AD 83-15-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | HS 748 Series 2A | Airworthiness Directives; BRITISH AEROSPACE Model H.S. 748 Series 2A Airplanes |
Unsafe Condition
Relays 34 and 35 in the propeller control circuit may have improper resistance levels for internal insulation and incorrect wiring connections, which could cause multiple propeller feathering.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct an insulation resistance check of relays 34 and 35 within 100 hours time in service after the effective date. Replace relays with less than 50 megohms resistance. Reconnect wiring and conduct propeller auto feathering check as per Service Bulletin 61/31.
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Compliance Time
Within 100 hours time in service after the effective date of this AD, and prior to each installation of a replacement relay
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Affected Aircraft
BRITISH AEROSPACE Model H.S. 748 Series 2A airplanes certificated in all categories
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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