Is AD 2003-04-12 a recurring Airworthiness Directive?

No — AD 2003-04-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2003-04-12 apply to?

AD 2003-04-12 applies to Bell — models 427. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2003-04-12

one-time

Official AD 2003-04-12 · FR doc 03-4477 · 2003-02-28 · airframe

Airworthiness Directives; Bell Helicopter Textron Canada Limited Model 427 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for the specified Bell Helicopter Textron Canada (Bell) model helicopters that requires modifying the auxiliary fin assemblies and revising the Limitations section of the Rotorcraft Flight Manual (RFM) to reduce the never-exceed speed (Vne) for a tail rotor pedal stop failure. This amendment is prompted by several incidents of main rotor blades contacting the top of the fin that have resulted in an upper tuning weight (weight) becoming loose. The actions specified by this AD are intended to prevent a main rotor blade from striking an auxiliary fin, loss of a tuning weight, impact with a tail or main rotor blade, and subsequent loss of control of the helicopter.

Which aircraft AD 2003-04-12 applies to

MakesBell

Models427

Part-conditional — 427-035-836-101, 427-035-836-102, 427-035-836-105, 427-035-836-106.

Model identified via the part-number/ASB prefix 427 (Bell 427); explicit 'Model 427' text not present in the extracted excerpt. Modify auxiliary fin assembly P/N 427-035-836-101/-102/-105/-106 within 60 days per BHT ASB 427-01-07 dated 11/16/2001; after modification, reduce Vne for pedal stop failure from 80 KIAS to 60 KIAS.

Whether AD 2003-04-12 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 2003-04-12 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.