AD 90-26-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; SAAB-SCANIA Model SF-340A Series Airplanes |
Unsafe Condition
Reduced structural integrity of the horizontal stabilizer due to potential cracks in the horizontal stabilizer and drag angle attaching holes.
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Required Actions
Perform an eddy current inspection and repair cracks in the horizontal stabilizer per Service Bulletin 340-55-013; reinforce the horizontal stabilizer per the same service bulletin. Remove left and right drag angles and shims, inspect attaching holes for cracks, install new drag angles and shims per Service Bulletin 340-55-027. Compliance with alternate means may be approved by the FAA.
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Compliance Time
Prior to the accumulation of 16,000 landings or within 90 days after July 13, 1990 (effective date of AD 90-12-12), whichever occurs later for parts A and B. For part B, also prior to 16,000 landings or within 90 days after the effective date of this AD, whichever occurs later.
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Affected Aircraft
Saab AB, Saab Aerosystems Model SF-340A series airplanes, Serial Numbers 004 through 138, inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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