Service difficulty report · Circuit Breaker · Doug MD88

Difficulty date
April 27, 2017
Submitted
May 2, 2017
Operation
Air carrier
Aircraft
N993DL
Make and model
Doug MD88
Aircraft serial
53345
Aircraft time
66,417 hours, 47,789 cycles
Part
Circuit Breaker
Condition
Defective
Location
Hydraulic Sys
Stage of operation
CL
How discovered
O
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

RIGHT HYDRAULIC AUX PUMP CIRCUIT BREAKER POPPED AFTER TAKEOFF. CHECKED RT HYD AUX PUMP WIRING REF W/C 2920-01098-0201. FOUND NO POWER TO AUX PUMP ON ALL THREE PHASES. INSPECTED AUX PUMP C/B AND FOUND B PHASE WIRE BURNED AND B PHASE BUS BAR BURNED. REMOVED AND REPLACED RT AUX PUMP C/B B1-764 IAW WDM 29-21. REMOVED AND REPLACED BUS SENSE C/B B1-199 IAW WDM 24-21. REPLACED B PHASE BUSS BAR AND JUMPER ALL CKS GOOD IAW AMM 29-00.

More about the Doug MD-88