Is AD 98-07-02 a recurring Airworthiness Directive?

No — AD 98-07-02 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-07-02 apply to?

AD 98-07-02 applies to Cfm International — models CFM56-2, CFM56-3, CFM56-3B, CFM56-3C, CFM56. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-07-02

one-time

Official AD 98-07-02 · FR doc 98-7560 · 1998-03-30 · turbine engine

Airworthiness Directives; CFM International CFM56-2, -3, -3B, and -3C Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to CFM International CFM56-2, -3, -3B, and -3C series turbofan engines. This action requires the removal from service of certain No. 3 bearing rear stationary air/oil seals, replacement with serviceable parts, and the installation of retention bushings. This action also requires the removal from service of high pressure compressor rotor (HPCR) stage 1-2 spools that have contacted the outer cone of the seal. This amendment is prompted by several reports of outer cone separation of the No. 3 bearing rear stationary air/oil seal. The actions specified in this AD are intended to prevent rubs between the outer cone of the No. 3 bearing rear stationary air/oil seal and the HPCR stage 1-2 spool, which could result in a potential uncontained failure of the HPCR stage 1-2 spool, and damage to the aircraft.

Which aircraft AD 98-07-02 applies to

MakesCfm International

ModelsCFM56-2, CFM56-3, CFM56-3B, CFM56-3C, CFM56

Installed on but not limited to McDonnell Douglas DC-8 series and Boeing 737 series aircraft.

Whether AD 98-07-02 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 98-07-02 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.