Boeing gives green light for AlliedSignal APU development

The new 331-400B APU (developed from the company's proven 331-350 unit, which has more than 600,000 hours' service on Airbus A330 and A340 aircraft) will provide up to 40% more power for the 767-400 - with a less than 13% weight penalty - compared with the APU on earlier versions ...

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