Is AD 2012-10-52 a recurring Airworthiness Directive?

No — AD 2012-10-52 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2012-10-52 apply to?

AD 2012-10-52 applies to Hartzell Engine Technologies. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2012-10-52

one-time

Official AD 2012-10-52 · FR doc 2012-13855 · 2012-06-11 · appliance

Airworthiness Directives; Hartzell Engine Technologies Turbochargers

What this AD requires

We are adopting a new airworthiness directive (AD) for Cessna 206, 207, and 210 airplanes with Hartzell Engine Technologies (HET) turbochargers, part numbers (P/Ns) 406610-0005 and 406610-9005, installed. This emergency AD was sent previously to all known U.S. owners and operators of these airplanes. This AD requires removing the affected turbochargers from service before further flight. This AD was prompted by a report of an HET turbocharger causing an engine in-flight power rollback. We are issuing this AD to prevent turbocharger bearing seizure, failed turbocharger components, and damage to the airplane.

Which aircraft AD 2012-10-52 applies to

MakesHartzell Engine Technologies

Part-conditional — 406610-0005, 406610-9005, 409836-0005.

Applies to: (1) turbocharger P/N 406610-0005 or 406610-9005 with serial numbers listed in HET Alert Service Bulletin No. 047, dated May 8, 2012, Table 1; (2) turbochargers P/N 406610-0005 or 406610-9005 overhauled or repaired on or after January 1, 2012 with center housing P/N 409836-0005 and date code H-0112; or (3) center housings P/N 409836-0005 sold as piece parts in field/distributor inventory with date code H-0112. Installed on, but not limited to, Cessna 206, 207, and 210 airplanes with Continental Motors, Inc. TSIO-520-C, -G, -H, -M, and -R reciprocating engines installed

Whether AD 2012-10-52 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 2012-10-52 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.