AD 99-06-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | H.P. 137 Jetstream Mk. 1 | Airworthiness Directives; British Aerospace HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream 3201 | Airworthiness Directives; British Aerospace HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 200 | Airworthiness Directives; British Aerospace HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 3101 | Airworthiness Directives; British Aerospace HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 Airplanes |
Unsafe Condition
The nose landing gear steering jack seals may deteriorate over time due to weather and climate conditions, leading to reduced or loss of control during takeoff, landing, and taxi operations.
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Required Actions
Replace the nose wheel steering jack seals with improved design seals as specified in Jetstream Service Bulletin 32-JA900942, Revision No. 5, and APPH Ltd. Service Bulletin 32-51. Ensure compliance with the referenced service bulletins' instructions.
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Compliance Time
Within the next 9 calendar months after the effective date of this AD (April 26, 1999).
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Affected Aircraft
British Aerospace HP137 Mk1, Jetstream Series 200, and Jetstream Models 3101 and 3201 airplanes with steering jack type 618200 and nose gear types 1873, B00A702852A, B00A703056A, or B00A703064A.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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