# SDR MWEA020265

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2002
- Submitted: April 23, 2002
- Operation: Air carrier
- Aircraft: N809ME
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 48071
- Aircraft time: 39,319 hours, 40,511 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Powerpack
- Part number: 59140665561
- Condition: Faulty
- Location: Rudder
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MWEA020265

## Discrepancy

PRIOR TO DESCENT FROM FL370, THE RUDDER PEDAL AUTHORITY DEGRADED TO THE POINT OF REQUIRING SIGNIFICANT RUDDER PEDAL DISPLACEMENT TO YAW THE AIRCRAFT.  THE RUDDER TRIM WOULD MOVE, BUT REQUIRED EXCESSIVE FORCE.  THE CONDITIONS CONTINUED UNTIL PASSING 15,000 FT IN THE DESCENT.  BOTH RUDDER AND TRIM RETURNED TO NORMAL AND RUDDER LIMITER OPERATES NORMAL.  REMOVED AND REPLACED RUDDER POWER PACK IAW MD80 AMM 27-20-8-4.  PERFORMED ADJ/TEST OF 27-20-8-4 STEPS 4A1-19, COMPLETED ADJ/TEST OF 27-20-8-4 STEPS 20 & 21.  OPERATION OK AT THIS TIME.

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