# AD 2009-24-52: Hydraulic lifters - Type: Emergency airworthiness directive - Status: Historical - Products: Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C, GTSIO-520-D, GTSIO-520-E, GTSIO-520-F, GTSIO-520-H, GTSIO-520-K, GTSIO-520-L, GTSIO-520-M, GTSIO-520-N, IO-360-A and 183 more - Issued: November 18, 2009 - Issued as: Emergency AD - Supersedes: [AD 2009-24-51](https://openairdocs.org/ad/2009-24-51) - Superseded by: [AD 2010-11-04](https://openairdocs.org/ad/2010-11-04) - Product type: Engine - Registered aircraft: 57,477 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F7FDFF19AAF9A48D8625767200778CAE.0001 - DRS record last changed: August 7, 2025 - Page: https://openairdocs.org/ad/2009-24-52 ## The airworthiness directive 1 EMERGENCY AIRWORTHINESS DIRECTIVE Aircraft Certification Service Washington, DC www.faa.gov/aircraft/safety/alerts/ U.S. Department of Transportation Federal Aviation Administration DATE: November 18, 2009 AD #: 2009-24-52 This emergency airworthiness directive (AD) supersedure is sent to all owners and operators of all Teledyne Continental Motors (TCM) 240, 360, 470, 520, and 550 series reciprocating engines. Background This emergency AD supersedure results from TCM reporting three occurrences of rapid wear on the face of hydraulic lifters, part numbers (P/Ns) 657913, 657915, and 657916, at 5, 6, and 38 hours time-in-service, and from the need to add the 550 series engines to the applicability. This condition, if not corrected, could result in loss of engine power and loss of control of the airplane. Explanation of Relevant Service Information We have reviewed and approved TCM Mandatory Service Bulletin (MSB) No. MSB09-08, dated November 3, 2009. The MSB describes procedures for inspecting engines for hydraulic lifters, P/Ns 657913, 657915, and 657916, and replacing those lifters if installed. FAA’s Determination and Requirements of the Rule We have identified an unsafe condition that is likely to exist or develop on other TCM engines of this same type design. This AD requires determining if hydraulic lifters, P/Ns 657913, 657915, and 657916, are installed, and replacing those lifters if installed. You must use the service information described previously to perform these actions. Authority for this Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, “General requirements.” Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Determination of Rule’s Effective Date We are issuing this AD supersedure under 49 U.S.C. Section 44701 according to the authority delegated to me by the Administrator, and it is effective immediately upon receipt. 2009-24-52 Teledyne Continental Motors (Formerly Continental): Directorate Identifier 2009-NE-38-AD. 2 Effective Date (a) Emergency AD 2009-24-52, issued on November 18, 2009, is effective upon receipt. Affected ADs (b) This AD supersedes Emergency AD 2009-24-51, issued November 16, 2009. Applicability (c) This AD supersedure applies to all Teledyne Continental Motors (TCM) 240, 360, 470, 520, and 550 series reciprocating engines with hydraulic valve lifters, part numbers (P/Ns) 657913, 657915, or 657916, installed. These engines are installed on, but not limited to, general aviation airplanes. Unsafe Condition (d) This AD supersedure results from TCM reporting three occurrences of rapid wear on the face of lifters, P/Ns 657913, 657915, and 657916, at 5, 6, and 38 hours time-in-service, and from the need to add the 550 series engines to the applicability. We are issuing this AD to prevent excessive hydraulic lifter wear, which can result in loss of engine power and loss of control of the airplane. Compliance (e) You are responsible for having the actions required by this AD performed before further flight after the effective date of this AD, unless the actions have already been done. Excluded Engines (f) If your engine was manufactured or rebuilt before June 19, 2009, and you have not had any hydraulic lifters replaced after June 19, 2009, no action is required. Determining P/N of Lifters (g) If your engine was manufactured or rebuilt on or after June 19, 2009, or if any of your hydraulic lifters were replaced on or after June 19, 2009, and you can’t determine the P/N of your hydraulic lifters from the engine records: (1) Use the list of engine serial numbers in Section A of TCM Mandatory Service Bulletin (MSB) No. MSB09-8, dated November 3, 2009. (2) Inspect the hydraulic lifters in each cylinder for P/Ns 657913, 657915, and 657916. Use TCM MSB No. MSB09-8, dated November 3, 2009, Section 1. Action Required, paragraphs 1. through 3. to determine the P/N of the lifters. Replacing the Lifters (h) If your engine has any affected hydraulic lifters, replace the hydraulic lifters using TCM MSB No. MSB09-8, dated November 3, 2009, Step 2, paragraphs 2. through 4. Installation Prohibition (i) After the effective date of this AD, do not install any hydraulic lifters, P/Ns 657913, 657915, or 657916, into any TCM 240, 360, 470, 520, or 550 series reciprocating engine. Alternative Methods of Compliance (j) The Manager, Atlanta Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. 3 Contact Information (k) For further information, contact: Anthony Holton, Aerospace Engineer, Atlanta Certification Office, FAA, Small Airplane Directorate, 1701 Columbia Avenue, College Park, GA 30337; e-mail: anthony.holton@faa.gov; telephone (404) 474-5567; fax (404) 474-5606. Issued in Burlington, Massachusetts, on November 18, 2009. Peter A. White, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. ## Affected data sheets (16) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS E8CE](https://openairdocs.org/tcds/E8CE): Continental Aerospace Technologies, Inc.; names 31 of 31 models: TSIO-520-BB, TSIO-520-B, TSIO-520-P, TSIO-520-R, TSIO-520-AF, TSIO-520-M, TSIO-520-J, TSIO-520-A… - [TCDS E9CE](https://openairdocs.org/tcds/E9CE): Continental Aerospace Technologies, Inc.; names 28 of 28 models: TSIO-360-SB, TSIO-360-JB, TSIO-360-FB, TSIO-360-HB, TSIO-360-H, TSIO-360-NB, TSIO-360-GB, TSIO-360-E… - [TCDS E-273](https://openairdocs.org/tcds/E-273): Continental Aerospace Technologies, Inc.; names 21 of 21 models: O-470-G-CI, O-470-T, O-470-B-CI, O-470-N, O-470-R, IO-470-C, O-470-H, O-470-A… - [TCDS E3SO](https://openairdocs.org/tcds/E3SO): Continental Aerospace Technologies, Inc.; names 20 of 20 models: IO-550-F, IO-550-G, IOF-550-B, IOF-550-E, IOF-550-L, IOF-550-D, IOF-550-N, IO-550-L… - [TCDS 3E1](https://openairdocs.org/tcds/3E1): Continental Aerospace Technologies, Inc.; names 19 of 19 models: LIO-470-A, IO-470-H, IO-470-D, IO-470-R, IO-470-J, IO-470-LO, IO-470-M, IO-470-L… - [TCDS E5CE](https://openairdocs.org/tcds/E5CE): Continental Aerospace Technologies, Inc.; names 18 of 18 models: IO-520-NB, IO-520-BA, LIO-520-P, IO-520-A, IO-520-B, IO-520-P, IO-520-C, IO-520-L… - [TCDS E1CE](https://openairdocs.org/tcds/E1CE): Continental Aerospace Technologies, Inc.; names 16 of 18 models: IO-360-A, IO-360-G, IO-360-B, IO-360-C, IO-360-ES, IO-360-H, IO-360-JB, IO-360-D… - [TCDS E5SO](https://openairdocs.org/tcds/E5SO): Continental Aerospace Technologies, Inc.; names 10 of 12 models: TSIO-550-C, TSIO-550-N, TSIO-550-G, TSIOF-550-J, TSIO-550-E, TSIOF-550-D, TSIO-550-B, TSIO-550-A… - [TCDS E7CE](https://openairdocs.org/tcds/E7CE): Continental Aerospace Technologies, Inc.; names 9 of 10 models: GTSIO-520-E, GTSIO-520-K, GTSIO-520-D, GTSIO-520-C, GTSIO-520-M, GTSIO-520-F, GTSIO-520-N, GTSIO-520-L… - [TCDS E-269](https://openairdocs.org/tcds/E-269): Continental Aerospace Technologies, Inc.; names 8 of 8 models: O-470-11, O-470-15, O-470-11B-CI, O-470-13, O-470-11-CI, O-470-11B, O-470-4, O-470-13A - [TCDS E-252](https://openairdocs.org/tcds/E-252): Continental Aerospace Technologies, Inc.; names 4 of 15 models: O-200-A, O-200-C, O-200-B, O-200-D - [TCDS 3E3](https://openairdocs.org/tcds/3E3): Continental Aerospace Technologies, Inc.; names 3 of 3 models: TSIO-470-C, TSIO-470-B, TSIO-470-D - [TCDS E4SO](https://openairdocs.org/tcds/E4SO): Continental Aerospace Technologies, Inc.; names 3 of 3 models: TSIOL-550-A, TSIOL-550-B, TSIOL-550-C - [TCDS E-281](https://openairdocs.org/tcds/E-281): Continental Aerospace Technologies, Inc.; names 2 of 2 models: O-470-2, FSO-470-A - [TCDS E11EU](https://openairdocs.org/tcds/E11EU): Continental Aerospace Technologies, Inc.; names 1 of 1 models: RR O-240-A - [TCDS E2CE](https://openairdocs.org/tcds/E2CE): Continental Aerospace Technologies, Inc.; names 1 of 1 models: GIO-470-A ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 57,477 (0 by airframe model, 57,477 by engine model) - Makers: Cessna 31,895, Beech 10,134, Cirrus Design 7,522, Piper 1,549, Mooney 1,266, Raytheon 597, Bellanca 583, Columbia Aircraft Mfg 254, Lancair 250, Hawker Beechcraft 210 Models with the most aircraft: - [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series): 12,779 aircraft (engine model) - [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series): 9,486 aircraft (engine model) - [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series): 8,790 aircraft (engine model) - [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series): 4,499 aircraft (engine model) - [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series): 4,064 aircraft (engine model) - [Continental IO-550 series](https://openairdocs.org/engine/continental-io-550-series): 3,077 aircraft (engine model) - [Continental TSIO-550-K](https://openairdocs.org/engine/continental-tsio-550-k): 2,799 aircraft (engine model) - [Continental IO-550-N](https://openairdocs.org/engine/continental-io-550-n): 2,772 aircraft (engine model) - [Continental TSIO-360 series](https://openairdocs.org/engine/continental-tsio-360-series): 1,900 aircraft (engine model) - [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series): 1,885 aircraft (engine model) - [Continental TSIO-550-C](https://openairdocs.org/engine/continental-tsio-550-c): 480 aircraft (engine model) - [Continental IO-360-ES](https://openairdocs.org/engine/continental-io-360-es): 401 aircraft (engine model) - [Continental GTSIO-520-C](https://openairdocs.org/engine/continental-gtsio-520-c): 387 aircraft (engine model) - [Continental TSIO-550 series](https://openairdocs.org/engine/continental-tsio-550-series): 382 aircraft (engine model) - [Continental IO-550-B](https://openairdocs.org/engine/continental-io-550-b): 373 aircraft (engine model) - [Continental O-200 series](https://openairdocs.org/engine/continental-o-200-series): 329 aircraft (engine model) - [Continental O-200A](https://openairdocs.org/engine/continental-o-200a): 295 aircraft (engine model) - [Continental IO-470 series](https://openairdocs.org/engine/continental-io-470-series): 225 aircraft (engine model) - [Continental O-200-D](https://openairdocs.org/engine/continental-o-200-d): 210 aircraft (engine model) - [Continental IO-550-C](https://openairdocs.org/engine/continental-io-550-c): 199 aircraft (engine model) All 159 models: https://openairdocs.org/ad/2009-24-52/models.md Every aircraft: https://openairdocs.org/ad/2009-24-52/aircraft.md ## Related documents - [AD 2009-24-51](https://openairdocs.org/ad/2009-24-51) (historical): Hydraulic lifters · Teledyne Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 156 more. Replaced by this AD - [AD 2010-11-04](https://openairdocs.org/ad/2010-11-04): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 190 more. Effective Jun 16, 2010. Supersedes this AD Its text cites no advisory circulars or STCs. ## NTSB investigations that cite this AD (1) 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 CEN10FA029](https://openairdocs.org/ntsb/CEN10FA029), Oct 27, 2009: Beech A36TC (C-FFIH), Kalamazoo, MI, destroyed, 1 fatal. Probable cause: The loss of engine power for an undetermined reason. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.