Spare Parts Inventory

12 Months Ended

Dec. 31, 2015

Spare Parts Inventory [Abstract]

Spare Parts Inventory

(4) Spare Parts Inventory

Inventory consists of spare aircraft and engine parts and is stated at lower of cost or net realizable value. An impairment charge for excess or inactive inventory is recorded based upon an analysis that considers current inventory levels, historical usage patterns, future sales expectations and salvage value.