AD 86-21-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 3101 | Airworthiness Directives; British Aerospace BAe Jetstream Model 3101 Airplanes |
Unsafe Condition
Chafing of the flap jack lock valve pressure pipe BAe P/N 616302 and loss of hydraulic fluid.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the hydraulic pressure pipe for chafing per BAe ASB 27-A-JA860222. If chafing exists, replace the pipe and modify the pod with an aperture per AMC S/B 25-0002(-2). If no chafing, modify the pod and measure clearance between pipe and pod membrane screws. Depending on clearance, install aperture cover plate or further modify the pod. Compliance must occur before further flight if chafing is found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next fifty (50) landings after the effective date of this AD, unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
British Aerospace BAe Jetstream Model 3101 (all serial numbers) with Arkansas Modification Center STC SA5900SW baggage pod serial numbers 002 through 044 inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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