AD 2021-10-26
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
DC motor pump (DCMP) failures during production flight tests, which caused the electrical system generators to disconnect due to excessive induced voltage in the bus, caused by the DCMP overheating at high altitudes.
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Required Actions
Install the redesigned DCMP electric motor assembly, having part number (P/N) 945202-3, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-29-18, Revision 03, dated December 18, 2014.
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Compliance Time
Within 6 months after the effective date of this AD
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Affected Aircraft
Bombardier, Inc., Model BD-100-1A10 airplanes, certificated in any category, serial numbers 20003 through 20406 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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