AD 2019-03-29
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
jamming of the steering selector valve (SSV) after independent failure of a second component of the nose wheel steering system, which could result in uncommanded nose wheel steering and a possible runway excursion.
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Required Actions
modifying the left-hand hydraulic system of the NWS control system by installing a hydraulic filter into the hydraulic line between the direct current motor pump and the SSV and, for certain airplanes, torqueing the fittings on a certain tube assembly.
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Compliance Time
Before further flight
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Affected Aircraft
Bombardier, Inc., Model BD-100-1A10 airplanes, serial numbers 20720 and 20722 are exempt from the actions specified in paragraph (g) of this AD.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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