AD 75-17-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | H.P. 137 Jetstream Mk. 1 | Airworthiness Directives; Handley Page (Scottish Aviation, LTD.) Model HP-137 Mark I Airplanes |
Unsafe Condition
Insufficient depth of engagement of wing-fuselage fittings spigots (P/N 13781B-5) may result in structural failure of the wing-fuselage joint.
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Required Actions
Inspect spigots radiographically for depth of engagement. Replace spigots with P/N 13781B-7 or a radiographically approved equivalent if recessed more than 0.26 inches. Comply with Service Bulletin No. 7/1, Issue No. 3, or FAA-approved equivalent.
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Compliance Time
Within the next 100 hours' time in service after the effective date of this AD or prior to the accumulation of a total of 2,500 landings, whichever occurs later (for specified serial numbers). Within the next 100 hours' time in service after the effective date for all other airplanes.
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Affected Aircraft
Handley Page (Scottish Aviation, LTD.) Model HP-137 Mark I airplanes without Modification No. 1219, specifically serial numbers 213, 216, 217, 218, 220, 221, 224, 237, 238, and 246 are subject to specific compliance timing. All other HP-137 Mark I airplanes are affected.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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