# SDR 9WGA2016043001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2016
- Submitted: May 3, 2016
- Operation: Air carrier
- Aircraft: [N415JN](https://openairdocs.org/aircraft/N415JN), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48415
- Aircraft time: 62,854 hours, 12,769 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Unknown
- Condition: Vibration
- Location: Zone 700
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9WGA2016043001

## Discrepancy

DURING LG RETRACTION, HEARD SERIOUS BANG NOISE WITH ASSOCIATED AIRFRAME VIBRATIONS.  INSPECTED ALL FOUR LG ASSEMBLIES WITH WHEELS & BRAKES, & ALL FOUR WW WITH NO DISCREPANCIES FOUND.  CHECKED INLET & TAIL PIPES OF ALL THREE ENGS WITH NO DISCREPANCIES NOTED.  REPLACED BOTH NLG WHEEL ASSEMBLIES AS A PRECAUTION.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.