# SDR SWAA2012102308766

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2012
- Submitted: October 23, 2012
- Operation: Air carrier
- Aircraft: [N231WN](https://openairdocs.org/aircraft/N231WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32499
- Aircraft time: 24,438 hours, 14,316 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Pad
- Condition: Defective
- Location: Nr 2 Engine
- Stage of operation: TO
- How discovered: O
- Nature of condition: R
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2012102308766

## Discrepancy

ABORTED TAKEOFF.  ADVANCED THRUST LEVERS FOR TAKEOFF ENGINE STABILIZED AT 40 PERCENT NR 2 ENGINE REMAINED AT APPROX 50-60 PERCENT WHILE NR 1 ENGINE ADVANCED TO TAKEOFF POWER.  ABORTED TAKEOFF AT APPROX 10-20 KTS AUTO THROTTLES WERE USED FOR T/O.  FOUND VBV RING GUIDE PADS IMPENDING THE 7 O'CLOCK POS VBV VALVE.  REMOVED 4 EA VBV RING GUIDE PADS PER AMM.

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