Hourly cost maintenance (HCM) programmes are a mechanism where the owner pays a fixed sum for every flight hour and the provider takes on the cost of future repairs. This turns a sudden million-dollar outlay into a predictable budget line. Below we cover which programmes exist for each component, who provides them, how they work and how factory schemes differ from independent ones.
How it works
The mechanics are simple: for every hour flown the owner remits a rate calculated for the specific engine model and operating conditions. Funds accumulate, and when an event occurs — a hot section, an overhaul, a component replacement — the provider pays for labour and parts under the contract terms.
One point is often misunderstood: a maintenance programme is not insurance. It does not cover random risks but spreads over time the scheduled and unscheduled costs that will arise anyway. Hence the rule: the earlier an aircraft enrols, the smoother the rate.
The term traces back to the Power by the Hour concept, first applied in aero engine support and since become an industry standard in business aviation.
Engine programmes: factory schemes
Every major engine manufacturer offers its own programme. At Pratt & Whitney Canada this is the Eagle Service Plan (ESP) — a pay-per-hour plan that historically had up to four or five coverage levels and is now being consolidated toward two. ESP has no annual minimums and transfers with the aircraft at sale.
Rolls-Royce offers CorporateCare and the extended CorporateCare Enhanced, introduced in 2018 for the BR710, BR725 and Pearl 15 engines. Rolls-Royce engines power more than 4,000 business aircraft. The enhanced version covers not only the core engine but the nacelle, inlet and thrust reverser, including a loaner engine and on-wing support for AOG events.
Honeywell runs its Maintenance Service Plan (MSP) across three levels — MSP, MSP Gold and MSP Gold NRL — covering both engines and auxiliary power units. GE Aerospace fills the same role with OnPoint, and Williams International with its TAP family of plans.
Coverage levels
Programmes come in tiers, and the differences are material. The basic level typically covers scheduled work and life-limited parts. Higher levels add labour for removal and reinstallation of engines and LRUs, freight both ways, extended troubleshooting, a loaner engine during shop visits and AOG support.
The choice of level depends on aircraft age and utilisation. The industry trend in recent years is simplification: manufacturers report declining interest in less inclusive plans and are concentrating on the upper tiers, where predictability is greater.
Independent providers: JSSI and alternatives
The main alternative to factory programmes is independent providers. The largest, Jet Support Services (JSSI), has operated since 1989 and provides hourly programmes for engines, APUs and airframes on virtually any make and model — over 325 aircraft types across Pratt & Whitney, Honeywell, GE and Rolls-Royce platforms.
The advantage of independence is practical: a single contract can cover a mixed fleet from different manufacturers, and the owner is not tied to one factory's service network. The Tip-to-Tail programme bundles engine, airframe and APU into single-source coverage; the separate JSSI Parts & Engines arm holds more than 100,000 stocked items and supports around 10,000 maintenance events a year.
There are niche players too. The Engine Assurance Program (EAP) specialises in older, out-of-production engines still flying on some fifteen aircraft types — precisely where factory programmes are often no longer available.
APU programmes
The auxiliary power unit is covered on the same logic. Honeywell — the largest APU manufacturer in business aviation — covers them within MSP, while independent providers include APUs in bundled packages. A separate item programmes account for is replacement of life-limited parts once they reach their limit.
Economically an APU is cheaper than an engine, but a failure at the wrong moment can ground the aircraft: without it there is no autonomous start or air conditioning on the ramp. So APU coverage is usually taken together with engine coverage rather than separately.
Airframe programmes
Here it is the aircraft manufacturers that offer the programmes. Bombardier runs Smart Parts and Smart Services, covering parts, inspections and service bulletins, with long-term price guarantees and labour on scheduled work when using the Bombardier network.
Gulfstream offers PlaneParts — a cost-per-hour programme under which the operator receives replacement components for parts removed due to failure, wear or life limit, in exchange for monthly payments based on the aircraft's model and age.
Dassault runs FalconCare — a three-tier programme covering scheduled and unscheduled maintenance, parts, consumables and service bulletins up to and including C inspections, with AOG on-site coverage. Textron offers the ProAdvantage family for Cessna Citation aircraft.
Propellers: a special case
Turboprop aircraft add a propeller with its own overhaul interval. Per AOPA, typical propeller TBO ranges from 1,000 to 2,000 flight hours and five to seven years depending on model, whichever comes first.
The calendar limit matters more than hours here: at 100 hours a year it would take twenty years to reach 2,000 hours, while corrosion and seal ageing progress regardless of use. Manufacturers publish specific limits in service documents — for example, Hartzell in service letter HC-SL-61-61Y.
Dedicated hourly propeller programmes are less common than engine ones: exchange pools and manufacturer or certified-station schemes are used more often. Intervals are lengthening — for instance, TBO for MT-Propeller's five-blade MTV-27 series has been extended to 4,000 hours or six years.
What an event costs without a programme
The point of programmes becomes obvious in the numbers. A hot section on a PW305 or equivalent work on a Honeywell engine is put by industry specialists at $700,000–800,000 per side. An overhaul of the PW545 engines on a Citation XLS, which around 2019 fitted within a million dollars per engine, is now budgeted at roughly double.
Parts inflation has accelerated: where the historical rise was around 5% a year, the industry has faced 12–14%. For an owner this means deferred repairs get more expensive faster than self-funded reserves accumulate — an argument for a fixed rate.
Effect on aircraft value
Programmes directly affect resale liquidity. Coverage transfers to the new owner with the aircraft, and buyers pay a premium for a clear cost schedule instead of an unknown date and amount for a future overhaul. Lenders treat enrolment as a collateral-value factor, not merely an owner convenience.
The practical takeaway for a seller: an aircraft without a programme competes on price, an aircraft with transferable coverage competes on predictability. In a pre-owned market where about 6.5% of the active fleet is listed against a ten-year average of 8.1%, that distinction noticeably affects how fast a deal closes.
Pitfalls
First: a programme is not insurance, and the contract must be read. Terms vary on foreign object damage (FOD), corrosion, life-limited parts, annual minimum hours and the buy-in fee for an older aircraft. Second: some programmes require servicing within a specific manufacturer's network, which limits the choice of shop.
Third: the economics depend on utilisation. At very low usage the fixed payments can exceed actual costs; at high usage the programme wins. Fourth: enrolling an older aircraft costs more, as the provider prices in accumulated wear.
How to verify programme status at purchase
During a pre-purchase inspection, programme status is confirmed on paper rather than on the seller's word. Buyers request the provider contract itself, a statement showing the current account position and no arrears, confirmation that coverage transfers to the new owner, and a list of what the enrolled tier actually includes.
Programme data is separately reconciled against the logbooks and the maintenance tracking system: discrepancies in hours and cycles between the provider's report and the aircraft records are a classic finding that otherwise surfaces after closing. It is also worth confirming whether the provider must consent to the transfer and whether a fee applies.
How to choose
Selection follows from three inputs: engine and aircraft type, planned annual hours and ownership horizon. A factory programme usually wins on new aircraft during the warranty period and where servicing happens in the manufacturer's network. An independent one wins on mixed fleets, older aircraft and where freedom to choose a shop matters.
JetHunter takes programme status into account when assessing an aircraft for purchase or sale: transferable engine, APU and airframe coverage is one of the first checks alongside total time, maintenance history and logbook records. The absence of a programme is not a deal-breaker, but it is a direct argument in negotiation.
«An engine programme is not insurance but a way to turn an unpredictable million-dollar bill into a clear per-hour payment. At resale a buyer pays a premium for that predictability, and it often exceeds everything the owner put in.»
— Alexey Mordvintsev, CEO of JetHunter
Author: Alexey Mordvintsev, CEO of JetHunter, President of the Association of Professionals of Executive Aviation Industry (APIDA). Over 14 years in the industry.
