Is AD 2001-04-13 a recurring Airworthiness Directive?

Yes — AD 2001-04-13 requires a repetitive inspection every 100 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2001-04-13 apply to?

AD 2001-04-13 applies to Eurocopter — models SA315, SA316, SA319. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-04-13

recurring

Official AD 2001-04-13 · FR doc 01-5164 · 2001-03-12 · airframe

Airworthiness Directives; Eurocopter France Model SA.315B, SA.316B, SA.316C, SE.3160, and SA.319B Helicopters

What this AD requires

This amendment supersedes an existing airworthiness directive (AD) for Eurocopter France (ECF) Model SA.315B, SA.316B, SA.316C, SE.3160, and SA.319B helicopters. That AD requires initial and recurring inspections of the main rotor blade (blade) spar for cracks. This amendment requires initial and recurring dye penetrant or eddy current inspections for a cracked blade spar at 100-hour time-in- service (TIS) intervals or 600 cycles, whichever occurs first, rather than the 25-hour TIS intervals currently required. This amendment is prompted by an accident in which an ECF Model SA.315B helicopter blade failed due to fatigue cracking. The actions specified by this AD are intended to prevent separation of a blade and subsequent loss of control of the helicopter.

Repetitive inspection. Re-inspect every 100 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2001-04-13 applies to

MakesEurocopter

ModelsSA315, SA316, SA319

Text cites 'Eurocopter France Service Bulletins (SB) SA 315 No. 05.39 and SA 316/319 No. 05.98', identifying the SA315 and SA316/SA319 model families. Requires repetitive dye-penetrant/eddy-current inspection of each main rotor blade spar for cracks, and verifying/applying a sealant bead around each blade cuff per Eurocopter France SB 65.137 R1, dated November 17, 1993.

Whether AD 2001-04-13 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 2001-04-13 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.