# SDR DL76L961302

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N173DN
- Make and model: Boeing 767332
- Aircraft serial: 24800
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Failed
- Location: Right
- Component: 4058650930
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL76L961302

## Discrepancy

RT FMC LOCKED UP THEN LEFT FMC LOCKED.  AFTER A PERIOD OF TIME, BOTH RESUMED NORMAL OPERATION FOR APPROXIMATELY 2 MINUTES, THEN RT FMC FAILED.  THEN LEFT FMC FAILED.  RE-PROGRAMMED ALL DATA IN FMC.  AFTER APPROXIMATELY 2 MINUTES, BOTH FMC'S FAILED AGAIN.  ON ARRIVAL NYC, REGAINED RT FMC AND THEN LEFT FMC.  ON APPROACH, LT FMC FAILED AGAIN.  CORRECTIVE ACTION:   REPLACED RT MCDU WITH TWA POOL PART.  PERFORMED TEST OF FMS SYSTEMS ALL OK.

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