SDR CA190627007

Service difficulty report · Circuit Breaker · Bombdr DHC8400

Difficulty date: June 25, 2019
Submitted: August 17, 2020
Operation: General aviation
Make and model: Bombdr DHC8400
Aircraft time: 4,811 hours
System (JASC): 2400 · Electrical Power System
Part: Circuit Breaker
Condition: Tripped
Stage of operation: CR
How discovered: 9
Nature of condition: G
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) IN CRUISE, L LWR CB N10 RELEASED, 20 MIN LATER J10 AND K10 RELEASED. UPON FLAP SELECTION L7 RELEASED (WITH ASSOCIATED FLAP POWER CAUTION). AFTER SHUTDOWN RH N10 RELEASED. THE PREVIOUS DAY, PRIOR TO PUTTING POWER ON THE THE A/C FOLLOWING RON, FOUND NUMEROUS CB`S RELEASED. EPCU WAS REPLACED AT THAT TIME BUT DEFECT OCCURRED ON SUBSEQUENT FLIGHT AS DESCRIBED ABOVE. IN-WORK, SDR WILL BE UPDATED UPON DEFECT RESOLUTION. (TC# 20190627007)