AD 2012-23-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | Deutschland | Airworthiness Directives; Eurocopter Deutschland Helicopters |
Unsafe Condition
An internal short circuit in certain Generator Control Units (GCUs), part number 51530-021EI with no modification (MOD), MOD A, or MOD B.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace all affected GCUs with an airworthy GCU within the next 300 hours time-in-service or 6 months, whichever occurs first. Do not install a GCU P/N 51530-021-EI with no MOD, MOD A, or MOD B on any helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 300 hours time-in-service or 6 months, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter Deutschland GmbH Model MBB-BK117 C-2 helicopters with a Generator Control Unit (GCU), part number 51530-021EI with no modification (MOD), MOD A, or MOD B installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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