Service difficulty report · Controller · Boeing 767424ER

Difficulty date
January 14, 2025
Submitted
January 16, 2025
Operation
Air carrier
Aircraft
N76064
Make and model
Boeing 767424ER
Aircraft serial
29459
Aircraft time
88,984 hours, 14,363 cycles
Part
Controller
Part number
1420271
Part serial
127
Condition
Faulted
Location
E/E Bay
Part time
24,248 hours, 3,542 cycles
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

REPEAT WRITE UP ANTISKID CAUTION LT ILLUMINATEDTOMC LOCKS FOR TSING AND REPAIR. ANTISKID INOP REPEAT. 2 HISTORY ITEMS ON 13TH. CREW DEBRIEF - CREW STATED ANTISKID LIGHT ILLUMINATED AFTER GEAR RETRACTION. LIGHT WENT ON AND OFF THROUGHOUT THE WHOLE FLIGHT. UPON LANDING LIGHT STAYED ILLUMINATED. LABOR HOURS UDATED ALONG WITH GROUND TIME . NORM ANTISKID" AND ALTN ANTISKID" STATUS MESSAGES PRESENT ON EICAS. PERFORMED ANTISKID AUTOBRAKE CONTROL UNIT BITE PROCEDURE IN REFERENCE TO 32-42 FAULT TREE 815 AND THE FOLLOWING MESSAGES WERE FLAGGED: XDCR 7, BOX 4-8, AND XDCR 8. REMOVED AND REPLACED AACU REFERENCE ELB PAGE NO 3536146 FOR WORK PERFORMED. PERFORMED RESISTANCE CHECKS ON #7 AND #8 TRANSDUCER AND FOUND THEM TO BE WITHIN LIMITS IN REFERENCE TO 32-42 FAULT TREE 815. PERFORMED RESISTANCE CHECK FROM THE AACU CONNECTOR (D2372A) PINS A5 AND A6 TO THE #8 TRANSDUCER CONNECTOR (D2026) PINS 1 AND 3 AND FOUND THE RESISTANCE VALUES TO BE SATISFACTORY. ALSO PERFORMED RESISTANCE CHECK FROM THE AACU (D2372A) PINS A12 AND A13 TO THE #7 TRANSDUCER CONNECTOR D2024 PINS 1 AND 3 AND FOUND THE RESISTANCE TO BE 354OHMS REFERENCE WDM 32-42-11-1. DISCONNECTED CONNECTOR D6993P AT THE J6 JUNCTION BOX AND PINS 1 AND 3 ON CONNECTOR D2026 RREF WDM 32-42-22-1 FOUND OPEN WIRE W1524-204R-20. RE-TERMINATE WIRE ON D5032P. CLEANED CONNECTIONS AND RAN TESTS FOR WHEEL SPIN UP TEST REF AMM 32-42-00 AND ANTISKID SYSTEM OPERATIONAL TEST. ALL TESTS PASSED, ANTISKID SYSTEM RETURNED TO OPERATION.