Fixed Wing Multi Engine · CONT MOTOR IO 520 SERIES · as of Sep 21, 2026
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Distribution · currently registered
By state (top 10)
- FL 14.3% 4
- DE 10.7% 3
- TX 10.7% 3
- WA 7.1% 2
- AZ 7.1% 2
- CA 3.6% 1
- KY 3.6% 1
- OK 3.6% 1
- TN 3.6% 1
- AK 3.6% 1
+9 more states
By decade of manufacture
- 1970s 51.6% 16
- 1980s 6.5% 2
- Unknown 41.9% 13
NTSB records
4 event(s) on file. Showing the most recent 4.
- Feb 14, 2023 N5KR Kona, Hawaii Minor NTSB docket ↗
- Mar 2, 2005 N88TN Fort Lauderdale, Florida NTSB docket ↗
- Feb 13, 1988 N602SP GALISTEO, New Mexico Fatal NTSB docket ↗
- Sep 9, 1978 N4CZ JACOBSEN, Minnesota NTSB docket ↗
Airworthiness directives
12 directive(s) on file. Showing the most recent 12.
- 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…
- May 13, 2011
Airworthiness Directives; Cessna Aircraft Company Models 150, 152, 170, 172, 175, 177, 180, 182, 185, 188, 190, 195, 206, 207, 210, T303, 336, and 337 Airplanes
We are superseding an existing airworthiness directive (AD) for Cessna Aircraft Company (Cessna) 150, 152, 170, 172, 175, 177, 180, 182, 185, 188, 190, 195, 206, 207, 210, T303, 336, and 337 series airplanes. That AD currently requires repetitive inspections and replacement of parts, if necessary, of the seat rail and…
- May 4, 2011
Airworthiness Directives; Cessna Aircraft Company (Cessna) Models 337, 337A (USAF 02B), 337B, 337C, 337D, 337E, T337E, 337F, T337F, 337G, T337G, M337B, F 337E, FT337E, F 337F, FT337F, F 337G, and FT337GP Airplanes
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require inspecting the wings for internal and external damage, repairing any damage, reinforcing the wings, installing operational limitation placards in the cockpit, and adding limitations to the airplane flig…
- Nov 8, 2010
Airworthiness Directives; Cessna Aircraft Company Models 150, 152, 170, 172, 175, 177, 180, 182, 185, 188, 190, 195, 206, 207, 210, T303, 336, and 337 Airplanes
We propose to supersede Airworthiness Directive (AD) 87-20-03 R2, which applies to certain Cessna Aircraft Company (Cessna) 150, 152, 170, 172, 175, 177, 180, 182, 185, 188, 190, 195, 206, 207, 210, T303, 336, and 337 series airplanes. AD 87-20-03 R2 currently requires repetitive inspections and replacement of parts,…
- Oct 19, 2010
Airworthiness Directives; Cessna Aircraft Company (Cessna) Models 336, 337, 337A (USAF 02B), 337B, M337B (USAF 02A), T337B, 337C, T337C, 337D, T337D, 337E, T337E, 337F, T337F, 337G, T337G, 337H, P337H, T337H, T337H-SP, F337E, FT337E, F337F, FT337F, F337G, FT337GP, F337H, and FT337HP Airplanes
We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires inspecting the wings for internal and external damage, repairing any damage found, installing an operational limitation placard in the cockpit, adding limitations to the flight manual supplement, and reporting the result…
- 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…
- 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…
- 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…
- 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…
- Mar 22, 2000
Airworthiness Directives; Cessna Aircraft Company 150, 152, 172, 177, 180, 182, 185, 188, 206, 207, 210, and 337 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to Cessna Aircraft Company (Cessna) 150, 152, 172, 177, 180, 182, 185, 188, 206, 207, 210, and 337 series airplanes. This AD requires measuring the visible length of standpipe (tube) in the top assembly of the fuel strainer assembly for the correct…
- Jul 22, 1998
Airworthiness Directives; Cessna Aircraft Company 150, 152, 172, 177, 180, 182, 185, 188, 206, 207, 210, and 337 Series Airplanes
This document proposes to adopt a new airworthiness directive (AD) that would apply to Cessna Aircraft Company (Cessna) Model 150, 152, 172, 177, 180, 182, 185, 188, 206, 207, 210, and 337 series airplanes. The proposed AD would require measuring the visible length of standpipe (tube) in the top assembly of the fuel s…
- Jan 22, 1997
Airworthiness Directives; Cessna Aircraft Company 100, 200, 300, and 400 Series Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to Cessna Aircraft Company (Cessna) 100, 200, 300, and 400 series airplanes. This action requires checking the airplane maintenance records for any fuel, oil, or hydraulic hose, Cessna part number (P/N) S51-10, replaced between March 1995 and Februa…
Type certificate data sheets · 1 match in the FAA catalog
- A6CE Cessna Aircraft Company Historical Rev 40 · 11/03/2004
Models: 337G, 337A, 337H, 337 + 15 more
Supplemental type certificates · 320 on file
- 03/03/2026 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 07/24/2025 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 07/21/2025 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 04/01/2025 STC SA02738CH (PAGE 5) Installation of L-3 Communications Avionics Systems Acron Aviation Inc. DRS ↗
- 04/01/2025 STC SA04046CH Page 1 Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) Acron Aviation Inc. DRS ↗
- 08/27/2024 STC SA04837NY Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights AeroLED's Holdings, LLC 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 DRS ↗
- 06/13/2024 STC SA02511SE Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. 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 DRS ↗
- 12/12/2022 STC SA02738CH (PAGE 5) Installation of L-3 Communications Avionics Systems L3Harris Aviation Products Inc. DRS ↗
- 12/12/2022 STC SA04046CH Page 1 Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) L3Harris Aviation Products Inc. DRS ↗
- 03/30/2022 STC SA02444AK (PAGE 1) Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed ADS-B Technologies LLC DRS ↗
- 09/01/2021 STC SA11174SC PAGE 1 Installation of BendixKing by Honeywell KSN 770 and KSN 765 WAAS LPV approach capable nav/comm systems Honeywell International Inc (Bendix King) DRS ↗
- 05/17/2021 STC ST02307CH Installation of Rudder Pedal Extensions. Flight Boss Ltd. 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 DRS ↗
- 07/17/2020 STC SA10236SC (2 OF 4) Installation of a GDC 31 Roll Steering Converter DAC International Inc DRS ↗
- 06/04/2020 STC SA02268CH (PAGE 3) Installation of Airwolf Filter Corp. Air Oil Separator Airwolf Filter Corporation DRS ↗
- 06/04/2020 STC SA02268CH (PAGE 2) Installation of Airwolf Filter Corp. Air Oil Separator Airwolf Filter Corporation DRS ↗
- 03/07/2020 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 … Airwolf Filter Corporation DRS ↗
- 07/25/2019 STC SA02636SE Installation of Garmin GPS 175 Navigation System and GNX 375 Navigation System with ADS-B In/Out Transponder. Garmin International Inc DRS ↗
- 07/16/2019 STC SA01861SE (PAGE 2) Fabrication and installation of Landing Light Controller Seaton Engineering Corp. DRS ↗
- 07/16/2019 STC SA01800SE (PG 2) Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. Seaton Engineering Corp. DRS ↗
- 07/11/2019 STC SA03286CH Install an electronic engine ignition system Electroair Acquisition Corporation DRS ↗
- 07/11/2019 STC SA04032CH Install rocker switch assemblies Electroair Acquisition Corporation DRS ↗
- 07/02/2019 STC SA32RM Installation of electrically driven freon air-conditioning system. Air Comm Corporation DRS ↗
- 06/19/2019 STC SA00344BO PAGE 1 Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies DRS ↗
- 05/24/2019 STC SA02019SE-D (1 OF 3) Installation of Garmin GTN 6XX/7XX Navigation System Garmin International Inc DRS ↗
- 05/24/2019 STC SA02019SE-D (1 OF 2) Installation of Garmin GTN 6XX/7XX Navigation System Garmin International Inc DRS ↗
- 05/24/2019 STC SA02019SE-D (3 OF 3) Installation of Garmin GTN 6XX/7XX Navigation System Garmin International Inc 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 DRS ↗
+ 290 more STCs on file
PMA replacement parts · 2 on file
- CD11049-1#https://drs.faa.gov/browse/excelExternalWindow/5B2CC009D0956A7D8625765600687E26.0001## Heater C & D Associates Inc replaces Janitrol P/N 74D01, 74D01-1, 74D01-2, 74D01-3(EL)
- CD11049-1#https://drs.faa.gov/browse/excelExternalWindow/FF5041BC6D14205F8625706700492FF5.0001## Model CD25K Heater C & D Associates Inc replaces Janitrol P/N: 74D01, 74D01-1, 74D01-2, 74D01-3(EL)
Advisory circulars & Federal Register
Advisory circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register · Parts 91 & 43
- 2026-09-14 Use of Certain Restricted Category Aircraft for the Transport of Firefighters for Wildfire Suppression FR ↗
- 2026-07-31 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
- 2026-07-02 Enabling Supersonic Overland Flight FR ↗
- 2026-07-01 Mechanic Certification: Inspection Rating and Recent Experience Requirements FR ↗
- 2026-06-30 Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period FR ↗
Registered N-numbers · 31
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N11PE | DE | — | · | Look up ↗ |
| N121EW | CA | — | · | Look up ↗ |
| N1444A | WA | — | · | Look up ↗ |
| N1ZX | — | 1980 | · | Look up ↗ |
| N330LC | FL | 1980 | · | Look up ↗ |
| N3337 | WA | 1978 | · | Look up ↗ |
| N337HB | DE | — | · | Look up ↗ |
| N337RW | KY | 1977 | · | Look up ↗ |
| N337TW | OK | 1977 | · | Look up ↗ |
| N337U | TN | — | · | Look up ↗ |
| N374DN | AK | 1978 | · | Look up ↗ |
| N42GB | TX | — | · | Look up ↗ |
| N49AY | OR | — | · | Look up ↗ |
| N4BV | AZ | — | · | Look up ↗ |
| N4CZ | SD | 1978 | ● | Look up ↗ |
| N4DY | FL | 1978 | · | Look up ↗ |
| N4DZ | FL | 1978 | · | Look up ↗ |
| N4FZ | DE | — | · | Look up ↗ |
| N560 | MT | 1979 | · | Look up ↗ |
| N5KR | HI | 1979 | ● | Look up ↗ |
| N5KV | TX | — | · | Look up ↗ |
| N602SP | WI | 1978 | ● | Look up ↗ |
| N603SF | FL | 1979 | · | Look up ↗ |
| N60ST | — | — | · | Look up ↗ |
| N64N | AZ | 1974 | · | Look up ↗ |
| N6LN | OH | 1979 | · | Look up ↗ |
| N6ML | IL | — | · | Look up ↗ |
| N6MU | NM | — | · | Look up ↗ |
| N777SN | NV | 1979 | · | Look up ↗ |
| N88TN | TX | 1979 | ● | Look up ↗ |
| N92GD | — | 1979 | · | Look up ↗ |
Source — FAA Aircraft Registry
Sources
- FAA Aircraft Registry ↗ Refreshed Apr 27, 2026 Available
- NTSB CAROL ↗ Refreshed Jun 10, 2026 Available
- Federal Register (FAA Airworthiness Directives) ↗ Refreshed Apr 27, 2026 Available