# Aero Commander 685

- Type: Aircraft model (FAA registry)
- Registry code: 0141612
- Manufacturer (registry): AERO COMMANDER
- Model: 685
- Aircraft type: Fixed wing multi engine
- Category: Airplane
- Engines: 2 · Reciprocating
- Seats: 9
- Weight class: Up to 12,499 lb
- Cruise speed: 101 mph
- Certification: Type certificated
- Data sheet: [TCDS 2A4](https://openairdocs.org/tcds/2A4) (OpenAirDocs)
- Holder: Twin Commander Aircraft LLC
- Registered aircraft: 8
- Page: https://openairdocs.org/model/aero-commander-685

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023
- [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 2005-01-19](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 2000-02-30](https://openairdocs.org/ad/2000-02-30): Airframe Pneumatic Deicing Boots · Twin Commander 680, 680-E, 680-F and 15 more. Effective Mar 24, 2000
- [AD 98-20-34](https://openairdocs.org/ad/98-20-34): Airplane Flight Manuals--Severe Icing Conditions · Twin Commander 500, 500-A, 500-B and 24 more. Effective Nov 3, 1998
- [AD 98-14-03](https://openairdocs.org/ad/98-14-03): Transponders · Cessna 172, 172A, 172B and 230 more. Effective Aug 16, 1998
- [AD 98-07-17](https://openairdocs.org/ad/98-07-17): Flap System · Twin Commander 500, 500-A, 500-B and 27 more. Effective May 29, 1998
- [AD 98-08-19](https://openairdocs.org/ad/98-08-19): Wing to Fuselage Attachment Brackets and Straps · Twin Commander 500, 500-A, 500-B and 27 more. Effective May 18, 1998
- [AD 96-12-22](https://openairdocs.org/ad/96-12-22): Full Flow Engine Oil Adapter · Bellanca CH-300 Pacemaker, 120, 140 and 361 more. Effective Jul 31, 1996
- [AD 95-13-02](https://openairdocs.org/ad/95-13-02): Twin Commander 685, 690, 690A and 5 more. Effective Jul 22, 1995
- [AD 94-04-14](https://openairdocs.org/ad/94-04-14): Spar Cap · Twin Commander 500-S, 500-U, 680-FL(P) and 6 more. Effective Apr 12, 1994
- [AD 94-04-12](https://openairdocs.org/ad/94-04-12): Wing Structure · Twin Commander 685, 690, 690A and 1 more. Effective Apr 12, 1994
- [AD 87-21-07 R1](https://openairdocs.org/ad/87-21-07-R1): Fuel Filler Openings · Twin Commander 500, 500-A, 500-B and 16 more. Effective May 5, 1989
- [AD 82-23-05](https://openairdocs.org/ad/82-23-05): Induction Air Elbow · Twin Commander 685. Effective Nov 15, 1982
- [AD 79-07-02](https://openairdocs.org/ad/79-07-02): Batteries · Aircraft Parts & Development A, A-2, A-3 and 149 more. Effective Apr 3, 1979
- [AD 78-05-06](https://openairdocs.org/ad/78-05-06): Flexible Fuel Cells · Cessna 180, 182, 185 and 98 more. Effective Jun 30, 1978
- [AD 75-19-01](https://openairdocs.org/ad/75-19-01): Flap Speed · Twin Commander 685, 690 and 690A. Effective Sep 8, 1975

Historical (superseded or no longer in force):

- [AD 94-04-17](https://openairdocs.org/ad/94-04-17) (historical): Flap System Cable · Twin Commander 500, 500-A, 500-B and 27 more. Effective Apr 15, 1994

## Information bulletins (advisory) (1)

- [SAIB 2023-14](https://openairdocs.org/saib/2023-14): Landing Gear Retract/Extend System. Issued Nov 14, 2023

## Registered aircraft (8)

- [N1021](https://openairdocs.org/aircraft/N1021): [N1021 Inc](https://openairdocs.org/faa-owner/N1021%20INC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1972, S/N 12016
- [N1203N](https://openairdocs.org/aircraft/N1203N): [Bracy Rodney E](https://openairdocs.org/faa-owner/BRACY%20RODNEY%20E), [Middleville, MI](https://openairdocs.org/faa-place/MI/Middleville), built 1972, S/N 12046
- [N1525](https://openairdocs.org/aircraft/N1525): [Aviaton Business Corporation](https://openairdocs.org/faa-owner/AVIATON%20BUSINESS%20CORPORATION), [Saint Louis, MO](https://openairdocs.org/faa-place/MO/Saint%20Louis), built 1973, S/N 12022
- [N368TP](https://openairdocs.org/aircraft/N368TP): [Donohue Andrew](https://openairdocs.org/faa-owner/DONOHUE%20ANDREW), [Tulsa, OK](https://openairdocs.org/faa-place/OK/Tulsa), built 1973, S/N 12039
- [N414C](https://openairdocs.org/aircraft/N414C): [United Trading Unlimited LLC](https://openairdocs.org/faa-owner/UNITED%20TRADING%20UNLIMITED%20LLC), [Princeton, NJ](https://openairdocs.org/faa-place/NJ/Princeton), S/N 12021
- [N6517V](https://openairdocs.org/aircraft/N6517V): [Desert Flyers LLC](https://openairdocs.org/faa-owner/DESERT%20FLYERS%20LLC), [Calexico, CA](https://openairdocs.org/faa-place/CA/Calexico), built 1973, S/N 12037
- [N685LD](https://openairdocs.org/aircraft/N685LD): [Phoenixarrowcommander LLC](https://openairdocs.org/faa-owner/PHOENIXARROWCOMMANDER%20LLC), [Key West, FL](https://openairdocs.org/faa-place/FL/Key%20West), built 1973, S/N 12020
- [N750RG](https://openairdocs.org/aircraft/N750RG): [Hmcs LLC](https://openairdocs.org/faa-owner/HMCS%20LLC), [Charlotte, NC](https://openairdocs.org/faa-place/NC/Charlotte), S/N 12044

## NTSB investigations (10)

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

- [NTSB CEN13FA352](https://openairdocs.org/ntsb/CEN13FA352), Jun 15, 2013: Aero Commander 685 (N74CP), Victoria, TX, substantial damage. Probable cause: Maintenance personnel's failure to secure the left engine idler pin during overhaul, which resulted in a catastrophic engine failure and subsequent forced landing.
- [NTSB FTW00LA203](https://openairdocs.org/ntsb/FTW00LA203), Jul 8, 2000: Aero Commander 685 (N1203N), Pine Bluff, AR, substantial damage. Probable cause: the pilot's misjudged flare, which resulted in a hard landing. A contributing factor was the pilot's lack of total experience in the make and model of airplane.
- [NTSB CHI98LA283](https://openairdocs.org/ntsb/CHI98LA283), Jul 29, 1998: Aero Commander 685 (N414C), Middleton, WI, substantial damage. Probable cause: The fuel starvation of the aircraft in addition to the improper aircraft preflight and premature gear extension by the pilot-in-command. The blocked fuel vent system is a contributing factor.
- [NTSB CHI97LA011](https://openairdocs.org/ntsb/CHI97LA011), Oct 19, 1996: Aero Commander 685 (N58RG), Eden, WI, destroyed. Probable cause: a partial loss of engine power due to improper adjustment of the fuel pump by an unqualified person (pilot-in-command) and the pilot's inadequate preflight planning which resulted in his selection of…
- [NTSB CHI92LA034](https://openairdocs.org/ntsb/CHI92LA034), Nov 24, 1991: Aero Commander 685 (N9196N), Brainerd, MN, substantial damage. Probable cause: AN ENGINE FAILURE DUE TO A SEIZED FUEL PUMP ROTOR SHAFT.
- [NTSB ATL89LA121](https://openairdocs.org/ntsb/ATL89LA121), Apr 5, 1989: Aero Commander 685 (N685RB), Southern Pines, NC, substantial damage. Probable cause: THE PILOT'S IMPROPER USE OF THE MIXTURE CONTROLS WHICH RESULTED IN ENGINE ROUGHNESS AND THE FAILURE TO PROPERLY EXECUTE THE EMERGENCY PROCEDURE FOR A ROUGH ENGINE BY PLACING THE FUEL BOOST PUMP…
- [NTSB MKC88LA111](https://openairdocs.org/ntsb/MKC88LA111), Jun 16, 1988: Aero Commander 685 (N165SE), Scranton, AR, substantial damage
- [NTSB MKC81FA053](https://openairdocs.org/ntsb/MKC81FA053), Sep 4, 1981: Aero Comdr 685 (N777MM), Kansas City, KS, destroyed, 4 fatal
- [NTSB ATL81FA108](https://openairdocs.org/ntsb/ATL81FA108), Aug 14, 1981: Aero Comdr 685 (N8007H), Wrens, GA, destroyed, 5 fatal
- [NTSB SEA81FA010](https://openairdocs.org/ntsb/SEA81FA010), Dec 12, 1980: Aero Comdr 685 (N9221N), Ashland, OR, destroyed, 1 fatal

## FAA accident and incident reports (17)

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 20150416005362I](https://openairdocs.org/incident/20150416005362I), Apr 16, 2015: Aero Commander 685 (N685PB), Van Nuys, CA, Substantial damage. N685BP was at the blast fence for an engine run prior to departure. N685BP experienced right engine problems while performing an engine run up. The right…
- [Accident 20130615012669A](https://openairdocs.org/incident/20130615012669A), Jun 15, 2013: Aero Commander 685 (N74CP), Victoria, TX, Substantial damage. Aircraft departed runway 13L at Victoria Regional Airport (vct) and lost substantial power on both engines immediately after rotation. The pilot was unable to…
- [Accident 20000708004619A](https://openairdocs.org/incident/20000708004619A), Jul 8, 2000: Gulstm 685 (N1203N), Pine Bluff, AR, No damage. (-23) At approximately 10:30AM on July 8, 2000, Mr. Mashburn, piloting N1203N, a 685 commander was attempting a landing at the maunicipal airport in Pine…
- [Accident 19980729018239A](https://openairdocs.org/incident/19980729018239A), Jul 29, 1998: Gulstm 685 (N414C), Madison, WI, Substantial damage. Acft had a fuel emergency, pilot requested approach and both engines quit, acft landed a 1/2 mile short of rwy in a field. (-23) fuel exhaustion while enroute…
- [Incident 19970204002739I](https://openairdocs.org/incident/19970204002739I), Feb 4, 1997: Gulstm 685 (N685LD), Olathe, KS, Minor damage. Recipricating engine aircraft serviced with jet fuel by mistake. Pilot failed to note. Returned. Engines damaged.
- [Accident 19961019033179A](https://openairdocs.org/incident/19961019033179A), Oct 19, 1996: Gulstm 685 (N58RG), Eden, WI, Destroyed. Departed private strip, got airborne and lost power, crashed in a field. (.4)prior to takeoff from a private turf airstrip (1400'X 90'), the pilot adjusted the…
- [Incident 19960329010089I](https://openairdocs.org/incident/19960329010089I), Mar 29, 1996: Gulstm 685 (N77HC), Wichita, KS, Minor damage. Narrative: after completion of annual inspection, aircraft N77HC was returned to service on 03/29/96 by yingling aircraft, inc. (FAA repair station). Test…
- [Accident 19911123053349A](https://openairdocs.org/incident/19911123053349A), Nov 23, 1991: Gulstm 685 (N9196N), Brainerd, MN, Substantial damage. Lost power right engine on liftoff. Aborted. Lost control. Ran off runway over embankment. Fuel pump shaft sheared.
- [Incident 19890410013749I](https://openairdocs.org/incident/19890410013749I), Apr 10, 1989: Gulstm 685 (N9242N), Los Alamitos, CA. Fuel starvation on right engine. Forced landing at los alamoitos. Pilot stated fuel was stolen prior to flight.
- [Accident 19890405006199A](https://openairdocs.org/incident/19890405006199A), Apr 5, 1989: Gulstm 685 (N685RB), Southern Pines, NC, Substantial damage. Rough engines and powerloss en route. Flew thru trees on landing but made airport. Pilot used improper fuel setting
- [Accident 19880616022049A](https://openairdocs.org/incident/19880616022049A), Jun 16, 1988: Gulstm 685 (N165SE), Scranton, AR, Substantial damage. Unable to sustain flight after liftoff on a downwind takeoff. Settled and ran off runway. Possible windshear.
- [Accident 19810904055479A](https://openairdocs.org/incident/19810904055479A), Sep 4, 1981: Rkwell 685 (N777MM), Kansas City, KS, Destroyed, 3 fatal. Lost right engine on takeoff near end of runway. Called wrong engine. Was over gross. Unable to feather, crashed.
- [Accident 19810814049589A](https://openairdocs.org/incident/19810814049589A), Aug 14, 1981: Rkwell 685 (N8007H), Wrens, GA, Destroyed, 4 fatal. Pilot and passengers overcome by monoxide. Found leak in exhaust system. Induction air inlet elbow broken at weld.
- [Incident 19810630056829I](https://openairdocs.org/incident/19810630056829I), Jun 30, 1981: Rkwell 685 (N685RB), Scottsbluff, NE, Minor damage. Zr fire developed in right engine and pilot made emergency landing in field.
- [Accident 19801212088279A](https://openairdocs.org/incident/19801212088279A), Dec 12, 1980: Rkwell 685 (N9221N), Ashland, OR, Destroyed. Pilot attempted takeoff in very bad visibility conditions. Crashed right after takeoff.
- [Incident 19800601051219I](https://openairdocs.org/incident/19800601051219I), Jun 1, 1980: Rkwell 685 (N9221N), Dalhart, TX. One engine lost power after liftoff. Pilot elected to land in a grain field.
- [Incident 19791220049049I](https://openairdocs.org/incident/19791220049049I), Dec 20, 1979: Rkwell 685 (N6811S), Porterville, CA, Minor damage. Wing tip of taxiing aircraft struck wing tip of parked aircraft.

## Service difficulty reports (3)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2004FA0000361](https://openairdocs.org/sdr/2004FA0000361), Apr 29, 2004: CYLINDER. DAMAGED. NR 3 CYLINDER ON LT ENGINE HOLD DOWN STUDS BROKE OFF ON UPPER FWD AND LOWER FWD. ONLY ONE NUT WAS TIGHT ENOUGH TO USE A WRENCH. THE OTHER NUTS WERE LOOSE. AFTER
- [SDR 2004FA0000389](https://openairdocs.org/sdr/2004FA0000389), Apr 17, 2004: EXHAUST DUCT. BROKEN. IB EXHAUST ON LT ENGINE BROKE AT THE WELD BELOW NR 3 CYLINDER. BURNED HOLE IN LOWER ENGINE COWLING. BURNED WIRE BUNDLE ON THE FIREWALL AFT OF NR 1 CYLINDER. SCO
- [SDR 95ZZZX2957](https://openairdocs.org/sdr/95ZZZX2957), May 21, 1995: ENGINE. FAILED. ENG. LOST M.P. AND OIL PRESS. FOUND COMP. TURBO DAMAGE, NR 2 CYLINDER. PISTON NOT MOVING AND LIFTERS MISSING FROM HOUSINGS. THREE CYLINDERS FOUND VISIBLY CRACKE

## STCs that may be installed (OpenAirDocs) (134, first 50)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SA02571SE](https://openairdocs.org/stc/SA02571SE): Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). Garmin International Inc
- [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 SA800EA](https://openairdocs.org/stc/SA800EA): Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies. Whelen Aerospace Technologies
- [STC SA00079NY](https://openairdocs.org/stc/SA00079NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K008 on single and multi engine fixed wing light aircraft incorporating Teledyne Continental reciprocating engines of 450 horsepower or less. Airwolf Filter Corporation
- [STC SA02511SE](https://openairdocs.org/stc/SA02511SE): Installation of replacement fuel quantity indicator sending unit(s). CiES Inc
- [STC SA11300DS](https://openairdocs.org/stc/SA11300DS): Upgrade previously installed Collins Aerospace Radar Altimeter. BHE & Associates Ltd
- [STC SA8408SW](https://openairdocs.org/stc/SA8408SW): Replace the o-ring seals in the landing gear lower strut seal. Metrea Special Aerospace ISR Inc
- [STC SA02738CH](https://openairdocs.org/stc/SA02738CH): Installation of L-3 Communications Avionics Systems. Acron Aviation Inc
- [STC SA04046CH PAGE 2](https://openairdocs.org/stc/SA04046CH%20PAGE%202): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc
- [STC SA02386AK](https://openairdocs.org/stc/SA02386AK): Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems. AeroLED's Holding LLC
- [STC SA02658SE](https://openairdocs.org/stc/SA02658SE): Installation of Garmin GI 275 Multi-Function Display System. Garmin International Inc
- [STC SA02532AT](https://openairdocs.org/stc/SA02532AT): Installation of subject Michelin tires on appropriate aircraft. For Michelin 5, 6, 8, and 10-inch rim diameter tires on General Aviation Aircraft. Michelin North America Inc
- [STC SA00756DE](https://openairdocs.org/stc/SA00756DE): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT22 Transponder and an approved Global Positioning System (GPS) Position Sensor. Peregrine
- [STC SA497GL](https://openairdocs.org/stc/SA497GL): Install Aircraft Wheel and Brake conversion kit 199-80 (MIL-H-5606 system). Kaman Corporation Aircraft Wheel and Brake LLC
- [STC SA1458GL](https://openairdocs.org/stc/SA1458GL): Installation of a Cleveland nose wheel. Kaman Corporation Aircraft Wheel and Brake LLC
- [STC SA01967WI](https://openairdocs.org/stc/SA01967WI): Use of GAMI G100UL High Octane Unleaded Avgas. General Aviation Modifications Inc
- [STC SA02203AK](https://openairdocs.org/stc/SA02203AK): Installation of FlightLogic Synthetic Vision Electronic Flight Information System (EFIS-SV). Genesys Aerosystems Inc
- [STC SA02254AK](https://openairdocs.org/stc/SA02254AK): Installation of "Single Screen", "2 or 3 Screen", "Dual Screen", or "4 or 6 screen". Genesys Aerosystems Inc
- [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC
- [STC SA09856AC](https://openairdocs.org/stc/SA09856AC): Installation of BendixKing Aerowave 100 In-flight Data Link System for non-essential, non-required aircraft Cabin Systems & Equipments. Honeywell International Inc (Bendix King)
- [STC SA11174SC PAGE 2](https://openairdocs.org/stc/SA11174SC%20PAGE%202): Installation of BendixKing by Honeywell KSN 770 and KSN 765 WAAS LPV approach capable nav/comm systems. Honeywell International Inc (Bendix King)
- [STC SA02265SE](https://openairdocs.org/stc/SA02265SE): Installation of a camera housing. Airborne Sensor LLC
- [STC SA02426AK](https://openairdocs.org/stc/SA02426AK): Approval of the FreeFlight FDL-978-TX ADS-B system installed. FreeFlight Systems
- [STC SA09763DS](https://openairdocs.org/stc/SA09763DS): Installation of an S-TEC 01326 Digital Flight Control System (DFCS). S-TEC Corporation
- [STC SA10236SC](https://openairdocs.org/stc/SA10236SC): Installation of a GDC 31 Roll Steering Converter. DAC International Inc
- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation
- [STC SA01452CH](https://openairdocs.org/stc/SA01452CH): Installation of an air ambulance conversion kit. Med-Pac Inc
- [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 SA00344BO PAGE 2](https://openairdocs.org/stc/SA00344BO%20PAGE%202): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies
- [STC SA615EA](https://openairdocs.org/stc/SA615EA): Installation of a Whelen Anti-Collision Strobe Light System as replacement for originally installed anti-collision lights. Whelen Aerospace Technologies
- [STC SA00098SE](https://openairdocs.org/stc/SA00098SE): Installation of emergency medical stretcher, oxygen, and electrical systems. LifePort LLC
- [STC SA00744DE](https://openairdocs.org/stc/SA00744DE): Installation of the Automatic Dependent Surveillance Broadcast (ADS-B) Out Equipment using a Trig Avionics TT31 Transponder and an approved position sensor. Peregrine
- [STC SA00765DE](https://openairdocs.org/stc/SA00765DE): Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensor. Peregrine
- [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 SA02503AK](https://openairdocs.org/stc/SA02503AK): Installation of AMSAFE State of the Art Restraint System (SOARS) inflatable restraints. AMSAFE Inc
- [STC SA02013CH](https://openairdocs.org/stc/SA02013CH): Installation of Avidyne Corporation Traffic Advisory System (TAS). Avidyne Corporation
- [STC SA01828SE](https://openairdocs.org/stc/SA01828SE): Installation of J.P. Instruments (JPI) EDM-960 Primary Engine Data Management System. J. P. Instruments
- [STC SA01835WI](https://openairdocs.org/stc/SA01835WI): Installation of Trig Avionics TY-96 or TY-97 VHF Communications Radio. Peregrine
- [STC SA01933LA-D](https://openairdocs.org/stc/SA01933LA-D): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin International Inc
- [STC SA02212AK](https://openairdocs.org/stc/SA02212AK): Replacement of existing landing and/or taxi light reflector and bulbs with high intensity discharge (HID) lighting systems. Seaplanes North LLC
- [STC SA2586NM](https://openairdocs.org/stc/SA2586NM): Installation of J.P. Instruments temperature monitoring systems. J P Instruments
- [STC SA00382BO](https://openairdocs.org/stc/SA00382BO): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes. Avidyne Corporation
- [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 2](https://openairdocs.org/stc/SA00352BO%20PAGE%202): 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 SA1177GL](https://openairdocs.org/stc/SA1177GL): Install Aero Medical Products Mfg., Inc. Air Ambulance Stretcher P/N 125 using Installation Kit P/N 800 in accordance with Installation and Operating Instructions, Form EA 109K, dated April 23, 2001, or later FAA approved revisions. The Medical Oxygen System Kit P/N 807 is an FAA approved option. The Inverter/Pump Kit No. 812 may be installed in accordance with Inverter/Pump Installation Instructions, EA Form 170, dated June 9, 2001, or later FAA approved revisions. Paul/ Lanna Egan LLC
- [STC SA00149BO](https://openairdocs.org/stc/SA00149BO): Installation of Aircraft Components, Inc. Volt and Vac Alert System, P/N 2044-1. Aircraft Components Inc

All 134: https://openairdocs.org/model/aero-commander-685/stcs.md

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Rockwell International 685](https://openairdocs.org/model/rockwell-international-685): 0 registered aircraft, registry code 7630513

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