Is AD 98-25-51 a recurring Airworthiness Directive?

No — AD 98-25-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-25-51 apply to?

AD 98-25-51 applies to Airbus — models A300-600, A310, A300. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-25-51

one-time

Official AD 98-25-51 · FR doc 98-33693 · 1998-12-22 · airframe

Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with Pratt & Whitney JT9D-7R4 or 4000 Series Engines

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) T98-25-51 that was sent previously to all known U.S. owners and operators of certain Airbus Model A310 and A300-600 airplanes by individual telegrams. This AD requires deactivation of both thrust reversers and a revision of the Airplane Flight Manual (AFM) to ensure that safe and appropriate performance is achieved during certain takeoff conditions. This action is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent inflight deployment of a thrust reverser, which could result in reduced controllability of the airplane.

Which aircraft AD 98-25-51 applies to

MakesAirbus

ModelsA300-600, A310, A300

The extracted text begins mid-document with boilerplate ('applies to each airplane identified in the preceding applicability provision'); the actual model list precedes this excerpt and was not captured. Models directly evidenced in this excerpt (via referenced FCOM revisions) are Airbus A310 series and A300-600 series airplanes. AD requires deactivation of both thrust reversers per Airbus AOT 78-08, dated November 30, 1998, and an AFM Limitations revision.

Whether AD 98-25-51 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 98-25-51 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.