Is AD 98-17-01 a recurring Airworthiness Directive?

No — AD 98-17-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-17-01 apply to?

AD 98-17-01 applies to Alliedsignal — models TFE731-2, TFE731-3, TFE731-4, TFE731. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-17-01

one-time

Official AD 98-17-01 · FR doc 98-21398 · 1998-08-11 · turbine engine

Airworthiness Directives; AlliedSignal Inc. TFE731 Series Turbofan Engines

What this AD requires

This amendment supersedes an existing airworthiness directive (AD), applicable to AlliedSignal Inc. TFE731 series turbofan engines, that currently requires the installation of a clamp assembly to support the rigid fuel tube. This action would require the installation of a clamp assembly to support the rigid fuel tube. This amendment requires installation of an improved flexible (flex) fuel tube. This amendment is prompted by reports of fuel leaks from a cracked fuel tube in engines that have already installed a clamp assembly in accordance with the current AD. The actions specified by this AD are intended to prevent cracking of the fuel tube and the subsequent leakage of fuel on or around electrical components, which can cause an engine fire.

Which aircraft AD 98-17-01 applies to

MakesAlliedsignal

ModelsTFE731-2, TFE731-3, TFE731-4, TFE731

Part-conditional — 3071051-1, 3073729-1, 3072886-1.

Applies only to engines with fuel tubes, part numbers 3071051-1, 3073729-1, or 3072886-1, installed. Installed on but not limited to Avions Marcel Dassault Falcon 10, 50, and 100 series; Cessna Model 650, Citation III, VI, and VII; Learjet 31 (M31), 35, 36 and 55 series; Raytheon British Aerospace HS-125 series; and Sabreliner NA-265-65.

Whether AD 98-17-01 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 98-17-01 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.