AD 90-07-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | BAe 146-100A | Airworthiness Directives; British Aerospace Model BAe-146 Series Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-200A | Airworthiness Directives; British Aerospace Model BAe-146 Series Airplanes |
| aircraft | BAE Systems (Operations) Limited | BAe 146-300A | Airworthiness Directives; British Aerospace Model BAe-146 Series Airplanes |
Unsafe Condition
Brake drag or complete loss of braking due to loose quick-disconnect couplings in the yellow and auxiliary systems hydraulic lines to the wheel brake units on the left and right main landing gear.
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Required Actions
Inspect the quick-disconnect couplings in the yellow and auxiliary systems hydraulic lines to the wheel brake units on the left and right main landing gear for tightness, retighten to finger-tight torque, and secure with a corrosion-resistant steel lockwire per British Aerospace Service Bulletin 32-A101. Alternate compliance or time adjustment may be approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
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Compliance Time
within 30 days after the effective date of this AD, unless previously accomplished
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Affected Aircraft
British Aerospace Model BAe-146 series airplanes with Modification HCM50075A, B, and C incorporated
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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