From Stockholm Arlanda Airport extranet:
"In conjunction with the introduction of its B787-8, British Airways has applied for an exemption to use an auxiliary power unit (APU) throughout the turnaround process as recommended by Boeing."
Link:
AI-121-2013 Exemption for use of APU - Swedavia Extranet
Anybody who knows the reason/s why behind "...as recommended by Boeing..."?
(BA is using the B787 on one flight between LHR-ARN-LHR per day during 09AUG-21SEP13 as part of the introduction of the aircraft)