Airworthiness Directive · Amendment 39-18548 · 2700 swashplate ring, cardan ring, bolt, mixing lever gear unit
Airbus Helicopters Deutschland GmbH (Previously Eurocopter Deutschland GmbH) (Airbus Helicopters)
Superseded. A later AD replaced this one: AD 2021-11-22. Comply with the one in force.
This AD applies to Model EC135P1, EC135P2, EC135P2+, EC135T1, EC135T2, and EC135T2+ helicopters, certificated in any category.
We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC135P1, EC135P2, EC135P2+, EC135T1, EC135T2, and EC135T2+ helicopters. This AD requires reducing the life limit of certain parts and removing each part that has reached its life limit. The actions of this AD are intended to reduce the life limits of certain critical parts to prevent failure of a part and subsequent loss of control of the helicopter.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Before further flight:
(1) Revise the life limit of each part listed in paragraphs (e)(1)(i) and (ii) in the Airworthiness Limitations Section of the applicable maintenance manual and record the revised life limit on the component history card or equivalent record as follows:
(i) For swashplate parts:
(A) Ring (bearing ring), part number (P/N) L623M2001214, reduce the life limit from 8,300 hours time-in-service (TIS) to 8,000 hours TIS.
(B) Ring (control ring), P/N L623M2001213, reduce the life limit from 8,300 hours TIS to 8,000 hours TIS.
(C) Cardan ring (two-part), P/N L623M2005205, reduce the life limit from 14,400 hours TIS to 12,900 hours TIS.
(D) Bolt (control ring), P/N L671M7001215, reduce the life limit from 14,400 hours TIS to 12,900 hours TIS.
(E) Bolt (sliding sleeve), P/N L623M2006206 and P/N L623M2006213, reduce the life limit from 14,400 hours TIS to 12,900 hours TIS.
(ii) For mixing lever gear unit parts:
(A) Forked lever assembly, P/N L671M3012102, reduce the life limit from 9,000 hours TIS to 8,700 hours TIS.
(B) Hinged support, P/N L671M7003210, reduce the life limit from 8,700 hours TIS to 8,400 hours TIS.
(C) Bolt, P/N L671M7001220, reduce the life limit from 8,700 hours TIS to 8,400 hours TIS.
(2) Remove from service any part listed in paragraph (e)(1) of this AD that has reached or exceeded its newly revised life limit.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
