Service difficulty report · Proximity Switch · Boeing 767322

Difficulty date
May 23, 2024
Submitted
May 27, 2024
Operation
Air carrier
Aircraft
N644UA
Make and model
Boeing 767322
Aircraft serial
25094
Aircraft time
125,672 hours, 19,473 cycles
Part
Proximity Switch
Part number
849704
Part serial
634
Condition
Faulted
Location
Cargo Door
Part time
673 hours, 101 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
B, A

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

What was found

MULTIPLE EICAS EMEG DOOR CARGO DOORS AND ENTRY DOORS. PRESSURIZATION WAS ERRATIC DURING THIS HISTORY ON PSEU UNIT, ASSY, PRO OFF 76-3260-9-0005 0634 ON 76-3260-9-0005 1064 UNIT, ASSY, PRO OFF 76-3260-9-0005 0634 ON 0000 FOUND PSEU S/N = 0634 FAULTED FOR SAME DISCREPANCY ON PREVIOUS AIRCRAFT. REMOVED AND REPLACED PSEU (M162) PER AMM 32-09-04/401. OPS CHECK GOOD. REF LOGPAGE 8049281 FOR PRESSURIZATION ERRACTIC SIGN OFF. PARTS USED: 76-3260-9-0005,