# Incident 20120911025929I: Boeing 747-281F, Anchorage, AK, September 11, 2012

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: September 11, 2012, 01:15 local time
- Place: Anchorage, AK
- Airport: Anchorage International
- Damage: Minor damage
- Phase of flight: Cruise/Level Flight
- Operating rules: Air carrier (Part 121)
- Operator: Q2SA
- Location: 61.2181° N, 149.9003° W: Placed by OpenAirDocs: center of Anchorage, AK, within about 23 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=61.2181&lon=-149.9003&mi=10
- Aircraft: N783SA (not matched to a registry record)
- Reported make and model: BOEING 747-281F
- Reported engine: GE CF6-50E2
- People aboard: 5
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport, flight instructor
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20120911025929I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

AT APPROXIMATELY 0115 LOCAL, A SOUTHERN AIR B-747-200 AIRCRAFT, ENROUTE FROM MIAMI TO ANCHORAGE DECLARED AN EMERGENCY DUE TO COMPLETE LOSS OF ELECTRICAL POWER.  THE AIRCRAFT LANDED AT APPROXIMATELY 0145 LOCAL ON RUNWAY 7L, BUT BECAME DISABLED WHEN 13 OF 16 MAIN LANDING TIRES BLEW.  PRIOR TO THE FLIGHT, MAINTENANCE PERSONNEL INSERTED CARDBOARD BLANKING PLATES INTO EACH OF THE FOUR GENERATOR COOLING DUCTS TO PREVENT CAUSTIC CHEMICALS FROM DAMAGING THE GENERATORS DURING ENGINE COKE WASHES. THE BLANKING PLATES WERE NOT REMOVED AFTER THE ENGINE WASHES. THIS RESULTED IN THE OVERHEATING AND SUBSEQUENT FAILURES OF ALL FOUR ENGINE GENERATORS DURING FLIGHT.  THE GENERATOR FAILURES OCCURED AT OR GREATER THAN 30 MINUTE INTERVALS (NOT SIMULTANEOUSLY) SPACED OUT OVER THE ENTIRE 7 PLUS HOUR FLIGHT. THE FIRST FAILURE OCCURING APPROXIMATELY 4 HOURS INTO THE FLIGHT WITH THE FINAL OF THE FOUR GENERATOR FAILURES AT APPROXIMATELY 7 PLUS HOURS INTO THE FLIGHT.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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