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Tue, Mar 02, 2004

AD: Bombardier Otter

AD NUMBER: 2004-05-01

MANUFACTURER: Bombardier
SUBJECT: Elevator Servo Tab
SUMMARY: The FAA adopts a new airworthiness directive (AD) for certain Bombardier Inc. (formerly deHavilland Inc.) Model Otter DHC-3 airplanes that have turbine engines installed per one of three supplemental type certificates (STC). This AD prohibits you from operating any affected airplane with these engine and propeller configurations unless a new STC for an elevator servo tab with a redundant control linkage is installed. This AD is the result of reports of the control rod to the elevator servo-tab system detaching from the elevator servo-tab, which caused the elevator servo-tab to flutter on airplanes with a turbine engine installed. The FAA is issuing this AD to prevent a single failure of the elevator servo-tab system, which could cause severe tab flutter. This failure could lead to possible loss of control of the airplane.

FMI: www.avantext.com/DailyADIndex.ASP?AD=20040501

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