Airworthiness Directive · Amendment 39-17796 · Electrical power
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes, certificated in any category, serial numbers 20003 and subsequent.
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes. This AD was prompted by multiple reports of erratic electrical status indications on the push button annunciators and the engine instrument and crew alerting system. Certain of those reported incidents resulted in the airplane experiencing a momentary loss of electrical power and loss of flight displays. This AD requires modification of the direct current power centers. We are issuing this AD to prevent loss of electrical power, which could result in the loss of flight displays and reduced controllability of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
For airplanes having serial numbers 20003 through 20405 inclusive: Within 800 flight hours after the effective date of this AD or within 24 months after the effective date of this AD, whichever occurs first, modify the left-hand DCPC, right-hand DCPC, and auxiliary DCPC, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 100-24-23, dated November 26, 2012.
As of the effective date of this AD, no person may install a DCPC having a part number specified in paragraphs (h)(1) through (h)(9) of this AD on any airplane, unless the DCPC serial number has a suffix “R” beside the serial number.
(1) 970GC02Y04.
(2) 970GC02Y05.
(3) 970GC02Y06.
(4) 975GC02Y04.
(5) 975GC02Y05.
(6) 975GC02Y06.
(7) 320GC03Y04.
(8) 320GC03Y05.
(9) 320GC03Y06.
