SDR ABXA010522

Service difficulty report · Capacitor · Doug DC863

Difficulty date
September 14, 2001
Submitted
October 3, 2001
Operation
Air carrier
Aircraft
N820AX
Make and model
Doug DC863
Aircraft serial
46155
Aircraft time
69,477 hours, 22,786 cycles
Part
Capacitor
Part number
9510868060
Condition
Blown
Component
Radio Altimeter · Collins · F1
Component part number
TRANSCEIVER
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

#1 RADIO ALTEMETER CIRCUIT BREAKER OPENED. THE BREAKER WAS RESET ONCE AND OPENED AGAIN. MAINTENANCE REPLACED THE #1 RADIO ALTIMETER IAW DC8 MAINTENANCE MANUAL 34. INSPECTION OF THE RADIO ALTIMETER INDICATED THAT THE POWER SUPPLY INPUT CAPACITOR A6C1A EXPLODED, CAUSING POWER SUPPLY DAMAGE AND POSSIBLE FLAME. ADJACENT COMPONENTS WITHIN THE RADIO ALTIMETER WERE DAMAGED OR BURNT, AND THE UNIT WAS CONTAMINATED WITH CAPACITOR CHEMICALS. RADIO ALTIMETER S/N 11043 WAS SCRAPPED.

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