# SDR DXTA200702167

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2007
- Submitted: May 2, 2007
- Operation: Air carrier
- Aircraft: [N904QS](https://openairdocs.org/aircraft/N904QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500210
- Aircraft time: 4,444 hours, 2,628 cycles
- Engine: Allsn AE3007C
- System (JASC): [3220 · Nose/Tail Landing Gear](https://openairdocs.org/jasc/3220)
- Part: Unknown
- Condition: Failed
- Location: Nlg
- 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/DXTA200702167

## Discrepancy

SEVERE VIBRATION AT  APPROXIMATELY 60 KNOTS DURING TAKEOFF.  YAW DAMPER DISCONNECTED AND NR 1 ADC FAILED.  ABORTED TAKE OFF IAW ETA PROCEDURE. FOUND NLG SQUAT SWITCH OUT OF ADJUST. ADJUSTED SWITCH AS REQUIRED IAW 750 MM 32-60-00. SERVICED NLG STRUT IAW 750 MM 12-10-38.  RETORQUED NLG TORQUE LINK BOLTS IAW 750 MM 32-20-00. ADJUSTED NLG CASTER IAW 750 MM 32-30-03. REPLACED NLG ACT ELASTOMERS IAW 750 SB 32-43. RETORQUED NLG TRUNNION MOUNT BOLTS IAW 750 MM 32-20-00. REMOVED AND REPLACED L/R NLG WHEEL ASSY IAW 750 MM 32-41-00. PERFORMED GEAR SWING IAW 750 MM 32-20-01. ALL OPS CHECK GOOD. TAXI CHECK GOOD. C/W DAMPER LINEAR ACT TEST IAW 750 MM 27-24-00. C/W NR 1 MADC OPS CHECK IAW 750 MM 34-11-08. ALL OPS CHECK GOOD.

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