# SDR UIEA9912

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N493MC](https://openairdocs.org/aircraft/N493MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29254
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Logic Card
- Part number: 285U0143201
- Condition: Failed
- Location: Fuel System
- Stage of operation: TO
- Nature of condition: N
- Precautionary procedure: C, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA9912

## Discrepancy

ATO - FLT CV7746/27 - TAKEOFF ABORTED AT 70 KNOTS DUE NR 4 FUEL SPAR VALVE STATUS MESSAGE EICAS AND CIRCUIT BREAKERS TRIPPED.  RETURNED TO RAMP.  DURING TROUBLESHOOTING.  MAINTENANCE DETERMINED THAT FUEL SPAR VALVE POSITION LOGIC CARD NR 12, PN 285U0143-201, WAS DEFECTIVE.  REPLACED LOGIC CARD AND OPERATION NOW NORMAL.  (X)

---
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.