AD 94-05-08
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
A single phase fault current can cause sequential failure of all onboard main electrical generators and subsequent loss of electrical power sources onboard the airplane.
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Required Actions
Modify the electrical power supply system by installing Modification HCM70488B in accordance with British Aerospace Service Bulletin SB.24-91-70488B&C, Revision 1 or 2. An alternative method of compliance may be approved if it provides an acceptable level of safety.
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Compliance Time
Within 3,100 hours time-in-service after the effective date of this AD
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Affected Aircraft
British Aerospace Model BAe 146-100A, -200A, and -300A series airplanes, on which Modification HCM70488B has not been accomplished.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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