Boeing Tackles 787 APU Heating Issue

By Guy Norris guy.norris@aviationweek.com
Source: AWIN First

The revised procedure also has connections with the operation of one of the 787’s two lithium-ion batteries. The notice contains a precautionary note that advises against using the APU battery power to keep the door open as this will “only have about 15 min. before being discharged.” It adds that ground power must be used to keep the APU door open for 40 min. and warns that, if this is disconnected, the door will close even with the APU switch on the flight deck remaining in the ‘open’ position.

Boeing declines to specify the design changes that will be made to improve the cooling and ventilation of the APU compartment.

In the meantime, Boeing continues to modify the battery system on the last of the original 50 aircraft delivered up to the grounding in January. As of May 21, the company had completed work on 45 of which 40 had flown. It has also delivered the first two new 787s with the revised battery systems installed as new while still at the Everett production site.

United Airlines resumed 787 flights on May 20 with a service between Houston and Chicago. The airline, which currently has six 787s, expected to bring its complete fleet back into service within days and will launch international flights with the aircraft on June 10 with a service from Denver International Airport to Narita International Airport in Tokyo. Other long haul flights from Los Angeles International Airport to Shanghai Pudong International Airport and George Bush Intercontinental Airport in Houston to London Heathrow Airport will be added in the summer months.

ANA will resume services with its 18-strong 787 fleet from June 1, and plans to introduce the type on additional international routes later this summer including Narita to Beijing Capital International Airport and Shanghai and Tokyo Haneda Airport to Taiwan Taoyuan International Airport.

This increase will increase to five the overseas destinations served by ANA’s 787 fleet.

Japan Airlines, which operates seven 787s, also is expected to resume flights on June 1, while Ethiopian Airlines became the first to operate the 787 on a commercial service since the grounding when it flew the aircraft between Addis Ababa Bole International Airport and Jomo Kenyatta International Airport in Nairobi on April 27.

LOT Polish Airlines is scheduled to return its aircraft to service on June 5 with a flight from Warsaw Chopin Airport to Chicago O’Hare International Airport, while Qatar Airways resumed 787 services with a flight from Doha International Airport to Dubai International Airport on May 2.


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