# SDR CALA2026071417789

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2026
- Submitted: July 15, 2026
- Operation: Air carrier
- Aircraft: [N19141](https://openairdocs.org/aircraft/N19141), registered now
- Make and model: Boeing 757224
- Aircraft serial: 30354
- Aircraft time: 90,396 hours, 21,367 cycles
- System (JASC): [3445 · Air Collision Avoidance System](https://openairdocs.org/jasc/3445)
- Part: Computer
- Part number: 8221293033
- Part serial: 8034
- Condition: Faulty
- Location: Tcas
- Part time: 48,876 hours, 15,520 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026071417789

## Discrepancy

TCAS RA CLIMBING THRU 5000..CLIMB FOR 2000 FOLLOWED BY DESCEND WITH NO VISIBLE TRAFFIC,  WORK WITH FIM 34-45 TASK 801. MTX WORKING ITEM REF LP 9587435 FOR WORK PERFORMED TCAS RA CLIMBING THRU 5000.  CLIMB FOR 2000 FOLLOWED BY DESCEND WITH NO VISIBLE TRAFFIC REF LP 9586057.  WORK WITH FIM 34-45 TASK 801.  RAN TCAS BITE TEST WITH ATC IN POSITION 1 & 2 AND ALL TEST PASSED WITH NO FAULTS. IAW  FIM 34-45 FAULT TREE 802. NEEDS FURTHER TROUBLE SHOOTING. ACFT MOVED OFF GATE TO THE HANGAR. R & R TCAS COMPUTER IAW AMM 34-45-01. OPS CHKD GOOD.

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