Is AD 2000-26-12 a recurring Airworthiness Directive?

No — AD 2000-26-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2000-26-12 apply to?

AD 2000-26-12 applies to Eurocopter — models EC135. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2000-26-12

one-time

Official AD 2000-26-12 · FR doc 00-33334 · 2001-01-02 · airframe

Airworthiness Directives; Eurocopter Deutschland GmbH Model EC135 P1 and EC135 T1 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for Eurocopter Deutschland GmbH (ECD) Model EC135 P1 and EC135 T1 helicopters that requires inspecting the hydraulic line shielding hose (hose), replacing any unairworthy hose with an airworthy hose, and installing a nylon cable tie. This amendment is prompted by the tail rotor drive shaft Thomas coupling contacting and chafing the hose that shields the fenestron tail rotor hydraulic lines. The actions specified by this AD are intended to prevent damage to the hose, leaking of accumulated hydraulic fluid to an area with an ignition source, inflight fire, and subsequent loss of control of the helicopter.

Which aircraft AD 2000-26-12 applies to

MakesEurocopter

ModelsEC135

Text cites 'Eurocopter Alert Service Bulletin EC 135-29A-003', identifying the EC135 model family. Requires, within 50 hours TIS, inspecting a hydraulic hose and installing a nylon cable tie per the Accomplishment Instructions of the referenced ASB, dated February 24, 1999; replacing any damaged hose within 25 hours TIS. Completing the inspection/replacement/cable-tie installation is terminating action for this AD.

Whether AD 2000-26-12 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 2000-26-12 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.