United B788 near Ottawa on Dec 4th 2018, variable frequency starter generator failure

Last Update: December 7, 2018 / 21:16:30 GMT/Zulu time

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Incident Facts

Date of incident
Dec 4, 2018

Classification
Incident

Airline
United

Flight number
UA-807

Departure
Washington Dulles, United States

Destination
Beijing, China

Aircraft Registration
N28912

Aircraft Type
Boeing 787-8 Dreamliner

ICAO Type Designator
B788

A United Boeing 787-8, registration N28912 performing flight UA-807 from Washington Dulles,DC (USA) to Beijing (China), was enroute at FL370 about 70nm north of Ottawa,ON (Canada) when the crew decided to divert to San Francisco,CA (USA) to refuel the aircraft and change crew. The aircraft landed safely in San Francisco about 5 hours later.

The Canadian TSB reported shortly after departure the L1 variable frequency starter generator (VFSG) failed. The applicable procedure required the continuous use of the APU for the remainder of the flight. However, the continuous use of the APU for the 12 hours of the flight together with the normal fuel burn of both engines required more fuel to reach the destination than was on board. The crew therefore decided to divert to San Francisco, where the L1 VFSG was deactivated according to the minimum equipment list requirements.

The occurrence aircraft remained on the ground in San Francisco for about 3:45 hours, then continued the journey and reached Beijing with a delay of 8:15 hours.
Aircraft Registration Data
Registration mark
N28912
Country of Registration
United States
Date of Registration
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Manufacturer
BOEING
Aircraft Model / Type
787-8
Number of Seats
Qjk Subscribe to unlock
ICAO Aircraft Type
B788
Year of Manufacture
Ilkq Subscribe to unlock
Serial Number
Nfcch Subscribe to unlock
Aircraft Address / Mode S Code (HEX)
f pAm Subscribe to unlock
Engine Count
P Subscribe to unlock
Engine Manufacturer
Lh Subscribe to unlock
Engine Model
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Engine Type
LAkiiAcke Subscribe to unlock
Pounds of Thrust
Pcbch Subscribe to unlock
Main Owner
HjikfbjknmnehnkpApgn effAnhnmgnehnlcicekjqAfjkglegn qmAmhjh qcifmcqkdkfb Subscribe to unlock
Incident Facts

Date of incident
Dec 4, 2018

Classification
Incident

Airline
United

Flight number
UA-807

Departure
Washington Dulles, United States

Destination
Beijing, China

Aircraft Registration
N28912

Aircraft Type
Boeing 787-8 Dreamliner

ICAO Type Designator
B788

This article is published under license from Avherald.com. © of text by Avherald.com.
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