# SDR AALA202512028370

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2025
- Submitted: December 2, 2025
- Operation: Air carrier
- Aircraft: [N339TP](https://openairdocs.org/aircraft/N339TP), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 44486
- Aircraft time: 6,565 hours, 2,457 cycles
- System (JASC): [2721 · Rudder Tab Control System](https://openairdocs.org/jasc/2721)
- Part: Ptu
- Part number: 4193001003
- Part serial: 41930008911
- Condition: Failed
- Location: Zone 300
- Part time: 6,568 hours, 2,459 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202512028370

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING TAKEOFF AT APPROXIMATELY 100KTS DUE TO A VERY HARD YAW TO THE RIGHT THEN A REVERSAL TO THE LEFT. FELT LIKE WE POSSIBLY HAD A FLIGHT CONTROL ISSUE WITH THE RUDDER. FIRST OFFICER SAID THE FOOT PEDALS FELT LIKE THEY MAY HAVE GOTTEN STUCK TEMPORARILY. AIRCRAFT ABORTED TAKEOFF SAFELY AT MIA. REMOVE AND REPALCED NUMBER 1 (SMYD)-STALL MANAGEMENT YAW DAMPER MODULE (AALA202511187613), PER AMM 27-32-42. ALSO, REMOVE AND REPALCED MAIN RUDDER PCU, PER AMM 27-21-91. OPERATIONAL LEAK AND CHECK GOOD.

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