Airworthiness Directive · Amendment 39-15200 · Turbomeca Arriel 2B1 Turboshaft Engines
Turbomeca Arriel 2B1 Turboshaft Engines
Superseded. A later AD replaced this one: AD 2007-19-09 R1. Comply with the one in force.
This AD applies to Turbomeca Arriel 2B1 turboshaft engines. These engines are installed on, but not limited to, Eurocopter AS 350 B3 and EC 130 B4 helicopters.
We are superseding an existing airworthiness directive (AD) by adopting a new AD for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) provided by the aviation authority of France to identify and correct an unsafe condition on Turbomeca Arriel 2B1 turboshaft engines. The MCAI states the following:
Unless already done, do the following actions.
(1) Replace the HMU with a serviceable HMU before the HMU accumulates 1,500 hours-since-new, since-last-overhaul, or since-incorporation of Turbomeca Service Bulletin (SB) No. 292 73 2105; or by July 30, 2007, whichever occurs later.
(2) Thereafter, replace HMUs with a serviceable HMU at every 1,500 hours-since-new, since-last-overhaul, or since-incorporation of Turbomeca SB No. 292 73 2105, whichever occurs later.
(3) For the purposes of this AD, a serviceable HMU is an HMU fitted with a new constant delta P diaphragm in accordance with Turbomeca Service Bulletin (MSB) No. 292 73 2818, Original Issue, dated October 18, 2006, or Update No. 1, dated April 3, 2007.
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.
