracted.

## Service difficulty reports (3)

As reported by operators and repair stations.

- [SDR DATA2018120300001](https://openairdocs.org/sdr/DATA2018120300001), Nov 29, 2018: GOVERNOR. FAILED. CREW EXPERIENCED ENGINE FAILURE SHORTLY AFTER DEPARTING SDQ. THE FAILURE OCCURRED APPROXIMATELY 40 MILES WEST OF SDQ. AFTER ANALYZING THE PROBLEM THE CREW HANDL
- [SDR DATA2018053101](https://openairdocs.org/sdr/DATA2018053101), May 31, 2018: INDICATOR. FAULTY. AFTER DEPARTURE, LEVELED OFF AT 7500. LEFT ENGINE RPM STARTED TO DECREASE. TORQUE, NG AND ITT REMAINED STEADY. PERFORMED A PRECAUTIONARY SHUTDOWN AND SECURED TH
- [SDR 96ZZZM1284](https://openairdocs.org/sdr/96ZZZM1284), May 19, 1996: SWITCH. FAILED. RIGHT MAIN LANDING GEAR HAD FAULTY DOWN AND LOCK INDICATION. AFTER RECYCLING GEARS MANY TIMES, CAPTAIN DECLARES EMERGENCY AND LANDED WITH NO INCIDENTS. ADJUSTED

## Related

- Other Short Bros SD3-60 aircraft: https://openairdocs.org/model/short-bros-sd3-60/aircraft.md
- STCs for the Short Bros SD3-60: https://openairdocs.org/model/short-bros-sd3-60/stcs.md
- The Pratt & Whitney PT6A series engine: https://openairdocs.org/engine/pratt-whitney-pt6a-series.md

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