# SDR SWAA2025101524638

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2025
- Submitted: October 15, 2025
- Operation: Air carrier
- Aircraft: [N227WN](https://openairdocs.org/aircraft/N227WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34450
- Aircraft time: 65,045 hours, 39,023 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Condition: Out Of Adjust
- Location: Zone 400
- Stage of operation: TO
- How discovered: O
- Nature of condition: E
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025101524638

## Discrepancy

EXCESSIVE NOSE WHEEL SHIMY ON TAKE OFF ROLL DIFFICULT TIME TRACKING RUNWAY CENTERLINE ; TAKE OFF REJECTED. CREW REPORTED REJECTED T/O BETWEEN 90-100 KTS.<[01] PERFORMED INSPECTION OF NLG PER AMM 09-11-00. NO DEFECTS NOTED.;[02] PERFORMED NLG STEERING ADJUSTMENT CHECK; ALL CHECKS ARE GOOD PER AMM 32-51-00.;[03] PERFORMED INSPECTION OF RUDDER PEDAL INTERCONNECT INPUT ROD PER AMM 32-51-00. NO DEFECTS NOTED.;[04] REMOVED AND REPLACED NOSE WHEEL TIRES REF AMM 32-45-21;[05] REMOVED AND REPLACED #1 ENGINE HYD. PUMP; AND PERFORMED ALL OPS AND LEAK CHECKS; ALL CHECKS ARE GOOD PER AMM 29-11-11 ON NON-ROUTINE (TTG8Q015QTHW);[06] PERFORMED TAXI OF AIRCRAFT AND NO ABNORMAL NOSE WHEEL SHIMMY WAS NOTED PER AMM 09-20-00.

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