# SDR P5CA0801543

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2008
- Submitted: February 14, 2008
- Operation: Air carrier
- Aircraft: [N454PA](https://openairdocs.org/aircraft/N454PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30812
- Aircraft time: 25,661 hours, 4,180 cycles
- System (JASC): [2400 · Electrical Power System](https://openairdocs.org/jasc/2400)
- Part: Rccb
- Part number: BACC18AF60
- Part serial: 50150
- Condition: Multiple Fail
- Stage of operation: CL
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: L, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0801543

## Discrepancy

AIR TURN BACK DUE TO MULTIPLE ELECTRICAL FAILURES.  NR 1 COMMUNICATION PANEL, E/E COOLING CARD, T/E FLAPS/FLAPS PRIMARY, ELEC BCU 1, ALL FUEL CROSSFEED MSG'S, CREW O2 LOW, YAW DAMPER LOWER, FUEL TANK TO ENGINE, TORQUE LIMITER, FUEL PUMP 2 STATUS MESSAGES APPEARED.  FWD FUEL PUMP 2 FAILED AND RESET.  REPLACED RELAY NR R7224 IAW MM 24-33-01 AND RCCB NR C2243 IAW MM 24-33-01 AND 24-60-01.  FUNCTIONAL CHECKS SATISFACTORY.  REMOVED AND REPLACED BATTERY TFR RELAY AND RCCB, PN 9131-8506 AND BACC18AF60; SN 12151 AND 50150.

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