AD 98-21-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 3101 | Airworthiness Directives; British Aerospace Jetstream Model 3101 Airplanes |
Unsafe Condition
A cross connection in the No. 1 and No. 2 vertical gyroscopes could result in navigational errors during flight.
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Required Actions
Shorten and re-clip the cable looms on the No. 1 and No. 2 vertical gyroscopes, install a warning label part number JA-891143-K1 adjacent to the gyroscopes, and perform an operational check of the gyroscopes in accordance with Jetstream Service Bulletin 34-JA 891143 dated March 2, 1990.
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Compliance Time
Required prior to further flight after the effective date of this AD, unless already accomplished.
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Affected Aircraft
Jetstream Model 3101 airplanes, serial numbers 703, 705, and 707, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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