AD 91-04-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | BAe 146-100A | Airworthiness Directives; BRITISH AEROSPACE Model BAe 146-100A, -200A, and -300A Series Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-200A | Airworthiness Directives; BRITISH AEROSPACE Model BAe 146-100A, -200A, and -300A Series Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-300A | Airworthiness Directives; BRITISH AEROSPACE Model BAe 146-100A, -200A, and -300A Series Airplanes |
Unsafe Condition
Loss of all AC electrical power due to failure of the remote controlled circuit breaker (RCCB), Part Number SM601BA40A12 or SM601BA40A13, in the AC powered hydraulic pump electric power circuit.
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Required Actions
Remove the remote controlled circuit breaker (RCCB) with Part Number SM601BA40A12 or SM601BA40A13 from the AC powered hydraulic pump electric power circuit. Replace it with the modified RCCB, Part Number SM601BA40A14, following British Aerospace Service Bulletin 24-69-70484A, Revision 1.
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Compliance Time
Within 90 days after the effective date of this AD
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Affected Aircraft
British Aerospace Model BAe 146-100A, -200A, and -300A series airplanes listed in British Aerospace Service Bulletin 24-69-70484A, Revision 1, dated July 25, 1990.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
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