# SDR AALA20170501004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2017
- Submitted: May 3, 2017
- Operation: Air carrier
- Aircraft: [N947AN](https://openairdocs.org/aircraft/N947AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29536
- Aircraft time: 50,479 hours, 20,599 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: B-Nut
- Condition: Loose
- Location: Hydraulic Sys
- Stage of operation: CR
- 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/AALA20170501004

## Discrepancy

AIRCRAFT WAS GROUNDED.  EMERGENCY DECLARED.  DFW-SNA FLIGHT DIVERTED TO ELP ACCOUNT PASSENGERS IN ROWS 17 AND 18 REPORTED THUMPING NOISE COMING FROM FLOOR, LANDING UNEVENTFUL.  INSPECTED AIRCRAFT AND FLIGHT CONTINUED TO SNA.  FOUND A LOOSE B-NUT AND MISSING CLAMP ON THE LEFT HYDRAULIC RESERVOIR HEAD PRESSURE LINE.  TIGHTENED B-NUT AND INSTALLED CLAMP ( AALA201705039010).  NO OTHER DEFECTS NOTED.  OPERATIONAL CHECK GOOD.

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