Is AD 2003-03-21 a recurring Airworthiness Directive?

No — AD 2003-03-21 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2003-03-21 apply to?

AD 2003-03-21 applies to Pratt & Whitney Canada — models PW530A, PW535A, PW545A, PW500. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2003-03-21

one-time

Official AD 2003-03-21 · FR doc 03-2632 · 2003-02-05 · turbine engine

Airworthiness Directives; Pratt & Whitney Canada PW500 Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Pratt & Whitney Canada (PWC) PW500 series turbofan engines. This action requires a one-time visual inspection and re- marking, or in lieu of inspection, replacement of certain part numbers (P/N's) of the flexible fuel tube located between the fuel/oil heat exchanger and the integral fuel control unit-fuel pump. This amendment is prompted by reports of fuel found dripping from engine nacelles caused by leaking flexible fuel tubes. The actions specified in this AD are intended to prevent a fire in the engine nacelle.

Which aircraft AD 2003-03-21 applies to

MakesPratt & Whitney Canada

ModelsPW530A, PW535A, PW545A, PW500

Part-conditional — 30J2285-01, 3054416-01, 30J2323-01, 30J2578-01, 3058704-01, 30J2579-01.

Flexible fuel tube replacement (old P/Ns 30J2285-01/3054416-01/30J2323-01 to new P/Ns 30J2578-01/3058704-01/30J2579-01 for PW530A/PW535A/PW545A engines respectively) or, as an alternative, one-time inspection and re-marking per PWC SB PW500-72-30217.

Whether AD 2003-03-21 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 2003-03-21 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.