AD 92-14-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | SAAB 340B | Airworthiness Directives; SAAB-SCANIA Model SAAB SF340A and SAAB 340BSeries Airplanes |
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; SAAB-SCANIA Model SAAB SF340A and SAAB 340BSeries Airplanes |
Unsafe Condition
Loss of structural integrity of the powerplant installation and subsequent damage to the engine forward frame.
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Required Actions
Inspect upper and lower drag strut attachment fittings and adjacent skin area, upper longeron and attaching frame, and angle attaching the frame to the side wall for loose fasteners, loose fittings, and cracks; torque inspect MS21042 nuts. If loose fasteners or fittings are found, perform a detailed inspection. If nuts are out of torque tolerance, retorque. If cracks are found, repair as approved. Additionally, inspect drag strut attaching holes for elongation, damage, and abnormal wear, and repair if necessary. Conduct a detailed inspection of lower drag strut attachment holes and related areas, and repair if defects or excessive damage are found.
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Compliance Time
Within 1,500 hours time-in-service after the effective date; thereafter at intervals not to exceed 1,500 hours time-in-service for initial inspections. For drag strut attaching holes inspections, within 3,000 hours time-in-service after the effective date; thereafter at intervals not to exceed 3,000 hours time-in-service. For lower drag strut attachment holes inspection, prior to the total accumulation of 22,000 landings or within 500 landings after the effective date, whichever occurs later.
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Affected Aircraft
Saab AB, Saab Aerosystems Model SAAB 340B and 340A (SAAB SF340A) airplanes, serial numbers 004 through 159 for SF340A, and 160 through 166 for 340B.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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