# SDR P5CA2011071500064

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2011
- Submitted: July 18, 2011
- Operation: Air carrier
- Aircraft: [N454PA](https://openairdocs.org/aircraft/N454PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30812
- Aircraft time: 41,007 hours, 6,450 cycles
- System (JASC): [2760 · Drag Control System](https://openairdocs.org/jasc/2760)
- Part: Bearing
- Part number: 33205505
- Part serial: 4938
- Condition: Worn
- Location: Spoiler
- Part time: 41,007 hours, 6,450 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A, O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2011071500064

## Discrepancy

DURING INITIAL CLIMB,  A RHYTHMIC VIBRATION IN AIRFRAME WAS FELT.  ALSO FELT & NBSP; THROUGH LEVEL OFF AND CRUISE.  ACCOMPLISHED CONDITIONAL INSPECTION IAW AMM 05-51-38-201 & SERVICE LETTER 747-SL-02-005-F.  NR 4 SPOILER WAS FOUND TO HAVE EXCESSIVE PLAY AND THE RIGHT BODY GEAR STRUT FIXED BRACKET BEARING WAS WORN.  THE SPOILER CONTROL PACKAGE WAS REPLACED IAW AMM27-61-05.  THE BRACKET WAS ALSO REPLACED IAW AMM 32-14-06.  ALL CHECKS WERE NORMAL.

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