Many piston-airplane constant-speed propellers have manufacturer-recommended overhaul intervals around 2,000 to 2,400 flight hours or five to six years, whichever comes first, although some models have shorter limits. For budgeting, a typical two-blade aluminum propeller overhaul can cost roughly $3,000 to $6,000 in 2026, with substantially higher bills possible if blades or hub components need replacement.
That spread is not random. It comes down to how many blades you have, what they are made of, whether the blades survive the inspection or get scrapped, and whether anyone remembered to budget for the governor. Below is every line that shows up on a real propeller shop invoice, with honest ranges for each one.
What the Manufacturers Actually Recommend
A constant-speed propeller works like the transmission in your car. It changes blade angle to keep the engine turning in its sweet spot whether you are climbing out at full power or loafing along at cruise. All that angle-changing happens through a piston, a hub full of grease, seals, O-rings and blade bearings, and those are the parts that age whether you fly or not.
Hartzell publishes its recommended overhaul periods in Service Letter HC-SL-61-61, which is revised regularly and covers the whole model line. McCauley does the same through its service bulletin on propeller overhaul periods (SB137). MT-Propeller and Sensenich publish their own. The numbers below are typical, but your model's letter is the one that counts — two propellers that look identical on the ramp can carry different intervals.
| Propeller type | Typical hourly interval | Typical calendar interval |
| Hartzell aluminum, piston singles and twins | 2,000–2,400 hours | 6 years |
| McCauley aluminum, piston singles and twins | 1,500–2,400 hours | 5–6 years (60–72 months) |
| Hartzell composite (ASC-II and similar) | 2,000–2,400 hours | 6 years |
| MT natural composite | 1,800–2,400 hours | 6 years |
| Turboprop propellers (King Air, Caravan, PC-12 class) | 3,000–4,000 hours | 5–6 years |
Keep in Mind: For the average owner flying 60 to 100 hours a year, the calendar gets there first — by a mile. Six years at 80 hours a year is 480 hours on a prop rated for 2,000. You are not overhauling because the propeller is worn out. You are overhauling because the grease has separated, the seals have hardened and moisture has had six years to find its way into the hub.
Is the Interval Mandatory, or Just a Suggestion?
For many privately operated Part 91 aircraft, a manufacturer's published propeller overhaul interval is a recommendation rather than a regulatory deadline. However, an applicable airworthiness directive, an FAA-approved airworthiness limitation, or an approved maintenance or inspection program can make specific requirements mandatory. Owners should verify which requirements apply to their particular aircraft and propeller.
Three things change that calculation. First, if the airplane flies under Part 135 or is on an approved inspection program, the manufacturer's interval becomes mandatory. Second, a handful of Hartzell and McCauley models carry airworthiness directives requiring repetitive blade inspections or hub checks at set intervals, and those are not optional for anyone. Third, your insurer and your next buyer both care. An overdue propeller is one of the first things a pre-buy inspector flags, and it comes straight off the price.
Why It Matters: Propeller failures are rare, but when a blade departs in flight the outcome is usually not survivable. The hub is a highly stressed steel part cycling millions of times, and the inspection that finds a crack is a magnetic particle or fluorescent penetrant check done with the propeller completely disassembled. There is no way to do that on the airplane.
Flying411 keeps aircraft listings, specifications and ownership-cost guides in one place, so you can compare what a well-maintained airframe actually costs to keep flying before you buy it.
The Base Overhaul: What You Get for the Quoted Price
When a propeller shop quotes you a number over the phone, that number is almost always the base labor and standard parts charge — teardown, cleaning, non-destructive inspection of the hub and blades, blade dimensional check and refinishing, new seals, O-rings and standard hardware, reassembly, static balance, repaint and a yellow tag. Nothing more.
As of 2026, base overhaul labor at a certified propeller repair station typically runs:
- Two-blade aluminum, light single: $1,800 to $3,200
- Three-blade aluminum: $2,800 to $4,500
- Three- or four-blade composite: $4,000 to $8,000
- Turboprop, four- or five-blade: $9,000 to $20,000 before parts
The quote assumes everything passes. That is the catch, and it is the same catch that makes engine overhaul quotes differ by thousands. A propeller shop cannot tell you the real number until the blades are stripped and measured.
The Parts That Blow Up the Bill
Aluminum blades get dressed out at every overhaul. Nicks from gravel get filed smooth, leading edges get reshaped, and each time a little material comes off. Blades have published minimum dimensions, and when a blade falls below them it is scrapped. There is no repair and no appeal. A propeller on its third or fourth overhaul is the one most likely to need blades, which is why a 1978 airplane with its original prop is a different financial proposition from one with a recent factory-new assembly.
Typical parts adders in 2026:
- New aluminum blade: $1,500 to $3,500 each, depending on model and availability
- New composite blade: $3,000 to $7,000 each
- Replacement hub: $3,000 to $8,000 for piston props, considerably more for turboprop hubs
- De-ice boots: $500 to $1,200 per blade installed, and they are a wear item on their own cycle
- Spinner, bulkhead and hardware: $300 to $1,500 — cracked spinner bulkheads are common and are not cheap
A two-blade overhaul that was quoted at $2,500 turns into a $7,000 invoice the moment both blades fail dimensional check. That is the single most common surprise owners report, and it is worth asking the shop up front what the blade and hub numbers would be in the worst case.
Heads Up: Blade and hub availability has been the real constraint in recent years more often than price. If your model needs a part that is on backorder, the airplane sits. Ask the shop about lead times before you pull the prop, not after.
The Governor Everyone Forgets
The propeller governor is the small gear-driven pump on the engine that meters oil pressure to the hub. It is a separate component with its own overhaul interval, usually tied to the propeller's — most shops and most engine manufacturers recommend doing the governor whenever the propeller comes off, and certainly at engine overhaul.
Budget $700 to $1,500 to overhaul a standard piston governor, or $1,200 to $2,500 for an outright exchange unit. Turboprop governors and overspeed governors run several times that. If your airplane has a feathering system with an unfeathering accumulator, add a nitrogen service and possibly a diaphragm.
Skipping the governor to save a thousand dollars is a false economy. A tired governor hunts, surges, or fails to hold RPM, and you will chase that squawk around three shops before someone pulls the governor you decided not to touch.
Removal, Shipping, Balancing and Downtime
The propeller shop's invoice is not the whole cost. Your mechanic has to pull the prop and hang it again, and that is roughly three to six hours of labor total at shop rates that now run $110 to $185 an hour in most of the country — call it $400 to $1,000. Add $200 to $500 each way for crating and freight if the shop is not local.
Then there is dynamic balancing. It is not required, but it is the single best $300 to $600 you can spend after a propeller comes back on. A dynamically balanced prop cuts the vibration that cracks exhaust hangers, loosens instrument panel screws and shortens the life of every accessory bolted to the engine.
Downtime matters too. A straightforward overhaul takes two to four weeks at a busy shop; add blades on backorder and it can be two months. Many shops offer an exchange or loaner propeller to keep you flying, usually for a few hundred dollars plus a core deposit.
Pro Tip: Time the propeller overhaul to land on the same shop visit as your annual inspection, or better yet, on the same visit as an engine overhaul. The prop is already coming off for an engine change, so you pay the removal labor once instead of twice. Owners planning a Lycoming engine overhaul should price the propeller into the same budget from the start.
Key Takeaways
For a typical piston single with a two-blade aluminum constant-speed propeller, plan on $3,000 to $6,000 every six years or 2,000 hours, including the governor and the labor to remove and reinstall. If the blades or hub fail inspection, that same job becomes $7,000 to $10,000. A three-blade or composite installation runs $6,000 to $12,000 in good condition and higher with new blades. Turboprop owners should budget $15,000 to $35,000 per propeller and treat it as a scheduled event, not a surprise. Expressed as a reserve, a piston owner flying 100 hours a year should set aside roughly $6 to $12 per flight hour for propeller and governor work — more if the calendar, not the tach, is driving the interval. Compare that to the $25 to $45 per hour most owners reserve for the engine itself and the propeller looks modest, right up until the year it is due.
Full Cost Breakdown
| Line item | Low | High | Type |
| Base overhaul, 2-blade aluminum | $1,800 | $3,200 | Per event (6 yr / 2,000 hr) |
| Base overhaul, 3-blade aluminum | $2,800 | $4,500 | Per event |
| Base overhaul, composite blades | $4,000 | $8,000 | Per event |
| Base overhaul, turboprop 4–5 blade | $9,000 | $20,000 | Per event |
| Replacement aluminum blade (each) | $1,500 | $3,500 | Per event, as needed |
| Replacement composite blade (each) | $3,000 | $7,000 | Per event, as needed |
| Replacement hub, piston prop | $3,000 | $8,000 | Per event, as needed |
| De-ice boots (per blade, installed) | $500 | $1,200 | Per event, as needed |
| Spinner, bulkhead, hardware | $300 | $1,500 | Per event, as needed |
| Governor overhaul or exchange | $700 | $2,500 | Per event |
| Remove and reinstall labor | $400 | $1,000 | Per event |
| Crating and freight, round trip | $400 | $1,000 | Per event |
| Dynamic balance after install | $300 | $600 | Per event, optional |
| Loaner or exchange prop | $300 | $1,500 | Per event, optional |
| Reserve, piston single | $4 | $12 | Per flight hour |
| Reserve, turboprop (per prop) | $8 | $18 | Per flight hour |
Flying411 keeps maintenance-cost guides, engine explainers and aircraft listings in one place, so you can compare the real cost of ownership across models before you commit.
Ways to Spend Less
Every one of these saves real money, and every one of them costs you something else.
Use a regional propeller shop instead of the factory service center. An independent FAA-certified repair station often quotes 20 to 30 percent under a factory shop for the same yellow tag. What you trade away is the factory's parts priority and, sometimes, warranty terms. Ask what warranty comes with the work — a year is common, two years is better.
Fly more hours a year. Counterintuitive, but if the calendar is what forces your overhaul, every hour you add spreads the same fixed cost over more flying. An owner flying 50 hours a year pays about four times as much per hour for the same propeller as one flying 200. This is the same math behind running your engine regularly, and it is one of the strongest arguments for a partnership.
Keep the blades clean and waxed, and stop the erosion early. Blade material that erodes away never comes back. Washing off salt and bugs, waxing the blades, and having small nicks dressed out promptly at annual keeps blades above minimum dimension through more overhaul cycles. The trade is a little hangar time every few weeks.
Avoid gravel and grass takeoffs when you can, or go three-blade. Most blade damage on light airplanes comes from stones thrown up on rough strips. A shorter three-blade prop sits higher off the ground, though it costs more to overhaul. If rough fields are the point of the airplane, the extra blade usually pays for itself in blade life.
Do an IRAN instead of a full overhaul when it is legal for your operation. Inspect-and-repair-as-necessary is cheaper than overhaul and is a legitimate option for Part 91 owners whose propeller is in good shape and past calendar but low on hours. What you give up is a documented full overhaul and a new time-since-overhaul interval. Neither an IRAN nor a standard overhaul resets the propeller's total time since new, and buyers may value a recent full overhaul more highly than an inspection-and-repair entry.
Skip optional cosmetic work. Full strip and repaint to factory finish is lovely; a serviceable refinish is cheaper. The trade is resale appearance, and that matters more than owners expect when photos hit the market.
Good to Know: One thing you cannot save money on is a prop strike. A propeller strike can require major engine inspection even when the visible blade damage appears minor. Lycoming Service Bulletin 533D, revised February 10, 2026, addresses propeller impacts, sudden stoppages, and certain damage events even when the engine is not running. The required inspection depends on the engine manufacturer and the circumstances of the event, so the engine must be evaluated under the applicable current instructions before further flight.That turns a bent blade into a five-figure event, which is why insurance exists and why the first rule of a prop strike is to stop and call your mechanic, not restart and taxi in.
Budget for the Prop Before It Surprises You
Treat the constant-speed propeller overhaul the way you treat the engine reserve: a known, dated, unavoidable expense that you fund a little at a time rather than absorb in one painful month. Look up your propeller's model number on the data plate, find the current revision of the manufacturer's overhaul period letter, write the due date on the first page of your prop logbook, and put $5 to $10 an hour in an account that is not your checking account. When you are shopping, pull the propeller logbook as carefully as the engine logs — a prop two years from calendar is a $5,000 negotiating point hiding in plain sight, and a qualified appraiser will price it in whether or not you do.
When you are ready to compare listings, visitFlying411and see what is on the market today.
Frequently Asked Questions
Does a fixed-pitch propeller need an overhaul too?
Yes, although the overhaul is simpler than for a constant-speed propeller. A one-piece fixed-pitch propeller has no pitch-changing mechanism, but manufacturers may still publish overhaul intervals. For example, McCauley has specified 2,000 hours or 72 months for fixed-pitch propellers. During overhaul, the propeller is inspected for damage, corrosion, and dimensional limits, with repairs made as permitted by the manufacturer. Whether the recommended interval is legally mandatory depends on the aircraft's operation and applicable requirements.
Can I legally fly past the recommended propeller overhaul interval?
Many private Part 91 owners may operate beyond a manufacturer's recommended overhaul interval, provided the propeller remains airworthy and no applicable airworthiness directive, approved airworthiness limitation, or required maintenance program establishes a binding deadline. Part 135 operators must also follow the maintenance requirements applicable to their operation.
How much does the propeller add to total hourly operating cost?
For a typical piston single, roughly $4 to $12 per flight hour once you include the governor, the removal and reinstall labor and a realistic allowance for blade replacement. That is small next to fuel and the engine reserve, but it is not zero, and leaving it out is one of the most common mistakes in a first-time owner's budget.
Is a zero-timed propeller worth more at resale?
Yes, though not dollar for dollar. A freshly overhauled propeller with a fresh six-year clock typically recovers a good share of its cost in a sale, because the buyer's inspector will price an overdue prop as a deduction. It is one of the clearer examples of why published valuation guides miss the mark — see our piece on why blue book values are often wrong.
How do turboprop propellers compare?
Turboprop propellers run longer hourly intervals, typically 3,000 to 4,000 hours, but carry the same five- or six-year calendar limit and cost several times more. Owners of PT6-powered airplanes usually bundle the propeller into the same planning cycle as the engine, which we cover in our comparison of a PT6A hot section versus a full overhaul.
Flying411 keeps turboprop, piston and light-sport ownership guides in one place, so you can compare maintenance reserves across classes before you shop.
