What Does Your Drone Really Cost Per Flight Hour?

Contributed by Bashar Qawas

Half an hour in the air. Easy job, right? Perhaps, until you count the driving, setup, and staff time that goes into that short flight. The aircraft's purchase price won't tell you whether the job makes sense. Your books should.

A recent Commercial UAV News webinar argued for buying finished drone data instead of buying drones. One panelist's list of in-house obstacles was familiar: choosing a platform and sensors, hiring and training pilots, keeping up with FAA rules, insurance, maintenance and data management. Plenty to carry. Still, one panelist acknowledged that a large mine flying stockpiles every day could justify its own program.

There's no contradiction there. The question is which situation best fits your operation. Many drone programs can tell you what their equipment costs, but what an hour in the air costs is another matter. Without that figure, comparing your operation with a data provider's quote is, well, a guess.

Start With the Equipment, Piece by Piece

Give each aircraft its own entry in an asset list - and each sensor gets a separate entry, too. Each battery set gets another. Record the purchase date, purchase price, expected resale value at retirement, and expected flight hours for each.

One tidy “drone equipment” account might look convenient, but it hides the distinctions you need. A sensor moving between two airframes has its own working life. Battery sets wear out faster than the aircraft they power. Same kit, different clocks.

For batteries, use the cycle rating from the manufacturer's documentation, then convert those cycles into flight hours using your own typical flight length. Don't skip that conversion; you need hours to combine these costs.

Subtract expected resale value from purchase price and divide the remainder by expected lifetime flight hours. That's your equipment costing figure for pricing decisions. It's separate from whatever your accountant uses for tax purposes.

Give the Rest of the Costs Somewhere to Go

Insurance, flight planning and processing software subscriptions, and repairs belong in the yearly cost record. So do the small items you can easily wave away.

Under Part 107, FAA registration costs $5 per drone and lasts three years. Remote pilots must complete online recurrent training every 24 calendar months. The FAA course costs nothing, but the pilot hours spent taking it still count as paid time.

Then give every job its own tag, class, or project in your books. Put that job name on every flight log entry, mileage claim and timesheet line. Otherwise, you'll have expenses without a reliable way to tell which work produced them.

Pilot time deserves particular attention. A half-hour flight can occupy a full day once driving, site setup, safety briefings, and processing enter the picture. All those hours belong to the job.

Put Some Numbers Against Actual Work

This worked example is hypothetical, with the numbers rounded to keep the arithmetic easy to follow. Use your own figures when doing the comparison.

The operator's mapping aircraft cost $14,000. It has an expected life of 600 flight hours, with a $2,000 resale value at retirement. That gives an equipment cost of $20.00 per flight hour.

The mapping sensor cost $24,000, has no expected resale value, and should last 800 hours: $30.00 per hour. Each battery set costs $1,000 and should last 100 flight hours: another $10.00 per hour. Together, the equipment costs $60.00 per flight hour. Base each hourly figure on whichever comes first between the rated hours or the years you will actually keep the gear, because drones are often retired for age before they wear out.

Annual insurance is $4,800, software subscriptions are $3,600, and repairs are $2,400. Total: $10,800. With 200 hours flown per year, those yearly costs add $54.00 per flight hour. Add the equipment cost, and the true cost per flight hour is $114.00.

Staff time sits separately at $45 an hour, covering pay and payroll costs. Keep it separate here so a short flight with a long workday doesn't disappear into an average.

Now compare three jobs with quotes for buying the same data.

Stockpile volumes. The job takes 1.5 flight hours and 5 staff hours. Flying costs $171.00; staff time costs $225.00. That's $396.00 in total, against a provider quote of $700. Flying it yourself saves $304.00.

Roof inspection. Just 0.5 flight hours, but 9 staff hours, mostly travel. Flying costs $57.00 and staff time costs $405.00, bringing the job to $462.00. The provider quotes $400. Buying the data saves $62.00.

Topographic survey. At 4 flight hours and 14 staff hours, flying costs $456.00 and staff time costs $630.00. Total cost is $1,086.00. Against the provider's $1,800 quote, flying it yourself saves $714.00.

That roof inspection is the catch. It looks like the easiest assignment—only half an hour airborne—but it's the one that loses money in-house. The drive and setup swallow the advantage.

Fewer Hours Change the Answer

Work slows, but the yearly costs don't shrink along with it.

If this operator flies 100 hours instead of 200, insurance, software, and repairs cost $108.00 per flight hour. The true cost per flight hour climbs from $114.00 to $168.00. That's an increase of $54.00, or 47 percent. To keep the example simple, repairs stay at their yearly figure, and the equipment rate stays at $60.00. In practice, repairs would fall somewhat with fewer hours, while equipment flown less may be retired for age before it reaches its rated hours, which raises its true hourly cost.

The stockpile job now costs $477.00 in-house against the $700 quote. The survey costs $1,302.00 against $1,800. Both still favor flying, though the margins narrow. The roof inspection comes in at $489.00 against a $400 quote.

Here is the webinar's large mine point in arithmetic, using our hypothetical operator. Frequent flying spreads fixed costs over more hours and makes ownership pay. Occasional flying leaves the same insurance and subscriptions resting on fewer hours. Buying data starts looking better, job by job.

Revisit the Comparison Every Quarter

With the asset list, yearly costs, and job tags in place, this takes very little time. Each quarter, total flight hours, recalculate cost per flight hour, and put each job's cost beside the price of buying its data.

Look for three patterns. Jobs that repeatedly lose to a provider's quote, usually short flights far from base, are candidates to subcontract. Jobs that win comfortably are work to pursue. And when cost per flight hour keeps rising because flight hours keep falling, take a hard look at whether the next aircraft or sensor is worth buying at all.

Owning and buying each put a price on the same deliverable. Your records can show which price is lower for each kind of job.

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