# SDR ASAA2013091495976

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2013
- Submitted: September 16, 2013
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 18,378 hours, 5,729 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 32895625
- Part serial: 10227
- Condition: Failed
- Location: Nr 2 Precooler
- Part time: 24,265 hours, 7,583 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/ASAA2013091495976

## Discrepancy

BLEED TRIP OFF LIGHT ILLUMINATED AFTER 28 PSI SPLIT ON CLIMB WILL NOT EXTINGUISH.  ACFT GROUNDED.  FOUND PRECOOLER CONTROL VALVE LOOSE  AND SHEARED SHAFT, REPLACED VALVE REF AMM 36-12-02-400-801, INSTALLATION TEST GOOD. ACCOMPLISHED HEALTH CHECK T/C NG- 36WC-00001, NO DEFECTS NOTED. ACCOMPLISHED ENGINE BLEED AIR CROSSOVER OPS TEST IAW AMM 36-11-00-710-801 NR 2 ENGINE , ALL PARAMETERS NORMAL.

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