Is AD 97-08-01 a recurring Airworthiness Directive?

No — AD 97-08-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 97-08-01 apply to?

AD 97-08-01 applies to Cfm International — models CFM56-3, CFM56-3B, CFM56-3C, CFM56. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 97-08-01

one-time

Official AD 97-08-01 · FR doc 97-10357 · 1997-04-22 · turbine engine

Airworthiness Directives; CFM International CFM56-3, -3B, and -3C Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to CFM International CFM56-3, -3B, -3C series turbofan engines, that requires a reduction of the low cycle fatigue (LCF) retirement lives for certain fan disks. This amendment is prompted by the results of a refined life analysis performed by the manufacturer which revealed minimum calculated LCF lives significantly lower than published LCF retirement lives. The actions specified by this AD are intended to prevent a LCF failure of the fan disk, which could result in an uncontained engine failure and damage to the aircraft.

Which aircraft AD 97-08-01 applies to

MakesCfm International

ModelsCFM56-3, CFM56-3B, CFM56-3C, CFM56

Part-conditional — 335-014-509-0, 335-014-511-0.

Applies only to engines with fan disks P/N 335-014-509-0 or 335-014-511-0 installed, that are currently operating at, or have previously operated at, the Category C thrust rating.

Whether AD 97-08-01 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 97-08-01 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.