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2016-16-12: Cylinder assemblies

FAA order 2016-16-12 is an airworthiness directive in force since September 15, 2016. The FAA's subject line: Cylinder assemblies. It names the Continental GTSIO-520-C, Continental GTSIO-520-D, Continental GTSIO-520-H, Continental GTSIO-520-L, Continental GTSIO-520-M, Continental GTSIO-520-N, Continental GTSIO-520 series, Continental IO-520-A, Continental IO-520-B, Continental IO-520-BA, Continental IO-520-BB, Continental IO-520-C, Continental IO-520-CB, Continental IO-520-D, Continental IO-520-E, Continental IO-520-F, Continental IO-520-K, Continental IO-520-L, Continental IO-520-M, Continental IO-520-MB, Continental IO-520 series, Continental IO-550-A, Continental IO-550-B, Continental IO-550-C, Continental IO-550-D, Continental IO-550-E, Continental IO-550-F, Continental IO-550-G, Continental IO-550-L, Continental IO-550-N, Continental IO-550-P, Continental IO-550-R, Continental IOF-550-N, Continental TSIO-520-AE, Continental TSIO-520-AF, Continental TSIO-520-B, Continental TSIO-520-BB, Continental TSIO-520-BE, Continental TSIO-520-C, Continental TSIO-520-CE, Continental TSIO-520-D, Continental TSIO-520-E, Continental TSIO-520-EB, Continental TSIO-520-G, Continental TSIO-520-H, Continental TSIO-520-J, Continental TSIO-520-JB, Continental TSIO-520-K, Continental TSIO-520-L, Continental TSIO-520-M, Continental TSIO-520-N, Continental TSIO-520-NB, Continental TSIO-520-P, Continental TSIO-520-R, Continental TSIO-520 series, Continental TSIO-520-T, Continental TSIO-520-U, Continental TSIO-520-UB, Continental TSIO-520-VB, Continental TSIO-520-WB, Continental TSIO-550-A, Continental TSIO-550-B, Continental TSIO-550-C, Continental TSIO-550-E, Continental TSIO-550-G, Continental TSIO-550-K, Continental TSIO-550-N, Continental TSIOF-550J, Continental TSIOF550-D, Continental TSIOL-550-A, Continental TSIOL-550-C engines: about 21,815 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.

What it applies to as the FAA lists it

Kind of product
Engine
Makes
Continental Motors; Continental Motors Inc
Models
LTSIO-520-AE, TSIO-520-A, TSIO-520-AE, TSIO-520-AF, TSIO-520-B, TSIO-520-BB, TSIO-520-BE, TSIO-520-C, TSIO-520-CE, TSIO-520-D, TSIO-520-DB, TSIO-520-E, TSIO-520-EB, TSIO-520-G, TSIO-520-H, TSIO-520-J, TSIO-520-JB, TSIO-520-K, TSIO-520-KB, TSIO-520-L, TSIO-520-LB, TSIO-520-M, TSIO-520-N, TSIO-520-NB, TSIO-520-P, TSIO-520-R, TSIO-520-T, TSIO-520-U, TSIO-520-UB, TSIO-520-VB, TSIO-520-WB, TSIO-550-A, TSIO-550-B, TSIO-550-C, TSIO-550-E, TSIO-550-G, TSIO-550-K, TSIO-550-N, TSIOF-550-D, TSIOF-550-J, TSIOF-550-K, TSIOF-550-P, TSIOL-550-A, TSIOL-550-B, TSIOL-550-C, GTSIO-520-C, GTSIO-520-D,...
Engine series
Continental GTSIO-520-C 387 aircraft
Continental GTSIO-520-D 2 aircraft
Continental GTSIO-520-H 9 aircraft
Continental GTSIO-520-L 16 aircraft
Continental GTSIO-520-M 6 aircraft
Continental GTSIO-520-N 10 aircraft
Continental GTSIO-520 series 179 aircraft
Continental IO-520-A 8 aircraft
Continental IO-520-B 16 aircraft
Continental IO-520-BA 25 aircraft
Continental IO-520-BB 43 aircraft
Continental IO-520-C 4 aircraft
Continental IO-520-CB 3 aircraft
Continental IO-520-D 95 aircraft
Continental IO-520-E 2 aircraft
Continental IO-520-F 80 aircraft
Continental IO-520-K 8 aircraft
Continental IO-520-L 11 aircraft
Continental IO-520-M 2 aircraft
Continental IO-520-MB 8 aircraft
Continental IO-520 series 9,484 aircraft
Continental IO-550-A 3 aircraft
Continental IO-550-B 373 aircraft
Continental IO-550-C 199 aircraft
Continental IO-550-D 36 aircraft
Continental IO-550-E 6 aircraft
Continental IO-550-F 26 aircraft
Continental IO-550-G 115 aircraft
Continental IO-550-L 1 aircraft
Continental IO-550-N 2,778 aircraft
Continental IO-550-P 6 aircraft
Continental IO-550-R 7 aircraft
Continental IOF-550-N 1 aircraft
Continental TSIO-520-AE 8 aircraft
Continental TSIO-520-AF 4 aircraft
Continental TSIO-520-B 9 aircraft
Continental TSIO-520-BB 1 aircraft
Continental TSIO-520-BE 9 aircraft
Continental TSIO-520-C 17 aircraft
Continental TSIO-520-CE 3 aircraft
Continental TSIO-520-D 4 aircraft
Continental TSIO-520-E 6 aircraft
Continental TSIO-520-EB 6 aircraft
Continental TSIO-520-G 3 aircraft
Continental TSIO-520-H 12 aircraft
Continental TSIO-520-J 1 aircraft
Continental TSIO-520-JB 1 aircraft
Continental TSIO-520-K 1 aircraft
Continental TSIO-520-L 1 aircraft
Continental TSIO-520-M 60 aircraft
Continental TSIO-520-N 11 aircraft
Continental TSIO-520-NB 52 aircraft
Continental TSIO-520-P 12 aircraft
Continental TSIO-520-R 22 aircraft
Continental TSIO-520 series 4,115 aircraft
Continental TSIO-520-T 1 aircraft
Continental TSIO-520-U 2 aircraft
Continental TSIO-520-UB 27 aircraft
Continental TSIO-520-VB 11 aircraft
Continental TSIO-520-WB 19 aircraft
Continental TSIO-550-A 1 aircraft
Continental TSIO-550-B 7 aircraft
Continental TSIO-550-C 480 aircraft
Continental TSIO-550-E 46 aircraft
Continental TSIO-550-G 129 aircraft
Continental TSIO-550-K 2,778 aircraft
Continental TSIO-550-N 2 aircraft
Continental TSIOF-550J 1 aircraft
Continental TSIOF550-D 1 aircraft
Continental TSIOL-550-A 1 aircraft
Continental TSIOL-550-C 2 aircraft

Dates and paperwork

In force since
September 15, 2016
Published
August 11, 2016 (signed July 19, 2016)
Docket
FAA-2012-0002
Status
Current
The FAA's document
Read the order on the FAA's site

The FAA's summary their words, unchanged

We are adopting a new airworthiness directive (AD) for certain Continental Motors, Inc., (CMI) San Antonio (formerly known as Airmotive Engineering Corp. (AEC)), replacement parts manufacturer approval (PMA) cylinder assemblies marketed by Engine Components International Division (ECi). On July 17, 2015, AEC was purchased by CMI and is now operating as ``Continental Motors--San Antonio.'' These cylinder assemblies are used on all CMI model -520 and -550 reciprocating engines, and on all other CMI engine models approved for the use of model -520 and -550 cylinder assemblies, such as the CMI model -470 when modified by supplemental type certificate (STC). This AD was prompted by reports of multiple cylinder head-to-barrel separations and cracked and leaking aluminum cylinder heads. This AD requires removal of the affected cylinder assemblies, including overhauled cylinder assemblies, according to a phased removal schedule. We are issuing this AD to prevent failure of the cylinder assemblies, which could lead to failure of the engine, in-flight shutdown, and loss of control of the airplane.

The order itself the regulatory text, as published

Show the full text (6,273 characters)
Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): 2016-16-12 Continental Motors, Inc. (formerly Teledyne Continental Motors, Inc., formerly Continental): Amendment 39-18610; Docket No. FAA-2012-0002; Directorate Identifier 2011-NE-42-AD. (a) Effective Date This AD is effective September 15, 2016. (b) Affected ADs None. [[Page 52991]] (c) Applicability This AD applies to all Continental Motors, Inc. (CMI) model -520 and -550 reciprocating engines, and to all other CMI engine models approved for the use of model -520 and -550 cylinder assemblies such as the CMI model -470 when modified by supplemental type certificate (STC), with Continental Motors Inc., San Antonio (formerly Airmotive Engineering Corp.), replacement parts manufacturer approval (PMA) cylinder assemblies, marketed by Engine Components International Division (hereinafter referred to as ECi), part number (P/N) AEC 631397, with ECi Class 71 or Class 76, serial number (S/N) 1 through S/N 61176, installed. (d) Unsafe Condition This AD was prompted by multiple failure reports of cylinder head-to-barrel separations and cracked and leaking aluminum cylinder heads. We are issuing this AD to prevent failure of the cylinder assemblies, which could lead to failure of the engine, in-flight shutdown, and loss of control of the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) Review the engine maintenance records to determine if any affected cylinder assemblies are installed. (2) If you cannot determine based on review of engine maintenance records if any affected cylinder assemblies are installed, comply with paragraph (e)(4) of this AD. (3) If you do not have any of the affected ECi cylinder assemblies installed on your engine, no further action is required. (4) Cylinder Identification and Serial Number Location (i) Check the cylinder assembly P/N and Class number. The ECi cylinder assembly, P/N AEC 631397, Class 71 or Class 76, is stamped on the bottom flange of the cylinder barrel. Guidance on the P/N and Class number description and location can be found in ECi Service Instruction No. 99-8-1, Revision 9, dated February 23, 2009. (ii) If you cannot see the cylinder assembly P/N when the cylinder assembly is installed on the engine, you may use the following alternative method of identification: (A) Remove the cylinder assembly rocker box cover. (B) Find the letters ECi, cast into the cylinder head between the valve stems. (C) Check the cylinder head casting P/N. Affected cylinder assemblies have the cylinder head casting, P/N AEC 65385, cast into the cylinder head between the valve stems. (D) Find the cylinder assembly S/N as specified in paragraphs (e)(4)(iii) or (e)(4)(iv) of this AD, as applicable. (iii) For ECi cylinder assemblies, P/N AEC 631397, manufactured through 2008, find the cylinder assembly S/N stamped on the intake port boss two inches down from the top edge of the head. (iv) For ECi cylinder assemblies, P/N AEC 631397, manufactured on or after January 1, 2009, find the cylinder assembly S/N stamped just below the top edge of the head on the exhaust port side. (5) Removal From Service (i) For any affected cylinder assembly with 680 or fewer operating hours time-in-service (TIS) since new on the effective date of this AD, remove the cylinder assembly from service before reaching 1,000 operating hours TIS since new. (ii) For any affected cylinder assembly with more than 680 operating hours TIS since new and 1,000 or fewer operating hours TIS since new on the effective date of this AD, remove the cylinder assembly from service within the next 320 operating hours TIS or within 1,160 operating hours TIS since new, whichever occurs first. (iii) For any affected cylinder assembly with more than 1,000 operating hours TIS since new on the effective date of this AD, remove the cylinder assembly from service within the next 160 operating hours or at next engine overhaul, whichever occurs first. (iv) For any affected cylinder assembly that has been overhauled, remove the cylinder assembly from service within the next 80 operating hours TIS after the effective date of this AD. (f) Installation Prohibitions After the effective date of this AD: (1) Do not repair, or reinstall onto any engine, any cylinder assembly removed per this AD. (2) Do not install any affected ECi cylinder assembly that has been overhauled, into any engine. (3) Do not install any engine that has one or more affected overhauled ECi cylinder assemblies, onto any aircraft. (4) Do not return to service any aircraft that has an engine installed with an ECi cylinder assembly subject to this AD, if the cylinder assembly has 1,000 or more operating hours TIS. (g) Alternative Methods of Compliance (AMOCs) The Manager, Delegation Systems Certification Office or Fort Worth Aircraft Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (h) Related Information (1) For more information about this AD, contact Jurgen E. Priester, Aerospace Engineer, Delegation Systems Certification Office, FAA, Rotorcraft Directorate, 10101 Hillwood Parkway, Fort Worth, TX 76177; phone: 817-222-5190; fax: 817-222-5785; email: jurgen.e.priester@faa.gov. (2) For ECi Service Instruction No. 99-8-1, Revision 9, dated February 23, 2009, which is not incorporated by reference in this AD, contact Continental Motors--San Antonio, 9503 Middlex Drive, San Antonio, TX 78217; phone: 210-820-8101; Internet: http://www.continentalsanantonio.com. (3) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. (i) Material Incorporated by Reference None.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/2016-16-12.json · aircraft systems.