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Type Record · As of May 3, 2026

AERO COMMANDER 685

Fixed Wing Multi Engine · CONT MOTOR GTSIO-520-C

Registered

9

Year Range

1972–1973

NTSB Events

3

Airworthiness Directives

15

Aircraft Resources

Engine · Continental Aerospace Technologies → Search FAA TCDS →

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered AERO COMMANDER 685 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

By State (top 10)

  • OK 22.2% 2
  • DE 11.1% 1
  • MI 11.1% 1
  • MO 11.1% 1
  • NJ 11.1% 1
  • CA 11.1% 1
  • FL 11.1% 1
  • NC 11.1% 1

By Decade of Manufacture

  • 1970s 66.7% 6
  • Unknown 33.3% 3

02 /  NTSB Records

Events involving AERO COMMANDER 685 aircraft

3 event(s) on file. Showing the most recent 3.

02b /  NASA ASRS Reports

Near-miss reports involving AERO COMMANDER 685

NASA's voluntary, confidential reporting system surfaces what almost went wrong. 3 de-identified ASRS reports reference this airframe. Pilot-written narrative. ASRS reports are voluntary and not investigated — they represent the reporter's perspective and cannot infer prevalence.

03 /  Airworthiness Directives

FAA directives applicable to AERO COMMANDER 685

15 directive(s) on file. Showing the most recent 15.

  • Jun 12, 2023

    Airworthiness Directives; Various Airplanes, Helicopters, and Engines

    The FAA is adopting a new airworthiness directive (AD) for turbocharged, reciprocating engine-powered airplanes and helicopters and turbocharged, reciprocating engines with a certain v-band coupling installed. This AD was prompted by multiple failures of spot-welded, multi-segment v-band couplings at the tailpipe to t…

    Atlas AD → Federal Register ↗

  • Dec 26, 2007

    Airworthiness Directives; Hartzell Propeller Inc. Compact Series Propellers

    The FAA is superseding an existing airworthiness directive (AD) for all Hartzell Propeller Inc. models ( )HC-( )( )Y( )-( )( )( ) compact series, constant speed or feathering propellers with Hartzell manufactured "Y" shank aluminum blades. That AD currently requires initial blade inspections, with no repetitive inspec…

    Atlas AD → Federal Register ↗

  • Mar 12, 2007

    Airworthiness Directives; Teledyne Continental Motors GTSIO-520 Series Reciprocating Engines

    The FAA is superseding an existing airworthiness directive (AD) for Teledyne Continental Motors (TCM) GTSIO-520 series reciprocating engines. That AD currently requires initial and repetitive visual inspections of the starter adapter assembly and crankshaft gear and unscheduled visual inspections of the starter adapte…

    Atlas AD → Federal Register ↗

  • Oct 26, 2006

    Airworthiness Directives; Teledyne Continental Motors GTSIO-520 Series Reciprocating Engines

    The FAA proposes to supersede an existing airworthiness directive (AD) for Teledyne Continental Motors (TCM) GTSIO-520 series reciprocating engines. That AD currently requires initial and repetitive visual inspections of the starter adapter assembly and crankshaft gear and unscheduled visual inspections of the starter…

    Atlas AD → Federal Register ↗

  • Aug 14, 2006

    Airworthiness Directives; Hartzell Propeller Inc. Compact Series Propellers

    The FAA proposes to supersede an existing airworthiness directive (AD) for Hartzell Propeller Inc. models ( )HC-( )( )Y( )-( )( )( ) compact series, constant speed or feathering propellers with Hartzell manufactured "Y" shank aluminum blades. That AD currently requires initial blade inspections, with no repetitive ins…

    Atlas AD → Federal Register ↗

  • Sep 27, 2005

    Airworthiness Directives; Teledyne Continental Motors GTSIO-520 Series Reciprocating Engines

    The FAA is adopting a new airworthiness directive (AD) for Teledyne Continental Motors (TCM) GTSIO-520 series reciprocating engines. This AD requires initial and repetitive visual inspections of the starter adapter assembly and crankshaft gear. This AD also requires unscheduled visual inspections of the starter adapte…

    Atlas AD → Federal Register ↗

  • Apr 6, 2005

    Airworthiness Directives; Teledyne Continental Motors GTSIO-520 Series Reciprocating Engines

    The FAA proposes to adopt a new airworthiness directive (AD) for Teledyne Continental Motors (TCM) GTSIO-520 series reciprocating engines. This proposed AD would require initial and repetitive visual inspections of the starter adapter assembly and crankshaft gear. This proposed AD would also require unscheduled visual…

    Atlas AD → Federal Register ↗

  • Jan 19, 2005

    Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

    The FAA is adopting a new airworthiness directive (AD) to supersede Airworthiness Directive 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD a…

    Atlas AD → Federal Register ↗

  • Oct 7, 2004

    Airworthiness Directives; GARMIN International Inc. GTX 33, GTX 33D, GTX 330, and GTX 330D Mode S Transponders

    The FAA proposes to supersede Airworthiness Directive (AD) 2004-10-15, which applies to certain GTX 330 and GTX 330D Mode S transponders that are installed on airplanes. AD 2004-10-15 currently requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This proposed AD applies to certain GTX 33…

    Atlas AD → Federal Register ↗

  • May 21, 2004

    Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

    The FAA adopts a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders that are installed on aircraft. This AD requires you to install GTX 330/330D Software Upgrade Version 3.03, 3.04, or 3.05. This AD is the result of observations that the GTX 330 and GTX 330D may…

    Atlas AD → Federal Register ↗

  • Apr 20, 2004

    Airworthiness Directives; Engine Components Incorporated (ECi) Reciprocating Engine Cylinders

    The FAA is adopting a new airworthiness directive (AD) for Teledyne Continental Motors (TCM) models 520 and 550 series engines with certain ECi cylinders installed. This AD requires replacing certain serial-numbered (SN) cylinders supplied by ECi before further flight. This AD results from reports of 34 failures of cy…

    Atlas AD → Federal Register ↗

  • Dec 30, 2003

    Airworthiness Directives; GARMIN International Inc. GTX 330 Mode S Transponders and GTX 330D Diversity Mode S Transponders

    The FAA proposes to adopt a new airworthiness directive (AD) for certain GARMIN International Inc. GTX 330/GTX 330D Mode S transponders. This proposed AD would require you to install GTX 330/ 330D Software Upgrade Version 3.03. This proposed AD is the result of observations that the GTX 330 and GTX 330D may detect, fr…

    Atlas AD → Federal Register ↗

  • May 9, 2002

    Airworthiness Directives; Hartzell Propeller, Inc. Compact Series Propellers

    This amendment supersedes an existing airworthiness directive (AD), that is applicable to Hartzell models ( )HC-( )( )Y( )-( )( )( ) compact series, constant speed or feathering propellers with Hartzell manufactured "Y" shank blades. That AD currently requires initial and repetitive blade inspections; rework of all "Y…

    Atlas AD → Federal Register ↗

  • Nov 20, 2001

    Airworthiness Directives; Hartzell Propeller, Inc. Compact Series Propellers

    The Federal Aviation Administration (FAA) proposes to supersede an existing airworthiness directive (AD) that is applicable to Hartzell models ( )HC-( )( )Y( )-( )( )( ) compact series, constant speed or feathering propellers with Hartzell manufactured "Y" shank blades. That AD currently requires initial and repetitiv…

    Atlas AD → Federal Register ↗

  • Jun 17, 1996

    Airworthiness Directives; Cessna Aircraft Company Engine Oil Filter Adapter Assemblies Installed on Aircraft

    This amendment adopts a new airworthiness directive (AD) that applies to Cessna Aircraft Company (Cessna) engine oil filter adapter assemblies installed on aircraft. This action requires inspecting the oil filter and adapter assembly (or torque putty, if installed) for oil leakage and proper installation of the adapte…

    Atlas AD → Federal Register ↗

04 /  Type Certificate Data Sheets

FAA TCDS for AERO COMMANDER 685

The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.

  • 2A4 Current Rev 50 · 11/18/2024

    Twin Commander Aircraft LLC

    Models: 680-V, 680-F(P), 680-F, 680-E + 17 more

    Atlas TCDS → DRS ↗

06 /  Supplemental Type Certificates

Modifications approved for AERO COMMANDER 685

67 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

  • 08/27/2024

    STC SA04837NY

    Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights

    AeroLED's Holdings, LLC

    Atlas STC → DRS ↗

  • 08/27/2024

    STC SA02386AK

    Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems

    AeroLED's Holding LLC

    Atlas STC → DRS ↗

  • 06/13/2024

    STC SA02511SE (1 OF 3)

    Installation of replacement fuel quantity indicator sending unit(s)

    CiES Inc.

    Atlas STC → DRS ↗

  • 06/13/2024

    STC SA02511SE (1 OF 2)

    Installation of replacement fuel quantity indicator sending unit(s)

    CiES Inc.

    Atlas STC → DRS ↗

  • 02/02/2024

    STC SA02658SE (1 OF 2)

    Installation of Garmin GI 275 Multi-Function Display System

    Garmin International Inc.

    Atlas STC → DRS ↗

  • 11/16/2023

    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.

    Atlas STC → DRS ↗

  • 04/05/2023

    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 Se…

    Peregrine

    Atlas STC → DRS ↗

  • 07/21/2021

    STC SA02265SE

    Installation of a camera housing

    Airborne Sensor LLC

    Atlas STC → DRS ↗

  • 06/14/2021

    STC SA02658SE (1 OF 2)

    Installation of Garmin GI 275 Multi-Function Display System

    Garmin International Inc

    Atlas STC → DRS ↗

  • 03/30/2021

    STC SA02386AK

    Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems

    Aero LEDs LLC

    Atlas STC → DRS ↗

  • 01/12/2021

    STC SA02426AK

    Approval of the FreeFlight FDL-978-TX ADS-B system installed

    FreeFlight Systems

    Atlas STC → DRS ↗

  • 10/29/2020

    STC SA02511SE (1 OF 3)

    Installation of replacement fuel quantity indicator sending unit(s)

    CiES Inc.

    Atlas STC → DRS ↗

  • 01/13/2020

    STC SA02658SE (1 OF 2)

    Installation of Garmin GI 275 Multi-Function Display System

    Garmin International Inc

    Atlas STC → DRS ↗

  • 09/09/2019

    STC SA01714WI (1 OF 2)

    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 wit…

    Garmin International Inc

    Atlas STC → DRS ↗

  • 07/24/2019

    STC SA02511SE (1 OF 2)

    Installation of replacement fuel quantity indicator sending unit(s)

    CiES Inc.

    Atlas STC → DRS ↗

  • 06/19/2019

    STC SA800EA

    Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies

    Whelen Aerospace Technologies

    Atlas STC → DRS ↗

  • 02/13/2019

    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 Se…

    Peregrine

    Atlas STC → DRS ↗

  • 12/19/2018

    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

    Atlas STC → DRS ↗

  • 12/19/2018

    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 Se…

    Peregrine

    Atlas STC → DRS ↗

  • 12/19/2018

    STC SA00765DE

    Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensor

    Peregrine

    Atlas STC → DRS ↗

  • 07/12/2018

    STC SA02503AK (Page 2)

    Installation of AMSAFE State of the Art Restraint System (SOARS) inflatable restraints

    AMSAFE Inc.

    Atlas STC → DRS ↗

  • 04/11/2018

    STC SA01835WI

    Installation of Trig Avionics TY-96 or TY-97 VHF Communications Radio

    Peregrine

    Atlas STC → DRS ↗

  • 04/02/2018

    STC SA800EA

    Installation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power supplies

    Whelen Engineering Co Inc

    Atlas STC → DRS ↗

  • 02/28/2018

    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

    Atlas STC → DRS ↗

  • 12/01/2017

    STC SA00765DE

    Installation of Automatic Dependent Surveillance Broadcast (ADS-B) Out functionality using the BendixKing KT74 Transponder and qualified position sensor

    Peregrine

    Atlas STC → DRS ↗

  • 09/20/2017

    STC SA2586NM

    Installation of J.P. Instruments temperature monitoring systems.

    J P Instruments

    Atlas STC → DRS ↗

  • 05/01/2017

    STC SA02265SE

    Installation of a camera housing

    Airborne Sensor LLC

    Atlas STC → DRS ↗

  • 04/17/2017

    STC SA01835WI

    Installation of Trig Avionics TY-96 or TY-97 VHF Communications Radio

    Peregrine

    Atlas STC → DRS ↗

  • 09/27/2016

    STC SA02386AK

    Replacement of existing landing and/or taxi light reflector and bulbs with Light Emitting Diode (LED) lighting systems

    Aero LEDs LLC

    Atlas STC → DRS ↗

  • 02/29/2016

    STC SA00149BO

    Installation of Aircraft Components, Inc. Volt and Vac Alert System, P/N 2044-1

    Aircraft Components Inc

    Atlas STC → DRS ↗

+ 37 more STCs on file

07 /  PMA replacement parts

FAA-approved replacement parts for AERO COMMANDER 685

21 parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.

  • 90-935#https://drs.faa.gov/browse/excelExternalWindow/7477F4359DE63760862583E1005D3F26.0001##

    Seal, Door

    B/E Aerospace Inc, DBA, SMR Technologies Inc replaces 90-935

    PMA holder →

  • SMR1967-2#https://drs.faa.gov/browse/excelExternalWindow/DB936D9BA2B9EF9D8625782300590297.0001##

    Wire Harness

    B/E Aerospace Inc, DBA, SMR Technologies Inc replaces Goodrich 4E1967-2

    PMA holder →

  • SYLZ-50241#https://drs.faa.gov/browse/excelExternalWindow/E879422EC0C637EF8525704C00570BFB.0001##

    Box, Control Assembly

    GE Aviation Systems LLC replaces SYLZ-50241

    PMA holder →

  • SYLZ-50242#https://drs.faa.gov/browse/excelExternalWindow/0FC6F85F1171A7A28525704C00570BFC.0001##

    Control Box Cabin Air Temperature Control

    GE Aviation Systems LLC replaces SYLZ-50242

    PMA holder →

  • 5333-032#https://drs.faa.gov/browse/excelExternalWindow/7038943C1911D0D7862572F1005504D8.0001##

    Rod End-Assy. Speed Trimming

    ONTIC Engineering & Manufacturing Inc replaces Modification Part

    PMA holder →

  • 1551-036#https://drs.faa.gov/browse/excelExternalWindow/6F979507D5AA873D862572F10054FED4.0001##

    Shaft-Flexible

    ONTIC Engineering & Manufacturing Inc replaces Modification Part

    PMA holder →

  • 5333-032#https://drs.faa.gov/browse/excelExternalWindow/C5BFD5CDA3D5F0E986257138005A129D.0001##

    Rod End-Assembly. Speed Trimming

    ONTIC Engineering & Manufacturing Inc replaces Modification Part

    PMA holder →

  • 1551-036#https://drs.faa.gov/browse/excelExternalWindow/003C628B934CCBC786257138005A0C6B.0001##

    Shaft-Flexible

    ONTIC Engineering & Manufacturing Inc replaces Modification Part

    PMA holder →

  • 5333-032#https://drs.faa.gov/browse/excelExternalWindow/49A1EEFD599AC4968625712D0054DBFE.0001##

    Rod End-Assy. Speed Trimming

    ONTIC Engineering & Manufacturing Inc replaces Modification Part

    PMA holder →

  • 1551-036#https://drs.faa.gov/browse/excelExternalWindow/2B10C3DBED53709A8625712D0054D3C5.0001##

    Shaft-Flexible

    ONTIC Engineering & Manufacturing Inc replaces Modification Part

    PMA holder →

  • SMR5015-05#https://drs.faa.gov/browse/excelExternalWindow/03E66EF95683EACB862571B900603DDB.0001##

    Pneumatic De-Icer Boot

    B/E Aerospace Inc, DBA, SMR Technologies Inc replaces Goodrich P/N 25S-7D5015-05

    PMA holder →

  • SMR5015-03#https://drs.faa.gov/browse/excelExternalWindow/E61E53A776887AF0862571B900603D7A.0001##

    Pneumatic De-Icer Boot

    B/E Aerospace Inc, DBA, SMR Technologies Inc replaces Goodrich P/N 25S-7D5015-03

    PMA holder →

  • SMR5015-04#https://drs.faa.gov/browse/excelExternalWindow/FFE81846B43E9DE2862571B900603DA7.0001##

    Pneumatic De-Icer Boot

    B/E Aerospace Inc, DBA, SMR Technologies Inc replaces Goodrich P/N 25S-7D5015-04

    PMA holder →

  • SMR5015-01#https://drs.faa.gov/browse/excelExternalWindow/EA1F8079098E7DAE862571B900603D11.0001##

    Pneumatic De-Icer Boot

    B/E Aerospace Inc, DBA, SMR Technologies Inc replaces Goodrich P/N 25S-7D5015-01

    PMA holder →

  • SMR5015-02#https://drs.faa.gov/browse/excelExternalWindow/0CC329F3877A987A862571B900603D45.0001##

    Pneumatic De-Icer Boot

    B/E Aerospace Inc, DBA, SMR Technologies Inc replaces Goodrich P/N 25S-7D5015-02

    PMA holder →

  • 213685#https://drs.faa.gov/browse/excelExternalWindow/133BF39BC518826E862573CB00664230.0001##

    SYNCHRONIZER KIT

    Woodward Inc replaces -

    PMA holder →

  • YL 1596#https://drs.faa.gov/browse/excelExternalWindow/E431D074DEF7D1F2862574F7005CD8FE.0001##

    Schematic Diagram Cabin Temperature Control, Electronic

    GE Aviation Systems LLC replaces -

    PMA holder →

  • SYLZ 50242#https://drs.faa.gov/browse/excelExternalWindow/A0828F82F80EB067862574F7005CD8E7.0001##

    Control, Box Cabin Air Temperature Control

    GE Aviation Systems LLC replaces -

    PMA holder →

  • YL 1595#https://drs.faa.gov/browse/excelExternalWindow/73F75314612C0873862574F7005CD8C7.0001##

    Diagram, Schematic

    GE Aviation Systems LLC replaces -

    PMA holder →

  • SYLZ 50241#https://drs.faa.gov/browse/excelExternalWindow/5175982BD54C6981862574F7005CD8A7.0001##

    Box Control Assembly

    GE Aviation Systems LLC replaces -

    PMA holder →

  • 210713#https://drs.faa.gov/browse/excelExternalWindow/D629BD72FFD0CA46862572F10054C19E.0001##

    Governor - Assy. CSSA

    ONTIC Engineering & Manufacturing Inc replaces 210713

    PMA holder →

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for AERO COMMANDER 685

05 /  Aircraft of this type

All 9 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.

9 of 9
N-number St Year NTSB FAA
N1021 DE 1972 ● Look up ↗
N1203N MI 1972 ● Look up ↗
N1525 MO 1973 · Look up ↗
N368TP OK 1973 · Look up ↗
N414C NJ — ● Look up ↗
N6517V CA 1973 · Look up ↗
N685LD FL 1973 · Look up ↗
N750RG NC — · Look up ↗
N813GB OK — · Look up ↗

Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)

05 /  Sources & Methodology

Every count traces back to a primary US-government source

We render counts and lists as the agency publishes them. Read the methodology →