Is AD 03-21153 a recurring Airworthiness Directive?

No — AD 03-21153 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 03-21153 apply to?

AD 03-21153 applies to Pratt & Whitney Canada — models PW125B, PW126A, PW127, PW127E, PW127F, PW127G, PW125, PW126. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 03-21153

one-time

AD 03-21153 · 2003-08-19 · turboprop engine

Airworthiness Directives; Pratt & Whitney Canada Turboprop Engines; Correction

What this AD requires

This document makes a correction to Airworthiness Directive (AD) 2003-16-04 that applies to Pratt & Whitney Canada (PWC) engine models PW118, PW118A, PW118B, PW119B, PW119C, PW120, PW120A, PW121, PW121A, PW123, PW123B, PW123C, PW123D, PW123E, PW123AF, PW124B, PW125B, PW126, PW126A, PW127, PW127B, PW127E, PW127F, PW127G, PW127H, and PW127J turboprop engines that was published in the Federal Register on August 6, 2003. Certain engine models were incorrectly included in the preamble section, under Summary and Supplementary Information, and in the regulatory section under Applicability. In addition, airplanes on which these engines are installed were incorrectly included in the regulatory section, under Applicability. This document corrects these items. In all other respects, the original document remains the same.

Which aircraft AD 03-21153 applies to

MakesPratt & Whitney Canada

ModelsPW125B, PW126A, PW127, PW127E, PW127F, PW127G, PW125, PW126

Federal Register correction notice; corrected applicability limits engines to PW125B, PW126A, PW127, PW127E, PW127F, and PW127G turboprop engines, installed on EMB-120; Fairchild Dornier 328; Fokker 50; and BAE Systems (Operations) Ltd. ATP airplanes

Whether AD 03-21153 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 03-21153 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.