AD 2009-03-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Turbomeca S.A. Models Arriel 1E2, 1S, and 1S1 Turboshaft Engines |
| engine | Turbomeca | S | Airworthiness Directives; Turbomeca S.A. Models Arriel 1E2, 1S, and 1S1 Turboshaft Engines |
Unsafe Condition
A 'red disk' plug, not approved for service operation, was installed on the engine Fuel Control Unit 3-way union, leading to a high pressure leak event at the fuel pump outlet due to cracking of the plug. This could result in in-flight flame-out and/or fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the reference of the plug installed on the FCU 3-way union (9 932 30 706 0) and verify its torque is set between 1.3 and 1.5 daN.m, in accordance with Turbomeca Mandatory Service Bulletin 292 73 0817.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 100 operating hours from the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Turbomeca S.A. Models Arriel 1E2, 1S, and 1S1 turboshaft engines installed on, but not limited to, Eurocopter Deutschland MBB-BK 117 series and Sikorsky S-76A series helicopters.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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