AD 99-06-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | AS332C | Airworthiness Directives; Eurocopter France Model AS 332C, L, and L1, and L2 Helicopters |
| aircraft | Airbus Helicopters | AS332L | Airworthiness Directives; Eurocopter France Model AS 332C, L, and L1, and L2 Helicopters |
| aircraft | Airbus Helicopters | AS332L1 | Airworthiness Directives; Eurocopter France Model AS 332C, L, and L1, and L2 Helicopters |
| aircraft | Airbus Helicopters | AS332L2 | Airworthiness Directives; Eurocopter France Model AS 332C, L, and L1, and L2 Helicopters |
Unsafe Condition
Loss of electrical continuity between terminals of installed Crouzet single-pole circuit breakers (part numbers 84 400 028 through 84 400 037) can cause improper installation, loss of electrical power to instrumentation, and subsequent loss of control of the helicopter.
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Required Actions
Inspect specified Crouzet circuit breakers according to Service Bulletin 01.00.49 procedures, replace any with loss of electrical continuity, and ensure prior inspection before reinstallation. Replacement with type 84-402(x) circuit breakers terminates AD requirements.
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Compliance Time
On or before 100 hours time-in-service (TIS) or within the next 3 calendar months for initial inspection, and 500 hours TIS or 6 calendar months for remaining inspections. Alternative compliance may be approved by FAA.
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Affected Aircraft
Eurocopter France Model AS 332C, L, L1, and L2 helicopters with Crouzet circuit breaker part numbers 84 400 028 through 84 400 037 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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