Is AD 2002-15-51 a recurring Airworthiness Directive?

No — AD 2002-15-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2002-15-51 apply to?

AD 2002-15-51 applies to Sikorsky. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2002-15-51

one-time

Official AD 2002-15-51 · FR doc 02-24994 · 2002-10-03 · airframe

Airworthiness Directives; Sikorsky Aircraft Corporation Model S76A, B, and C Helicopters

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2002-15-51, sent previously to all known U.S. owners and operators of the specified Sikorsky Aircraft Corporation (Sikorsky) helicopters by individual letters. This AD requires, before further flight, identifying and removing any main rotor blade (blade) that has been damaged by lightning and any blade with an unclear service history. This AD is prompted by the failure of a blade due to lightning strike damage. The actions specified by this AD are intended to prevent failure of a blade and subsequent loss of control of the helicopter.

Which aircraft AD 2002-15-51 applies to

MakesSikorsky

Main rotor blade removal for lightning-strike damage per Sikorsky ASB No. 76-65-55A; specific blade serial numbers to remove: A086-00167, 00429, 00798, 00999, 01165, 01168, 01291, 02504 (blade S/Ns, not helicopter serial ranges). '76-65' SB numbering suggests S-76 model family but no explicit model name is stated in the extracted text.

Whether AD 2002-15-51 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 2002-15-51 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.