# SDR AALA2019080219003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2019
- Submitted: August 3, 2019
- Operation: Air carrier
- Aircraft: [N558UW](https://openairdocs.org/aircraft/N558UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5282
- Aircraft time: 23,335 hours, 9,343 cycles
- System (JASC): [3140 · Central Computers](https://openairdocs.org/jasc/3140)
- Part: Computer
- Part number: 1982660116
- Part serial: 198266017362
- Condition: Unreliable
- Location: Display Manage
- Part time: 16,113 hours, 6,269 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019080219003

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT ABORTED T/O FOR LEFT ENG N2 OVERSPEED. ABORT SPEED 110KTS. MAINTENANCE REPORTS DISPLAY MANAGMENT COMPUTER 1 INDICATES N1 OVERSPEED, DFDR DOWNLOAD COMPLETE IAW JOB CARD 26T000031001, INDICATES NO OVERSPEED. MAINTENANCE REMOVED AND REPLACED DISPLAY MANAGMENT COMPUTER 1 (1WT1) IAW TSM 77-00-00-810-868-A AND AMM 31-63-34-400-001-A. PERFORMED CAT III LAND TEST IAW AMM 22-97-00-710-001-A. TEST OK.

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