AD 2012-08-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
Unsafe Condition
Reports of the air driven generator (ADG) failing to power essential buses during functional tests, due to the low threshold setting of the circuit protection on the ADG's generator control unit (GCU) preventing the ADG from supplying power to the essential buses.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the existing ADG GCU (Bombardier P/N 604-90800-7 or Hamilton Sundstrand P/N 761341A) and install a new or serviceable ADG GCU (Bombardier P/N 604-90800-27 or Hamilton Sundstrand P/N 761341B) in accordance with specified service bulletins.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 36 months after the effective date of this AD.
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Affected Aircraft
Bombardier, Inc. Model CL-600-2B16 (CL-604 Variant) airplanes, certificated in any category, serial numbers 5408 through 5665 inclusive, and 5701 through 5856 inclusive.
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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