# SDR CALA2026032714868

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2026
- Submitted: March 27, 2026
- Operation: Air carrier
- Aircraft: [N37409](https://openairdocs.org/aircraft/N37409), registered now
- Make and model: Boeing 737924
- Aircraft serial: 30126
- Aircraft time: 65,441 hours, 27,393 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Seal
- Condition: Misinstalled
- Location: Precooler
- Part time: 3,184 hours, 1,455 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: W, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026032714868

## Discrepancy

L BLEED TRIP ON TAKEOFF ABORTED APPROX 40 KNOTS PERFORMED (BLEED TRIP OFF LIGHT ON )- FAULT ISOLATION REFERENCE: 36-10 TASK 809, FOLLOWED UP TO STEP F 4, FOUND KISS SEAL INSTALLED INCORRECTLY. CALLED TOMC PARTS ON ORDER REMOVED AND REPLACED KISS SEAL IN REF AMM  36-12-02, PERFORMED LEAK CHECK IN REF AMM TASK 36-11-00-700-802 FOUND PRECOOLER CONTROL VALVE INOP

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