Hull loss

A hull loss is an aviation accident that damages the aircraft beyond economical repair,[2] resulting in a total loss. The term also applies to situations in which the aircraft are missing, the search for their wreckage is terminated or when the wreckage is completely inaccessible.[3]

Number of fatalities from airliners' hull loss accidents per year (1940–2017)
Wreckage of Asiana Airlines Flight 214, which was written off as a hull-loss accident[1]

"Hull losses per 100,000 flight departures" has been a long-used statistical criterion.[2] From 1959 to 2006, the first part of the mainstream jet aircraft era, 384 of 835 hull losses, or 46%, were nonfatal.[4] Airlines typically buy insurance to cover hull loss on a twelve-month basis. Before the September 11 attacks in 2001, the typical insured sum for a hull loss policy could reach $250 million. Since then demands for higher coverage have increased.

Constructive hull loss factors other incidental expenses beyond repair, such as salvage, logistical costs of repairing the non-airworthy aircraft within the confines of the incident site, recertifying the aircraft, and so forth. Insurance policies covering any asset that is subject to depreciation typically pay the insured a formulaic used item value, so the property will often be a write-off as full repairs plus this sum resemble a cost of a new replacement.

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