SDR CALA2009072400393

Service difficulty report · Computer · Boeing 757224

Difficulty date: July 24, 2009
Submitted: July 24, 2009
Operation: Air carrier
Aircraft: N29124
Make and model: Boeing 757224
Aircraft serial: 27565
Aircraft time: 42,647 hours, 12,377 cycles
System (JASC): 3445 · Air Collision Avoidance System
Part: Computer
Part number: 066500002120
Part serial: 2441
Condition: Failed
Location: Tcas
Part time: 47,851 hours, 17,799 cycles
Stage of operation: CR
How discovered: O
Nature of condition: B
Precautionary procedure: H

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

What was found

TCAS C/B POPPED DURING FLIGHT, TCAS EICAS MSG (ELECTRICAL ODOR OBSERVED) FOUND TCAS COMPUTER NOT TESTING AND WHEN TCAS TEST PERFORMED IN EITHER POSITION TCAS FAIL DISPLAYED. REMOVED AND REPLACED TCAS COMPUTER PER AMM 34-45-01, OPS CHECK GOOD. REPLACED C/B "TCAS" P/N BACC18AD5 ROTABLE PARTS CHANGE WAS INDICATED - TT NUMBER 1382967, S/N OFF 02441 COMPUTER, TCAS, OFF 19-3445-9-0001 2441 ON 19-3445-9-0001 9544.