AD 2004-14-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | DHC-8-400 | Airworthiness Directives; Bombardier Model DHC-8-400 Airplanes |
Unsafe Condition
Failure of the main landing gear (MLG) downlock proximity sensors on the same MLG at the same time, which could result in the MLG's failure to extend during landing, and cause injury to flightcrew and passengers.
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Required Actions
Replace the left-hand and right-hand MLG downlock proximity sensors with new, improved sensors having new part numbers, per Bombardier Service Bulletin 84-32-09, Revision A. Remove the AFM revision required by paragraph (a) of this AD once the sensors have been replaced.
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Compliance Time
Within 6 months after the effective date of this AD.
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Affected Aircraft
Bombardier Model DHC-8-400 airplanes, serial numbers 4001 through 4055 inclusive; certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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