# SDR ASOA200900892

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2009
- Submitted: August 17, 2009
- Operation: Air carrier
- Aircraft: [N916EV](https://openairdocs.org/aircraft/N916EV), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7757
- Aircraft time: 14,367 hours, 12,424 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Unknown
- Condition: Unknown
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASOA200900892

## Discrepancy

AIR RETURN TO ATL W/AN OVERWEIGHT LANDING DUE TO AN UNKNOWN RYTHMIC, THUMPING SOUND UNDERNEAT THE FLIGHT DECK.  LANDING WT WAS 49,000 W/A 200-300 FPM SINK RATE.  AIRCRAFT RETURNED TO ATL AFTER T/O.  EMERGENCY DECLARED.  FLT 5263 CX.

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