SDR UIEA2019083105409

Service difficulty report · Valve · Boeing 767306

Difficulty date: August 31, 2019
Submitted: September 4, 2019
Operation: Air carrier
Aircraft: N1427A
Make and model: Boeing 767306
Aircraft serial: 28098
Aircraft time: 79,652 hours, 17,028 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Valve
Condition: Misinstalled
Location: Ac Bay
Stage of operation: AP
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

DURING APPROACH, LEFT PACK TEMP EICAS MESSAGE. PACK OPERATED IN STANDBY MODE AFTER PACK RESET. TRANSFERRED TO MDDR 117124 PER MEL 21-51-03-01, CAT C, DUE 10-SEP-19. PLACARDS INSTALLED AND MCC NOTIFIED. LP 1073215 - M3: T/S PACK CONTROL SYSTEM AND FOUND TRIM AIR SUPPLY VALVE INSTALLED BACKWARDS. REMOVED AND RE-INSTALLED TRIM AIR SUPPLY VALVE IAW AMM 21-61-05. OPS CHECKS GOOD, NO FAULTS AT THIS TIME. THIS CLEARS MDDR 117124. MCC NOTIFIED AND PLACARDS REMOVED.