Challenger 300 Airworthiness Directive

Challenger 300 Airworthiness Directive (AD 2021-10-26)
Challenger 300 Airworthiness Directive (AD 2021-10-26)

This AD was prompted by reports of DC motor pump (DCMP) failures during production flight tests. These failures caused the electrical system generators to disconnect due to excessive induced voltage in the bus, caused by the DCMP overheating at high altitudes. The FAA is issuing this AD to address failures of the DCMP and electrical system generators, which could lead to the loss of normal electrical power on the airplane. 

Within 6 months after the effective date of this AD: 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. This is effective 7/6/21.  

This AD can be corrected in 3-4 working days and can be performed at any of the West Star full-service facilities (ALN, GJT, PCD & CHA).

Estimated cost to address AD 2021-10-26 is approximately $28,000.  Contact your West Star Technical Sales Manager today for more information.

Call West Star Aviation’s Challenger Specialists at our full-service ALN, GJT, CHA or PCD facilities for more information or to schedule your input today.

Steve Bates

Steve Bates

Bombardier Technical Sales Manager (ALN)
618.258.8054
sbates@wsa.aero

Donnie Shealy

Donnie Shealy

Technical Sales Manager (CHA)
803.319.5109
dshealy@wsa.aero

Randy Miller

Randy Miller

Technical Sales Manager Challenger & Global (GJT)
970.248.5270
rmiller@wsa.aero

Larry Marler

Larry Marler

Technical Sales Manager (CHA)
423.598.1578
lmarler@wsa.aero

Jeff Messmer

Jeff Messmer

Technical Sales Manager (PCD)
314.607.4069
jmessmer@wsa.aero

Sign UpTo Receive The Latest News with West Star Aviation

  • Review our Privacy Policy