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Airworthiness Directive 98-17-13

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Official AD 98-17-13 · FR doc 98-22242 · 1998-08-19 · airframe

Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes Equipped with Rolls-Royce Model RB211-524G/H Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747 and 767 series airplanes. This action requires modification of the engine fire detection system. This amendment is prompted by a report of a combustor burn-through event that damaged the engine fire detection system such that no fire warning message was annunciated in the flight deck. The actions specified in this AD are intended to prevent failure of the engine fire detection system to annunciate a fire warning message to the flight crew following a severe engine failure, which could lead to delayed or improper flight crew response to the engine failure.

Which aircraft AD 98-17-13 applies to

MakesBoeing
Models747, 767

Applies to Boeing Model 747 and 767 series airplanes' engine fire detection system; requires modification at next engine or combustor module shop visit (no later than 5 years after effective date) per Boeing Alert SB 747-26A2250 (Model 747) or 767-26A0103 (Model 767), as applicable.

Whether AD 98-17-13 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 98-17-13 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.