AD 90-10-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Saab AB, Saab Aerosystems | SAAB 340B | Airworthiness Directives; SAAB-SCANIA Model SAAB 340B Series Airplanes |
Unsafe Condition
Oscillations (flutter) of the rudder
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a cockpit placard restricting airspeed to 220 KIAS within 10 flight hours time-in-service. Incorporate the speed restriction into the AFM's Limitations Section. Install new rudder and rudder trim tab balance weights within 90 days after the AD's effective date. Remove the placard and AFM limitation after balance weights are installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 flight hours time-in-service and within 90 days after the effective date of this AD
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Affected Aircraft
SAAB-SCANIA Model SAAB 340B series airplanes, Serial Numbers 161 through 197
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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