Is AD 2013-10-51 a recurring Airworthiness Directive?

No — AD 2013-10-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2013-10-51

Q: Which aircraft does AD 2013-10-51 apply to?

AD 2013-10-51 applies to Eurocopter — models AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2013-10-51 · FR doc 2013-16682 · 2013-07-16 · airframe

Airworthiness Directives; Eurocopter France Helicopters

What this AD requires

We are publishing a new airworthiness directive (AD) for Eurocopter France Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters. This AD requires, before further flight, determining whether a single hydraulic main or tail rotor servo-control is installed on your helicopter. If a certain servo-control is installed, before the further flight, this AD requires replacing that servo-control. This AD was prompted by the discovery of excessive axial play detected on bearings installed on certain single hydraulic main and tail rotor servo-controls (servo-control). The excessive play could cause the distributor slide valve to jam in its sleeve. This condition could result in jamming the hydraulic flight controls, necessitating that the pilot cut off hydraulic power. This action would increase the pilot's workload, resulting in possible loss of helicopter control.

Which aircraft AD 2013-10-51 applies to

MakesEurocopter

ModelsAS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS350, AS355

Whether AD 2013-10-51 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 2013-10-51 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.