AD 90-08-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | BAe 146-100A | Airworthiness Directives; British Aerospace Model BAe 146-100A, Model BAe 146-200A, and Model BAe 146-300A |
| aircraft | BAE Systems (Operations) Limited | BAe 146-200A | Airworthiness Directives; British Aerospace Model BAe 146-100A, Model BAe 146-200A, and Model BAe 146-300A |
| aircraft | BAE Systems (Operations) Limited | BAe 146-300A | Airworthiness Directives; British Aerospace Model BAe 146-100A, Model BAe 146-200A, and Model BAe 146-300A |
Unsafe Condition
Loss of wing flap asymmetry protection and reduced airplane controllability.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install an improved wing flap electronic control unit (ECU) in accordance with British Aerospace Service Bulletin 27-95-70420A. Install a warning placard on the front face of the ECU as specified in the same service bulletin. Alternate compliance may be approved by the Manager, Standardization Branch, ANM-113, FAA.
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Compliance Time
within 180 days after the effective date of this AD, unless previously accomplished
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Affected Aircraft
Model BAe 146-100A, Serial Numbers E1002 and subsequent; Model BAe 146-200A, Serial Numbers E2012 and subsequent; Model BAe 146-300A, Serial Numbers E3118 and subsequent
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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