AD 99-19-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | SAAB 2000 | Airworthiness Directives; Saab Model SAAB SF340A, SAAB 340B, and SAAB 2000 Series Airplanes |
| 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
Failure to activate the airframe pneumatic deicing boots at the first signs of ice accumulation during icing conditions, leading to reduced controllability due to adverse aerodynamic effects of ice adhering to the airplane prior to the first deicing cycle.
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Required Actions
Revise the Airplane Flight Manual (AFM) Limitations Section to require activation of the airframe pneumatic deicing boots at the first sign of ice accretion or ice detector annunciation. Include procedures for periodic cycling of the deicing boots.
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Compliance Time
Before further flight
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Affected Aircraft
Saab Model SAAB SF340A, SAAB 340B, and SAAB 2000 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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