Is AD 2020-15-01 a recurring Airworthiness Directive?

No — AD 2020-15-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2020-15-01 apply to?

AD 2020-15-01 applies to Airbus Helicopters — models EC155B, EC155B1, EC155. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2020-15-01

one-time

Official AD 2020-15-01 · FR doc 2020-14940 · 2020-07-13 · airframe

Airworthiness Directives; Airbus Helicopters

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD requires modifying the wiring of the attitude and heading reference system (AHRS) connector. This AD was prompted by a report of wiring of the AHRS contrary to approved design specifications. The actions of this AD are intended to address an unsafe condition on these products.

Which aircraft AD 2020-15-01 applies to

MakesAirbus Helicopters

ModelsEC155B, EC155B1, EC155

Whether AD 2020-15-01 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 2020-15-01 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.