Is AD 2017-20776 a recurring Airworthiness Directive?

No — AD 2017-20776 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2017-20776 apply to?

AD 2017-20776 applies to Honeywell International Inc. — models TFE731-20, TFE731-40, TFE731. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2017-20776

one-time

AD 2017-20776 · 2017-09-28 · turbine engine

Airworthiness Directives; Honeywell International Inc. Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for all Honeywell International Inc. (Honeywell) TFE731-20 and TFE731-40 turbofan engines. This AD was prompted by two fan disks found with a manufacturing-caused flaw. This AD requires removing affected fan disks and replacing fan disks with a part eligible for installation. We are issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2017-20776 applies to

MakesHoneywell International Inc.

ModelsTFE731-20, TFE731-40, TFE731

Part-conditional — 3060287-2.

Applies only to engines with fan disk P/N 3060287-2 having a serial number listed in Table 9 of Honeywell SB TFE731-72-5256, Revision 0, dated October 7, 2016, that do NOT have 'T43374' marked adjacent to the engine P/N or S/N.

Whether AD 2017-20776 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 2017-20776 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.