# SDR ASAA2015111713825

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2015
- Submitted: November 19, 2015
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 10,658 hours, 3,396 cycles
- System (JASC): [7510 · Engine Anti-Icing System](https://openairdocs.org/jasc/7510)
- Part: Anti-Ice Valve
- Condition: Malfunctioned
- Location: Nr 2 Engine
- Stage of operation: CR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015111713825

## Discrepancy

THRU FL 250 WHEN USING WING ANTI-ICE NR 2 "BLEED TRIP OFF" LIGHT ILLUMINATED.  QRH PROCEDURES FOLLOWED BLEED LIGHT EXTINGUISHES.  ACFT GROUNDED.  REF FIM 36-10, TASK 801, USE OF WING ANTI ICE UNDER SOME CONDITIONS CAN CAUSE THE HSV TO OPEN EARLY & CAUSE A BLEED TRIP.  ACCOMPLISHED NR 2 SYS BLEED AIR TEST IAW AMM 36-00-00-860-804 AND WING TAI SHUTOFF VALVE TEST IAW AMM 30-11-11-710-801.  ALL TESTS PASS.

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