Airworthiness Directive 2012-25896

one-time
AD 2012-25896 · 2012-10-23 · airframe

Airworthiness Directives; Agusta S.p.A. Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A109S helicopters to require modifying the electrical power distribution system to carry a higher electrical load. This AD was prompted by an electrical failure on an Agusta Model A109E helicopter that resulted from "inadequate functioning of the 35 amperes (amps) BATT BUS circuit breaker." The actions of this AD are intended to require modifying the electrical power distribution system to prevent failure of the circuit breaker, loss of electrical power to instruments powered by the "BATT BUS" system, and subsequent loss of control of the helicopter.

Which aircraft AD 2012-25896 applies to

MakesAgusta
ModelsA109S, A109
Serial-conditional — narrows to serials ?–22151.

Whether AD 2012-25896 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 complianceThe specific action taken (inspected, replaced, modified) and to what revision.
DateWhen the work was done.
Aircraft timeTotal time in service / tach at compliance — how recurring next-due is computed.
Signature & certificateThe A&P/IA who returned it to service, with certificate number.
Is AD 2012-25896 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.