AD 93-01-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | H.P. 137 Jetstream Mk. 1 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream 3201 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 200 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 3101 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
Unsafe Condition
Tailplane de-icing system failure, including false indication of system operation, and subsequent loss of pitch control, which could result in loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the tailplane de-icing system for contamination within 25 hours time-in-service after the effective date, and every 150 hours TIS until modification is done. Modify the system, replace and relocate the tail unit pressure switch within 400 hours TIS after the effective date. Drain accumulated water before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 hours time-in-service after the effective date of this AD, and thereafter at intervals not to exceed 150 hours TIS until the modification required by paragraph (b) is accomplished. Within the next 400 hours TIS after the effective date for modification.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
British Aerospace Regional Aircraft HP 137 Mk1, Jetstream Models 200, 3101, and 3201 (serial numbers 1 through 969 and 971).
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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