AD 86-24-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 3101 | Airworthiness Directives; British Aerospace Model Jetstream 3101 Airplanes |
Unsafe Condition
Loss of main busbar supply could result in inadequate lighting supply to the standby artificial horizon and altitude alert controller indicator.
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Required Actions
Incorporate modification JM7490 by changing the electrical supply source for the right upper center panel instrument lighting converter unit from the 28V d.c. main busbar to the 28V d.c. essential busbar. Aircraft may be flown to a location where this AD can be accomplished. Equivalent compliance may be approved by the FAA Manager, Aircraft Certification Staff.
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Compliance Time
within the next 200 hours time-in-service after the effective date of this AD
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Affected Aircraft
British Aerospace Regional Aircraft Model Jetstream 3101 (Serial Numbers 601, 603, 604, 606 to 610, 614, 620, 622, 624 to 626, 628 to 632, 634 to 636, and 638 to 653 inclusive)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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