SDR UALA2010061402054

Service difficulty report · Relay · Boeing 757222

Difficulty date: June 14, 2010
Submitted: June 14, 2010
Operation: Air carrier
Aircraft: N566UA
Make and model: Boeing 757222
Aircraft serial: 26670
Aircraft time: 59,020 hours, 21,784 cycles
Engine: Pwa PW2040
System (JASC): 2130 · Cabin Pressure Control System
Part: Relay
Condition: Failed
Location: Cabin Pressure
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

ACFT LOST PRESSURIZATION, FLT DIVERTED. REPLACED PRSOV, RT EICAS BLEED CONFIG CARD M10312, RELAYS K10646, K10436, K10204, K10206 & K10281. ALL NO HELP, FINALLY THE REPLACEMENT OF RELAY K10555 FIXED FAULT. SYS CHECKS OK PERFORMED PNEU TEST.