Is AD 2016-21-07 a recurring Airworthiness Directive?

Yes — AD 2016-21-07 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2016-21-07

Q: Which aircraft does AD 2016-21-07 apply to?

AD 2016-21-07 applies to Honeywell International Inc. — models TPE331-1, TPE331-2, TPE331-2UA, TPE331-3U, TPE331-3UW, TPE331-5, TPE331-5A, TPE331-5AB. Serial/part conditions may narrow it to specific aircraft.

recurring

Official AD 2016-21-07 · FR doc 2016-25268 · 2016-10-24 · turboprop engine

Airworthiness Directives; Honeywell International Inc. Turboprop Engines

What this AD requires

We are superseding airworthiness directive (AD) 2015-12-04 for all Honeywell International Inc. (Honeywell) TPE331-1, -2, -2UA, -3U, - 3UW, -5, -5A, -5AB, -5B, -6, -6A, -10, -10AV, -10GP, -10GT, -10P, -10R, -10T, -10U, -10UA, -10UF, -10UG, -10UGR, -10UR, -11U, -12JR, -12UA, - 12UAR, and -12UHR turboprop engines with certain Woodward fuel control unit (FCU) assemblies, installed. AD 2015-12-04 required initial and repetitive dimensional inspections of the affected fuel control drives and insertion of certain airplane operating procedures into the applicable flight manuals. This AD corrects the compliance requirements and relaxes the inspection interval. This AD was prompted by a request to change compliance time from 50 hours to 100 hours for affected fuel controls. We are issuing this AD to prevent failure of the fuel control drive, damage to the engine, and damage to the airplane.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2016-21-07 applies to

MakesHoneywell International Inc.

ModelsTPE331-1, TPE331-2, TPE331-2UA, TPE331-3U, TPE331-3UW, TPE331-5, TPE331-5A, TPE331-5AB, TPE331-5B, TPE331-6, TPE331-6A, TPE331-10, TPE331-10AV, TPE331-10GP, TPE331-10GT, TPE331-10P, TPE331-10R, TPE331-10T, TPE331-10U, TPE331-10UA, TPE331-10UF, TPE331-10UG, TPE331-10UGR, TPE331-10UR, TPE331-11U, TPE331-12JR, TPE331-12UA, TPE331-12UAR, TPE331-12UHR, TPE331

Part-conditional — 869199-9, 869199-10, 869199-11, 869199-12, 869199-13, 869199-14, 869199-16, 869199-17.

Applies only to engines with Woodward fuel control unit (FCU) assemblies having Honeywell part numbers listed in Table 1 to paragraph (c) of the AD, grouped by engine model, installed.

Whether AD 2016-21-07 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 2016-21-07 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.