# Search: 550

Airworthiness directives: 219 matches in release 2026-10-30. Page 1.

- [AD 2020-16-11](https://openairdocs.org/ad/2020-16-11.md): SUMMARY: Reciprocating Cylinder Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 23 more · Effective Sep 21, 2020
  > …**550**-G","IO-**550**-N","IO-**550**-P","IO-**550**-R","IOF-**550**-N","IOF-**550**…
- [AD 2016-16-12](https://openairdocs.org/ad/2016-16-12.md): Cylinder assemblies · Continental Motors LTSIO-520-AE, TSIO-520-A, TSIO-520-AE and 89 more · Effective Sep 15, 2016
  > This AD applies to all Continental Motors, Inc. (CMI) model -520 and -**550** reciprocating engines, and…
- [AD 2009-24-52](https://openairdocs.org/ad/2009-24-52.md): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 192 more · superseded or historical
  > This AD supersedure applies to all Teledyne Continental Motors (TCM) 240, 360, 470, 520, and **550**…
- [AD 2023-02-12](https://openairdocs.org/ad/2023-02-12.md): Engine Air Intake System · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more · Effective Feb 17, 2023
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2010-11-04](https://openairdocs.org/ad/2010-11-04.md): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 190 more · Effective Jun 16, 2010
  > Airworthiness Directives; Teledyne Continental Motors (TCM) 240, 346, 360, 470, 520, and **550** Series and Rolls…
- [AD 99-09-17](https://openairdocs.org/ad/99-09-17.md): Crankshaft · Teledyne Continental Motors IO-470-A, IO-470-C, IO-470-D and 114 more · superseded or historical
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2009-19-07](https://openairdocs.org/ad/2009-19-07.md): EQ3 cylinders · Continental Motors IO-470-C, IO-470-D, IO-470-E and 72 more · Effective Oct 7, 2009
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2016-21-04](https://openairdocs.org/ad/2016-21-04.md): Oil cooler cross fitting assembly · Continental Motors TSIO-550-C, TSIO-550-K, TSIO-550-N and 2 more · Effective Nov 18, 2016
  > This AD applies to Continental Motors, Inc. (CMI) TSIO-**550**-K, TSIOF-**550**-K, TSIO-**550**…
- [AD 2007-16-10](https://openairdocs.org/ad/2007-16-10.md): Kelly Aerospace Power Systems turbochargers · Turbonormalizing system (Engine Technologies STC SE10589SC or SA10588SC) · Effective Aug 23, 2007
  > ["IO-**550**-N","TSIO-520-BE","TSIO-**550**-A","TSIO-**550**-B","TSIO-**550**-C","TSIO…
- [AD 99-19-01](https://openairdocs.org/ad/99-19-01.md): No. 2 and No. 5 Crankshaft Inspections · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more · Effective Sep 30, 1999
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2004-08-10](https://openairdocs.org/ad/2004-08-10.md): Serial-numbered (SN) cylinders · Modify Teledyne Continental TSIO-520-NB engine (RAM Aircraft Limited Partnership STC SE09104SC or 4 others) · Effective May 5, 2004
  > …**550**-A","TSIO-**550**-B","TSIO-**550**-C","TSIO-**550**-E","TSIO-**550**-G","TSIO-**550**…
- [AD 93-16-15](https://openairdocs.org/ad/93-16-15.md): Fuel Pump Drive Shaft · Continental Motors IO-520-B, IO-520-BA, IO-520-BB and 27 more · Effective Dec 14, 1993
  > …520M, IO-520MB; IO-**550A**, IO-**550B**, IO-**550C**, IO-**550G**; TSIO-520B, TSIO-520BB, TSIO…
- [AD 93-08-17](https://openairdocs.org/ad/93-08-17.md): Oil Pick-Up Tube · Continental Motors IO-470-A, IO-470-C, IO-470-D and 104 more · Effective Aug 23, 1993
  > TELEDYNE CONTINENTAL MOTORS (TCM) Model O-470, IO-470, IO-520, TSIO-520, and IO-**550**…
- [AD 93-10-02](https://openairdocs.org/ad/93-10-02.md): Missing Cylinder Valve Retainer Key · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 180 more · Effective Aug 12, 1993
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2023-04-08](https://openairdocs.org/ad/2023-04-08.md): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 141 more · Effective Feb 23, 2023 · superseded or historical
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2000-23-21](https://openairdocs.org/ad/2000-23-21.md): Crankshaft · Continental Motors IO-360-A, IO-360-AB, IO-360-B and 164 more · Effective Dec 12, 2000
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2007-07-06](https://openairdocs.org/ad/2007-07-06.md): Aileron and the elevator linear bearings and control rods · Cessna LC40-550FG, LC41-550FG and LC42-550FG · Effective Apr 9, 2007 · superseded or historical
  > Airworthiness Directives; Columbia Aircraft Manufacturing (Previously the Lancair Company) Models LC40-**550FG**, LC41-**550FG**, and LC42…
- [AD 2023-05-16](https://openairdocs.org/ad/2023-05-16.md): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 147 more · Effective Mar 15, 2023
  > …**550**-A","IO-**550**-B","IO-**550**-C","IO-**550**-D","IO-**550**-E","IO-**550**…
- [AD 2009-16-03](https://openairdocs.org/ad/2009-16-03.md): Cylinder assemblies · Continental Motors IO-520-A, IO-520-B, IO-520-BA and 55 more · Effective Sep 9, 2009 · superseded or historical
  > Airworthiness Directives; Teledyne Continental Motors (TCM) IO- 520, TSIO-520, and IO-**550** Series Reciprocating Engines…
- [AD 2013-11-10](https://openairdocs.org/ad/2013-11-10.md): Fuselage Structure (General) · Cessna LC40-550FG, LC41-550FG and LC42-550FG · Effective Jul 26, 2013
  > …**550FG**, LC41-**550FG**, and LC42-**550FG** airplanes that are certificated in any category: (i) LC40-**550FG**…

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