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🔥 '''Engine failure''' in the context of [[Definition:Aviation insurance | aviation insurance]] refers to the partial or complete loss of power from an aircraft engine due to mechanical malfunction, material defect, foreign object damage, or other causes — an event that can trigger some of the most significant and technically complex [[Definition:Insurance claim | claims]] in the aviation [[Definition:Underwriting | underwriting]] market. Modern jet engines represent an enormous concentration of value, with a single engine on a widebody aircraft carrying a replacement cost that can run into tens of millions of dollars. For [[Definition:Insurer | insurers]], engine failures encompass a spectrum from contained malfunctions requiring shop-level repair to catastrophic uncontained failures that can damage the airframe, injure passengers, or cause a [[Definition:Total loss | total loss]] of the aircraft.

⚙️ When an engine failure occurs, the [[Definition:Insurance claim | claims]] process involves coordination among the airline's [[Definition:Insurance broker | broker]], the [[Definition:Hull insurance | hull all-risks]] underwriters, the engine manufacturer, and often third-party [[Definition:Aircraft maintenance | MRO]] providers who last serviced the engine. An [[Definition:Aviation surveyor | aviation surveyor]] is typically appointed to inspect the failed engine, determine the cause, and estimate repair or replacement costs. The scope of coverage depends on the [[Definition:Policy wording | policy wording]]: standard hull all-risks policies cover sudden and accidental physical damage, including engine failures, subject to applicable [[Definition:Deductible | deductibles]] — which in aviation are often structured as time-based or per-occurrence amounts. Engines leased separately from the airframe (a common arrangement in the aviation finance market) may be covered under separate [[Definition:Spares and equipment insurance | spares all-risks]] policies or under the lessee's hull policy with specific engine endorsements. [[Definition:Subrogation | Subrogation]] against the engine manufacturer or MRO provider is frequently pursued when the failure is traced to a design defect or maintenance error, and these recoveries can be substantial given the values involved.

📊 Fleet-wide engine issues have historically generated some of the largest aggregate losses in [[Definition:Aviation insurance market | aviation insurance]]. When a particular engine model is found to have a systemic defect — as occurred with certain Pratt & Whitney geared turbofan engines requiring accelerated inspections and shop visits across hundreds of aircraft globally — the resulting claims can cascade through the [[Definition:Reinsurance | reinsurance]] market and reshape capacity and pricing for entire aviation portfolios. [[Definition:Aircraft lessor | Lessors]] and [[Definition:Aircraft finance | financiers]] are acutely sensitive to engine reliability, and financing agreements typically require that engine maintenance be performed only by approved MRO providers. For [[Definition:Underwriter | underwriters]], the engine type, maintenance program, operator history, and manufacturer support arrangements are all critical inputs into the [[Definition:Risk assessment | risk assessment]] of an aviation account. The increasing complexity and cost of modern engines, combined with supply chain constraints affecting replacement parts, has heightened the financial impact of engine failures and reinforced the centrality of this exposure within the aviation insurance landscape.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Aviation insurance]]
* [[Definition:Hull insurance]]
* [[Definition:Aircraft maintenance]]
* [[Definition:Aviation surveyor]]
* [[Definition:Total loss]]
* [[Definition:Subrogation]]
{{Div col end}}

Definition:Engine failure - Revision history

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