Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Accrued maintenance liability

v3.8.0.1
Accrued maintenance liability
12 Months Ended
Dec. 31, 2017
Accrued Maintenance Liability [Abstract]  
Accrued maintenance liability
Accrued maintenance liability
Movements in accrued maintenance liability during the years ended December 31, 2017 and 2016 were as follows:
 
Year Ended December 31,
 
2017
 
2016
Accrued maintenance liability at beginning of period
$
2,750,576

 
$
3,185,794

Maintenance payments received
756,314

 
794,711

Maintenance payments returned
(523,403
)
 
(505,407
)
Release to income upon sale
(275,360
)
 
(341,161
)
Release to income other than upon sale
(302,408
)
 
(421,332
)
Lessor contribution, top ups and other
42,379

 
8,315

Interest accretion
13,701

 
26,563

Additions due to aircraft acquisitions

 
3,093

Accrued maintenance liability at end of period
$
2,461,799

 
$
2,750,576