# SDR CALA2024011900156

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2024
- Submitted: March 20, 2024
- Operation: Air carrier
- Aircraft: [N662UA](https://openairdocs.org/aircraft/N662UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27159
- Aircraft time: 118,668 hours, 18,150 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire Harness
- Part number: 286T3520045
- Condition: Chafed
- Location: Lt Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024011900156

## Discrepancy

L ENG FIRE LP 2 EICAS. THE LEFT ENGINE FIRE LOOP 2 HAS A FIRE OR THERE IS A FAILURE OUT PUT. INTERMITTENT STATUS MESSAGE NO EICAS MESSAGE ON ARRIVAL. L ENG LP 2 INTERMITANT DURING CRUISE. TALKED TO CREW, WRITE UP IS IN REFERENCE TO LOGPAGE 6821086. MESSAGE WAS INTERMITTANT ALSO IN FLIGHT, PILOTS REPORT MESSAGE WAS ACTIVE ON SECOND HALF OF FLIGHT BUT DISAPPEARED AFTER LANDING. FAULT ALREADY ON DEFERRAL. HISTORY REVIEWED AND NOTED FAULT OCCURED ON PREVIOUS DAY. FIM TASK 26-11 FAULT TREE 805 FOLLOWED TO BLOCK 30. DUE TO MESSAGE BEING INTERMITTEN, ENGINE FIRE DETECTION BITE PROCEDURE FIM TASK 26-11 FAULT TREE 804 FOLLOWED TO BLOCK 100B. DUE TO HISTORY AND TIME, MEL REQUESTED FOR FURTHER T/S. MEL REF 2611D COMPLIED WITH. DISPATCH DESK: 60 NAME: M.C. DATE: 15-JAN-24- MEL 2611D APPROVED INFO ONLY, REF LOGPAGE 6830655, MESSAGE IS INTERMITTENT IN FLIGHT BUT DISAPPEARS AFTER LANDING. **TECH SUPPORT UPDATE** CONTINUE WITH FIM 26-11 TREE 804. RECORD AND REPAIR FAULTS. ALSO REFERENCE SERVICE TIP IN AMM 26-11-00/101 FOR TROUBLESHOOTING AID. THANKS!! ORDLM BEHRENT SPOKE WITH TECH SUPPORT AND CONSULTED WDM, BROKEN PINS ARE NOT IS USE BY CARD, NOT CAUSE OF FAULT. CONTINUING WITH FIM 26-11 COMPLETED FIM 26-11 TASK 804 UP TO STEP 4, FAULT NEVER APPEARED AND DID NOT SWITCH SIDES UPON CARD SWITCH. COULD NOT OPEN MOTOR PLZ REF LP 6850915 FOR FINDINGS ON WIRING CHAFFING PERFORMED FIM 26-11 TASK 804. LED TO BLOCK 2 SHEET 1. UPON REMOVAL OF CARD FROM FILE FOUND 2 PINS SHEARED OFF IN CONNECTOR. PICTURES ATTACHED. TASK 804 PER TECH SUPPORT UPDATE. FOR FIM STEP 100A. WIRE CHAFFING UNDER FIRST CLAMP OF UPPR AFT LH ENG FIRE DETECTOR. PLZ SEE PICS ATTACHED ADDITIONAL PICTURE ORDERED NEW CLAMP P/N TA025041-02 THERE ARE 4 DAMAGED WIRES. W3506-501R-16, W3506-502R-16, W3506-504R-16, W3506-505R-16. TECH SUPPORT IS REQUESTING A PERMANENT REPAIR. NEW WIRE HAS BEEN RECEIVED. IN WORK REMOVING WIRES. PREVIOUS ENRTY WAS MADE IN ERROR. CORRECT WIRE NUMBERS ARE W3520-501R-16, W3520-502R-16, W3520-504R-16 AND W3520-505R-16. CONNECTOR D4154P HAS BEEN REMOVED. WIRES W3520-501R-16 AND W3520-504R-16 HAVE BEEN REMOVED AND NEW WIRES RAN. NEW WIRES TERMINATED AND PINNED WIRES ON CONNECTOR D4154P. INSTALLED CONNECTOR D4145P. LACED AND CLAMPED WIRES FROM D4145P TO TS681 FIRE DETECTORS. TERMINATED AND INSTALLED WIRES W3520-501R, 502R, 504R, AND 505R-16 ON TS681. REF WDM 26-11-11-1, SWPM TERMINATED AND INSTALLED WIRES W3520 - 505R & 502R ON LH SIDE OF TS681. REF WDM26-11-11-1 & SWPM 20-10-11 & SWPM 20-24-26 NEED TO BE TERMINATED, TIED AND CLAMP TIGHTENED. 20-10-11. SWPM 20-24-26. 1 PERFORMED ENG FIRE DETECTION SYSTEM TEST IAW AMM 26-11-00-735-076-003. ALL TEST SATIS.

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