# SDR AALA20160220004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2016
- Submitted: February 24, 2016
- Operation: Air carrier
- Aircraft: [N933AN](https://openairdocs.org/aircraft/N933AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30080
- Aircraft time: 47,344 hours, 19,259 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Bearing
- Condition: Worn
- Location: Horiz Stab
- 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/AALA20160220004

## Discrepancy

CLIMBING THROUGH 18,000 FEET, AT 280 KNOTS WITH THE NR 1 AUTO PILOT ENGAGED, A DISTINCT & PRONOUNCED BOUNCE & VIBRATION SET UP IN THE LONGITUDINAL AXIS OF THE ACFT.  VIBRATION REDUCED WHEN SPEED DECREASED.  THE FLIGHT DECLARED AN EMER & DIVERTED WITHOUT FURTHER INCIDENT.  THE ACFT WAS GNDED.  REPLACED LT & RT HORIZONTAL STABILIZER CTR HINGE FITTING BEARINGS IAW ROUTINE CARDS 27-94-11 12.  SEE ALSO SDR AALA 20160525001 & AALA 20160525002.

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