Is AD 2011-16087 a recurring Airworthiness Directive?

No — AD 2011-16087 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2011-16087

Q: Which aircraft does AD 2011-16087 apply to?

AD 2011-16087 applies to Lycoming Engines, Continental Motors — models TSIO-520-BE, TSIO-360-MB, TSIO-360-SB, TIO-540-AK1A, TSIO-360-RB, TIO-540-AE2A, TSIO-360-H, O-540-L3C5D. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 2011-16087 · 2011-06-28 · reciprocating engine

Airworthiness Directives: Lycoming Engines (Type Certificate Previously Held by Textron Lycoming) and Teledyne Continental Motors (TCM) Turbocharged Reciprocating Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires inspecting certain Lycoming and TCM reciprocating engines with certain Hartzell Engine Technologies, LLC (HET) turbochargers installed, and disassembly and cleaning of the turbocharger center housing and rotating assembly (CHRA) cavities of affected turbochargers. This AD was prompted by a turbocharger failure due to machining debris left in the cavities of the CHRA during manufacture. We are issuing this AD to prevent seizure of the turbocharger turbine, which could result in damage to the engine, and smoke in the airplane cabin.

Which aircraft AD 2011-16087 applies to

MakesLycoming EnginesContinental Motors

ModelsTSIO-520-BE, TSIO-360-MB, TSIO-360-SB, TIO-540-AK1A, TSIO-360-RB, TIO-540-AE2A, TSIO-360-H, O-540-L3C5D, TSIO-520-T, TO-360-E1A6D, TIO-540-AG1A, TIO-540-AF1A, TIO-540-AF1B, TIO-540-AH1A, TIO-541-E1D4, TIO-541-E1C4, TIGO-541-E, GTSIO-520-F, GTSIO-520-K, GTSIO-520-D, GTSIO-520-H, TSIO-520, TSIO-360, TIO-540, TO-360, TIO-541, TIGO-541, GTSIO-520, O-540

Serial-conditional — narrows to serials ?–H-NJL00003, ?–H-NJR00002.

Part-conditional — 406990-9004, 407540-0003, 407540-9003, 407800-9003, 408590-9012, 048610-0001, 465292-0001, 465292-9001.

Applies only to affected engines with Hartzell Engine Technologies, LLC (HET) turbocharger models TA3601, TAO401, TAO402, TAO411, TAO413, T1879, T18A21, T18A44, THO867, or TEO659 installed, where: (1) the turbocharger is newly manufactured (-0000 series) before S/N H-NJL00003, or rebuilt (-9000 series) before S/N H-NJR00002; (2) the turbocharger has less than 50 hours time-in-service (TIS) on the effective date of the AD; (3) the turbocharger has a part number listed in Table 2 (KAES) or Table 3 (Original Equipment) of the AD; and (4) the turbocharger has a 'slanted A' foundry mark on the center housing and rotating assembly (CHRA). Does not apply to turbochargers with more than 50 hours TIS on the effective date, turbochargers with a circled 'JT' foundry mark, or engines with new/overhauled turbochargers installed on or before September 2001.

Whether AD 2011-16087 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2011-16087 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.