AD 73-12-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | H.P. 137 Jetstream Mk. 1 | Airworthiness Directives; Handley Page (Jetstream Aircraft LTD) Model HP-137 Mk 1 Airplanes |
Unsafe Condition
The 30 amp fuse F10 in the D.C. power control box may fail to prevent unnecessary interruption of current flow to the battery bus and non-essential bus.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the 30 amp fuse F10 with a 25 amp Klixon circuit breaker P/N D6761-1-25 following Jetstream Aircraft Limited Modification No. 5006, Parts 1 and 2, or an FAA-approved equivalent.
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Compliance Time
within the next 50 hours' time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Handley Page (Jetstream Aircraft LTD) Model HP-137 Mk 1 airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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