# SDR AALA20020077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2002
- Submitted: March 5, 2002
- Operation: Air carrier
- Aircraft: [N759AN](https://openairdocs.org/aircraft/N759AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 32638
- System (JASC): [2460 · DC Power Distribution System](https://openairdocs.org/jasc/2460)
- Part: Circuit Board
- Condition: Failed
- Location: Electrical
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20020077

## Discrepancy

LHR - FLT 131 - ONE HOUR AND 20 MINUTES INTO FLIGHT RIGHT MAIN AC BUSS FAILED WITH THE FOLLOWING EICAS MSGS.  BULK AFT CARGO HEAT, ELMSP210 PANEL, RAT GEN HEAT, AIR GRNG R, RECIRCULATION FAN.  DIVERTED TO LHR, DECLARED EMERGENCY, LANDING WEIGHT 452,00.  TROUBLE SHOT AS PER FIM AND REPLACED ELEC UNIT CIRCUIT CARD M24403A3 AS PER MM 24-09-00-2.  ALL MESSAGES CLEARED.  ENGINE RUN COMPLETED WITH ELEC LOAD TRANSFER.  ALL ELEC SYSTEM OPS AND INDICATOR NORMAL.  (M)

---
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.