AD 83-07-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | H.P. 137 Jetstream Mk. 1 | Airworthiness Directives; British Aerospace Model HP.137 Jetstream MK.1 and Jetstream 200 Series Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 200 | Airworthiness Directives; British Aerospace Model HP.137 Jetstream MK.1 and Jetstream 200 Series Airplanes |
Unsafe Condition
Cracking of the front pressure bulkhead boundary angle and possible catastrophic depressurization.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Apply a red line to the cabin differential pressure gauge indicating maximum allowable differential pressure (2.5 PSI for airplanes with 12,900+ flights, 4.0 PSI for others), install a placard adjacent to the gauge, and modify the pressurization system per British Aerospace Modification No. 5151/5152 within specified flight limits. Flights may be calculated as hours time-in-service multiplied by two.
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Compliance Time
Within the next 100 flights after the effective date of this AD or upon the accumulation of 2,000 flights, whichever occurs later for airplanes with less than 12,900 flights. Within the next 500 flights for pressurization system modifications. Flights may be determined by multiplying hours time-in-service by two.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
British Aerospace Model HP.137 Jetstream MK.1 and Jetstream Series 200 airplanes certificated in any category.
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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