AD 2013-04-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE | SYSTEMS (OPERATIONS) LIMITED | Airworthiness Directives; BAE SYSTEMS (OPERATIONS) LIMITED Airplanes |
Unsafe Condition
Moisture ingress in certain ceramic terminal blocks can degrade insulation resistance, potentially leading to latent failure of the number 2 fire bottle and failure to discharge during an engine fire.
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Required Actions
Perform a one-time insulation resistance test on each terminal block within 4,000 flight cycles or 18 months, whichever occurs first. Replace any terminal block with a value less than 50 megohms before next flight.
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Compliance Time
Within 4,000 flight cycles or 18 months, whichever occurs first after the effective date.
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Affected Aircraft
All BAE SYSTEMS (OPERATIONS) LIMITED Model BAe 146-100A, -200A, and -300A airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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