Is AD 2003-16-04 a recurring Airworthiness Directive?

No — AD 2003-16-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2003-16-04 apply to?

AD 2003-16-04 applies to Pratt & Whitney Canada. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2003-16-04

one-time

Official AD 2003-16-04 · FR doc 03-19840 · 2003-08-06 · other

Airworthiness Directives; Pratt & Whitney Canada Turboprop Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) 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. This amendment requires replacing certain Stewart Warner part number (P/N) fuel heaters, installed on PWC engines, with redesigned fuel heaters. This amendment is prompted by several field incidents in which one or more of the three studs that attach the fuel filter bowl to the fuel heater have been partially or completely pulled free of the fuel heater housing. We are issuing this AD to prevent the separation of the fuel filter bowl from the fuel heater, which could result in a pressurized fuel leak and possible engine fire.

Which aircraft AD 2003-16-04 applies to

MakesPratt & Whitney Canada

Part-conditional — 10718, 10839.

Specific PWC engine model not stated in retrieved applicability text (applies broadly to 'PWC engines'); requires replacement of Stewart Warner fuel heater P/N series 10718 with P/N series 10839 (or other PWC-approved interchangeable part) to prevent fuel filter bowl separation and possible engine fire.

Whether AD 2003-16-04 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 2003-16-04 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.