# SDR UIEA2024032800229

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2024
- Submitted: March 29, 2024
- Operation: Air carrier
- Aircraft: [N453PA](https://openairdocs.org/aircraft/N453PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30811
- Aircraft time: 91,370 hours, 15,768 cycles
- System (JASC): [2700 · Flight Control System](https://openairdocs.org/jasc/2700)
- Part: Unknown
- Condition: Faulted
- Stage of operation: LD
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2024032800229

## Discrepancy

DURING TAKEOFF NOTICED UNCOMMANDED ROLLING, ALSO ON LANDING AIRCRAFT ROLLED UNCOMMANDED TO LEFT.(<P>ABNORMALITY PRESSURIZED HYD, & TRIM RUDDER TO NEUTRAL, RUDDER & RUDDER TRIM CONTROL SYS OPS CHECK NORMAL PER AMM 27-21-00 WITH FULL FLAP FULL UP, SPOILER OPS & IND CHECK NORMAL PER AMM 27-61-00. CHECKED ALL SPOILER DIFFERENTIAL SHEAR RIVETS AND MECHANISM, NO FAULT FOUND PER AMM 27-61-03. DID PHYSICAL DOUBLE CHECK OF SYS LOG ITEM, NO ABNORMALITY WAS FOUND. PERFORMED SPOILER ACTUATOR FUNCTION TEST PER AMM 27-61-00, TEST PASSED, BUT RH SPOILER MOVED FASTER THAN LH DURING DEPLOY. PERFORMED ADJUSTMENT OF SPOILER CONTROL SYS PER AMM 27-61-00. ALL RIGGING CHECK SATISFIED. T/E FLAPS EXTEND 20 DETENT, SPOILER OPS CHECK NORMAL PER AMM 27-61-00. AILERON OPS CHECK NORMAL PER AMM 27-11-00.</P>)

---
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.