At the end of July 2015, the 50 largest aircraft leasing companies managed 8,184 aircraft: 511 regional turboprops, 792 regional aircraft, 5,612 narrow-bodied aircraft and 1,253 wide-body aircraft.  In 2017, the 150 leasers manage 8,400 aircraft worth $256 billion with 2,321 aircraft behind 28, whose penetration has stabilized at 42.6%.  Aircraft rental companies are often banks, hedge funds or financial institutions. With an aggressive growth mandate, more aggressive and smaller operators, many of their assets in the sales and leasing markets have overpaid and are then underpaid on rents to gain activity, with maintenance reserves and lower yield conditions: leasing rate factors have fallen to 0.6% per month (7.2% per year) and are even reached at 0.55% (6.6% per year).  The aviation industry was devastated by the Covid 19 pandemic. The pandemic has raised health fears around the world and, with the many travel restrictions imposed by many countries, passenger bookings have dropped dramatically. As a result, many commercial airlines have brought a large part of their fleet to Dener. Airlines have taken drastic measures, such as implementing wage cuts, cancelling air routes and providing unpaid leave for staff to preserve their cash flow. Given the uncertainty about the recovery date of the sector, airlines are now facing difficult decisions about how to allocate their remaining reserves.
Airlines that have leased aircraft would have significant rent payment obligations to landlords that they may not be able to hold while their fleet is on the ground. If the underwriters are unable to meet their payment obligations under their leases, this would make it more difficult to meet their financial obligations to their investors and financiers to the leasing companies. In 2007, Beijing allowed Chinese banks to launch leasing units and nine Chinese lenders were among the top 50 in 2017, led by ICBC Leasing in the top 10, with the value of their managed fleet increasing by 15% since 2016.  In some cases, Chinese owners forgot that they had to receive a secondary lease and missed the time of re-delivery when they failed planes for a few months.  Owners prefer narrow bodies to Widebodies because of more remarketing opportunities and considerable processing time and cost a larger aircraft. The redevelopment of an Airbus A330-300 can cost $7 million or more for a Boeing 777-300ER or An Airbus A380: IFE launch – $1.5 million ($5,000 per seat) and Replacement of business seats – $1.5 million (US$30,000 each) and replacement of economy seats – $1 million (US$5,000 each), a new toilet or galley – $100,000 , Transfer of a monument – $35,000, class divider – $50,000, Person service units – $9,000 per passenger, sidewall coatings – $6,000, UPDATEd IFE database – $125,000, repainted aircraft – $100,000, engineering cost – $100,000.  In the United Kingdom, wet ground leasing is the case when an aircraft is operated in accordance with the owner`s Air Operator Certificate (AOC).  An agreement in which the owner makes available the aircraft, flight crew and maintenance, but the taker provides cabin crew, is sometimes referred to as “damp-leasing,” a term used specifically in the United Kingdom.