Is AD 98-19-10 a recurring Airworthiness Directive?

No — AD 98-19-10 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-19-10 apply to?

AD 98-19-10 applies to Cfm International — models CFM56-3, CFM56-3B, CFM56-3C, CFM56. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-19-10

one-time

Official AD 98-19-10 · FR doc 98-24183 · 1998-09-11 · 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) that is applicable to CFM International (CFMI) CFM56-3, -3B, and -3C series turbofan engines. This action requires, on aircraft with two affected engines installed, removal of one affected engine from an aircraft, and replacement with a serviceable engine, or replacement of a suspect accessory gearbox (AGB) starter gearshaft with a serviceable gearshaft within 350 hours time in service (TIS) after the effective date of this AD, or by September 1, 1998, whichever occurs first. This action also requires, on aircraft with only one affected engine installed, removal of the affected engine from the aircraft, and replacement with a serviceable engine , or replacement of thea suspect starter gearshaft with a serviceable gearshaft within 2,100 hours TIS after the effective date of this AD, or by February 1, 1999, whichever occurs first. This amendment is prompted by reports of two inflight engine shutdowns caused by an AGB starter gearshaft failure. The actions specified in this AD are intended to prevent an AGB starter gearshaft failure, which can result in an inflight engine shutdown, and on aircraft with two affected engines installed, possible dual inflight engine shutdown and forced landing.

Which aircraft AD 98-19-10 applies to

MakesCfm International

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

Applies only to engines having engine serial numbers (ESNs) identified in Table 1 of CFMI CFM56-3/-3B/-3C Service Bulletin (SB) No. 72-877, Revision 1, dated June 15, 1998. Installed on but not limited to Boeing 737 series aircraft.

Whether AD 98-19-10 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 98-19-10 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.