# SDR P5CA2014072300021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2014
- Submitted: July 24, 2014
- Operation: Air carrier
- Aircraft: [N452PA](https://openairdocs.org/aircraft/N452PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30810
- Aircraft time: 59,142 hours, 9,725 cycles
- System (JASC): [5520 · Elevator Structure](https://openairdocs.org/jasc/5520)
- Part: Bearing
- Part number: BACB10AR6
- Condition: Migrated
- Location: Elevator
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2014072300021

## Discrepancy

AUTOPILOT OSCILLATES AT 1500 FT, COUPLED APPROACH DISCONNECTED.  GROUND TEST ELEVATOR SERVO PASS AND AUTOLAND & UNIQUE TEST PASS IAW AMM 22-10-00/501.  ON INSPECTION IAW FIM 22-10, TASK 843,  FOUND RT BEARING OF ELEVATOR CONTROL ROD AT AFT QUADRANT MIGRATED.  REPLACED BEARING IAW AMM 27-31-00/001 AND OPS CHECKED OK IAW AMM.

---
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.