AD 90-13-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; SAAB-SCANIA Model SF-340A Series Airplanes |
Unsafe Condition
Fatigue damage and reduced structural integrity of the wings due to potential cracks in the wing/fuselage attachment fitting fasteners at Wing Station 42.3.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove four fasteners in the lower part of the wing/fuselage attachment fitting at Wing Station 42.3 (left and right wings), enlarge the holes, and inspect for cracks using eddy current testing per SAAB-Scania Service Bulletin 340-57-017. Install oversize fasteners if no cracks are found; further enlarge holes and install oversize fasteners if cracks are found; repair if cracks remain after maximum reaming.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to the accumulation of 16,000 landings or within 30 days after the effective date of this AD (July 23, 1990), whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Saab AB, Saab Aerosystems Model SF-340A series airplanes, Serial Numbers 004 through 108, inclusive.
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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