# SDR K11A2025062600322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 2025
- Submitted: March 4, 2026
- Operation: Air carrier
- Aircraft: [N732CK](https://openairdocs.org/aircraft/N732CK), registered now
- Make and model: Boeing 737405
- Aircraft serial: 24271
- Aircraft time: 70,181 hours, 48,038 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Control Valve
- Part number: 32895626
- Part serial: 4229
- Condition: Failed
- Location: Zone 600
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/K11A2025062600322

## Discrepancy

LT & RT BLEED TRIP OFF & CABIN DEPRESSURE, 2ND EVENT BLEED TRIP OFF LIGHT ON RT PACK ILLUM AFTER ROTATION, BLEED TRIP RESET BUTTON RESET BUT BLEED TRIP OFF LIGHT CAME BACK, PERFORMED BLEED AIR CONTROL SYS OPS TEST, ENG IAW AMM 36-11-05. LT OPS CHKD GOOD. RT NR 2 FAILED OPS CHK.  BLEED TRIP OFF LIGHT ON RT PACK ILLUM AFTER ROTATION.  BLEED TRIP RESET BUTTON SET BUT BLEED TRIP OFF LIGHT CAME BACK. PRSOV LOCKED OUT, .  R & R PRSOV IAW AMM 36-11-15, OPS CHKD GOOD,  OPS CHK OF BLEED AIR CONTROL SYS IAW AMM 36-11-05, CHKD GOOD.  RT BLEED TRIP LIGHT ILLUM AFTER TAKEOFF. R & R 490 F THERMOSTATIC SWITCH IAW AMM 36-11-71, CHKD GOOD IAW AMM 36-11-05, LEAK CHKD GOOD, ENG RUNS IAW AMM 71-00-00. RT BLEED TRIP LIGHT ILLUM AFTER TAKEOFF. R & R RT PRECOOLER CONTROL VALVE IAW AMM 36-12-35, OPS & LEAK CHKD GOOD IAW AMM 36-11-05. ENG RUNS IAW  AMM 71-00-00.

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