Service difficulty report · Amplifier · Boeing 737824

Difficulty date
May 25, 2025
Submitted
May 27, 2025
Operation
Air carrier
Aircraft
N14242
Make and model
Boeing 737824
Aircraft serial
28805
Aircraft time
77,900 hours, 28,937 cycles
Part
Amplifier
Part number
6225342101
Part serial
9J3N
Condition
Faulted
Location
E/E Bay
Part time
65,681 hours, 26,095 cycles
Stage of operation
CR
How discovered
O
Nature of condition
B
Precautionary procedure
A

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

What was found

PA AND INTERPHONE SYS INOP AT CRUISE PERFORMED VISUAL INSPECTION OF WIRE BUNDLES OVER FLIGHT DECK DOOR, NO CAFFING WIRES FOUND, FOUND PA AMP NOT LATCHED DOWN AND NOT SEATED, AS PRECAUTIONARY, REPLACED PA AMP REF AMM 23-31-01, OP CHECKS GOOD. DUE TO OTHER RECENT HISTORY OF PA AND CHIMES ISSUES, REPLACED FWD ATT BACKPLANE REF AMM TASK 25-25-11-000-801, OP CHECKS GOOD. FOUND NO SMOKING SIGN UNTERMITTENT AND WORN, REPLACED REF WDM 33-25-11-1.1, OP CHECKS GOOD PER TOMC REQ AND DUE TO FLIGHT DIVERSION PLS RUN ENGINES WHILE TESTING PA AND INTERPHONES TO VERIFY BOTH TEST NORMAL TESTED ALL HANDSETS FOR PA AND CABIN INTERCOM FUNCTION WITH BOTH ENGINES RUNNING, NO DEFECTS NOTED COMPLETED ALL RECOMMENDATIONS PER TOMC REQUEST, AIRCRAFT OK TO RETURN TO SVC.