Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Accrued maintenance liability

v3.21.2
Accrued maintenance liability
6 Months Ended
Jun. 30, 2021
Accrued Maintenance Liability [Abstract]  
Accrued maintenance liability Accrued maintenance liability
Movements in accrued maintenance liability during the six months ended June 30, 2021 and 2020 were as follows:
Six Months Ended June 30,
2021 2020
Accrued maintenance liability at beginning of period $ 1,750,395  $ 2,190,159 
Maintenance payments received 163,280  194,779 
Maintenance payments returned (91,957) (208,630)
Release to income upon sale (13,587) (86,592)
Release to income other than upon sale (140,047) (224,207)
Lessor contribution, top-ups and other (19,887) 65,365 
Accrued maintenance liability at end of period $ 1,648,197  $ 1,930,874