Is AD 2002-08-03 a recurring Airworthiness Directive?

No — AD 2002-08-03 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2002-08-03 apply to?

AD 2002-08-03 applies to Enstrom — models F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, 280FX. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2002-08-03

one-time

Official AD 2002-08-03 · FR doc 02-9144 · 2002-04-17 · airframe

Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, and 280FX Helicopters

What this AD requires

This amendment supersedes an existing airworthiness directive (AD) for Enstrom Helicopter Corporation (EHC) Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, and 280FX helicopters. That AD currently requires determining the radius of the shaft fillet, performing certain visual and dye-penetrant inspections before further flight, and replacing certain main rotor transmissions. This amendment requires the same actions as the previous AD, adds additional main rotor gear box part numbers, and corrects various errors contained in the current AD. This amendment is prompted by a commenter who noted that two additional main rotor gear box part numbers should have been included in the AD. The actions specified by this AD are intended to prevent shaft failure and subsequent loss of control of the helicopter.

Which aircraft AD 2002-08-03 applies to

MakesEnstrom

ModelsF-28, F-28A, F-28C, F-28F, 280, 280C, 280F, 280FX

Part-conditional — 28-13101-1, 28-13101-1-R, 28-13101-3, 28-13101-3-R, 28-13101-5, 28-13101-5-R, 28-13101-8, 28-13101-8-R.

Applicability keyed to main rotor transmission P/N and shaft upper fillet radius (0.13 in. vs 0.5 in.) per Table 1 model effectivity; required replacement action differs by EHC (Enstrom) model family.

Whether AD 2002-08-03 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 2002-08-03 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.