Is AD 98-23-04 a recurring Airworthiness Directive?

No — AD 98-23-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-23-04 apply to?

AD 98-23-04 applies to Eurocopter. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-23-04

one-time

Official AD 98-23-04 · FR doc 98-29377 · 1998-11-05 · airframe

Airworthiness Directives; Eurocopter France Model AS 332C, L, and L1 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Eurocopter France Model AS 332C, L, and L1 helicopters that requires replacing main rotor blades with modified main rotor blades. This amendment is prompted by reports of an investigation that found broken braids on main rotor blade de-icers. The actions specified by this AD are intended to prevent loss of deicing capabilities of the main rotor blades, adverse performance during flight in icing conditions, and subsequent loss of control of the helicopter.

Which aircraft AD 98-23-04 applies to

MakesEurocopter

Whether AD 98-23-04 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 98-23-04 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.