Is AD 98-07-20 a recurring Airworthiness Directive?

No — AD 98-07-20 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-07-20 apply to?

AD 98-07-20 applies to Eurocopter France — models AS-332C, AS-332L, AS-332L1, AS-332. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-07-20

one-time

Official AD 98-07-20 · FR doc 98-8583 · 1998-04-02 · airframe

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

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Eurocopter France Model AS 332C, L, and L1 helicopters that have not been modified in accordance with Eurocopter France Modifications 332A07-41.569 and 332A07-66.150. This action requires revisions to the Limitations section of the Rotorcraft Flight Manual (RFM) to prohibit flight into meteorological conditions that may produce lightning for helicopters that are not equipped with lightning- resistant tail rotor blades. A terminating action is provided in the AD by the installation of tail rotor blades having a lightning-resistant system. This amendment is prompted by the forced ditching of a Model AS 332 helicopter after experiencing a lightning strike. The actions specified in this AD are intended to prevent damage to the tail rotor blades that could result in loss of a tail rotor blade and subsequent loss of control of the helicopter.

Which aircraft AD 98-07-20 applies to

MakesEurocopter France

ModelsAS-332C, AS-332L, AS-332L1, AS-332

Part-conditional — 33A12.0010, 33A12.0020.

Applies only to AS-332C/L/L1 helicopters with tail rotor blades P/N 33A12.0010 or 33A12.0020 (non-lightning-reinforced) installed.

Whether AD 98-07-20 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 98-07-20 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.