AD 97-03-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | SAAB 340B | Airworthiness Directives; Saab Model SAAB SF340A, SAAB 340B, and SAAB 2000 Series Airplanes |
| aircraft | Saab AB, Saab Aerosystems | 340A (SAAB SF340A) | Airworthiness Directives; Saab Model SAAB SF340A, SAAB 340B, and SAAB 2000 Series Airplanes |
Unsafe Condition
Unexpected decreases in main wheel brake pressure due to incorrect engagement between the main wheel coupling and the wheel speed transducer, resulting in false signals to the anti-skid control box.
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Required Actions
Replace each main wheel hubcap drive coupling with part number 40-91115, Rev. D, in accordance with applicable Saab Service Bulletins. Prohibit installation of main wheel hubcap drive couplings with part number 40-91115 in specified wheel hubcaps.
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Compliance Time
Within 90 days after the effective date of this AD (March 19, 1997).
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Affected Aircraft
Saab Model SAAB SF340A (serial numbers 004 through 159), SAAB 340B (serial numbers 160 through 378), and SAAB 2000 (serial numbers 002 through 029).
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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