Assertion: airline's cost | /r/HasProperty | aircraft maintenance
Facets:
value: for 44%
type: TRANSITIVE-OBJECT
value: primarily
type: DEGREE
Source sentences:
text: Operating costs for US major airlines are primarily aircraft operating expense including jet fuel, aircraft maintenance, depreciation and aircrew for 44%, servicing expense for 29% (traffic 11%, passenger 11% and aircraft 7%), 14% for reservations and sales and 13% for overheads (administration 6% and advertising 2%).