SDR UALA2010030500767

Service difficulty report · Relay · Boeing 767322

Difficulty date: March 3, 2010
Submitted: March 5, 2010
Operation: Air carrier
Aircraft: N642UA
Make and model: Boeing 767322
Aircraft serial: 25092
Aircraft time: 81,439 hours, 13,097 cycles
Engine: Pwa PW4060
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Relay
Condition: Malfunctioned
Location: Hyd Pump
Stage of operation: IN
How discovered: 9
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

CENTER AIR DEMAND HYD PUMP INOP IN AUTO & ON POSITIONS. FOUND LOW APU BLEED AIR SUPPLY - DF APU BLEED AS PER MEL 3611G. ENGINE NR 1 IDLE RUN ACP AT IAD AND FOUND ADP OP CHECKS NORMAL WITH ENGINE AIR. FOUND LOW APU BLEED AIR SUPPLY - DF APU BLEED AS PER MEL 3611G. ENGINE NR 1 IDLE RUN ACP AT IAD AND FOUND ADP OP CHECKS NORMAL WITH ENGINE AIR. APU BLEED AIR NORMAL, REPLACED RELAY K153. ACCOMPLISHED REF MM, ADP NORMAL, OPS CHECK OK.