AD 2021-10-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
sand and corrosion contamination of the left- and right-hand elevator torque tube bearings, restricting free rotation, which could lead to binding or seizure of the bearings, and potentially lead to a reduction in or loss of airplane pitch control.
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Required Actions
repetitive general visual inspections of the left- and right-hand elevator torque tube bearings for any sand, dust, or corrosion; repetitive functional tests of the elevator control system; and replacement of the elevator torque tube bearings if necessary.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
all Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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