Demo school. A sample flight school with four aircraft and two years of invented flights and bills (September 2024–August 2026). Sign in to see your own school's numbers.
With 100.0 tach hours left at the pace it usually flies through the seasons, it's projected for May 2027, at about $84,000 (your setting).
Ideas schools in this spot often explore
Overhaul quotes and shop slots, since lead times can be long.
How the overhaul will be paid for (reserve, financing or cash) and when the money is needed.
Overhaul, exchange or a factory engine: what each costs, and how long the aircraft would be down.
Ideas, not recommendations. Your situation may differ.
Show the numbers
N744PS's engine is projected to reach its 2,000-hour TBO about May 2027 (100.0 tach hours remaining at about 16.4 a month, through the seasons).
Hours remaining to TBO: 100.0 h
Tach hours per month: 16.4 h/month
Projected overhaul: May 2027
Overhaul cost: $84,000
Hours remaining to TBO: 100.0 h
Tach hours per month: 16.4 h/month
Projected overhaul: May 2027
Overhaul cost: $84,000
Facts from your data, not a diagnosis.
N744PS: 100.0 tach hours remaining to TBO (2,000 less 1,900.0 since overhaul), at about 16.4 tach hours a month, month by month as it flew from 2025-10-21 to 2026-10-20, × 0.67 for its recent trend: about May 2027. main factor
It flew about 58% of the time booked, leaving time worth about $82,397 that no one else could book.
Ideas schools in this spot often explore
Whether the booking length for these lessons includes briefing time that could be booked separately, so the aircraft is free sooner.
How long bookings are blocked for: whether the default block fits the lesson, or leaves time nobody uses.
Whether bookings start on time, and what happens to the time when a lesson ends early.
Ideas, not recommendations. Your situation may differ.
Show the numbers
N744PS flew 289.7 of its 498.3 booked hours (58%) in this period; the fleet flew 70% of its booked time. The 208.6 booked hours not flown are worth about $82,397 at its revenue per hour.
N744PS booked hours: 498.3 h
N744PS hours flown: 289.7 h
N744PS share flown: 58%
Fleet share flown: 70%
N744PS booked hours: 498.3 h
N744PS hours flown: 289.7 h
N744PS share flown: 58%
Fleet share flown: 70%
Facts from your data, not a diagnosis.
Bookings averaged 3.0 booked hours for 1.7 hours flown. main factor
Booked hours per booking: 3.0 h
Hours flown per booking: 1.7 h
Cancellations are costing N744PS real flying time.
N744PS$15,800 est Scheduled value of cancelled hours
11% of bookings were cancelled or no-shows, 40.0 scheduled hours worth about $15,800 at the usual rate; one instructor was on most of them.
Ideas schools in this spot often explore
What's different about the bookings of the instructor on most of them: students, times, or workload.
Whether the time of day most cancellations fall in has something in common: early starts, end-of-day slots, or weather.
How the cancellation and no-show policy is set: notice period, fees, and whether it's applied consistently.
Ideas, not recommendations. Your situation may differ.
Show the numbers
N744PS had 20 cancelled or no-show bookings (11% of its 187 bookings) covering 40.0 scheduled hours; its revenue per hour was $395.00.
Cancelled or no-show bookings: 20
Cancellation rate: 11%
Scheduled hours: 40.0 h
Revenue per hour: $395.00/hr
Cancelled or no-show bookings: 20
Cancellation rate: 11%
Scheduled hours: 40.0 h
Revenue per hour: $395.00/hr
Facts from your data, not a diagnosis.
14 of the 20 cancelled or no-show bookings with a start time were in the morning. smaller factor
In the morning: 14
With a start time: 20
One instructor was on 13 of the 13 cancelled or no-show bookings that name an instructor. main factor
With the same instructor: 13
Naming an instructor: 13
19 of the 20 cancelled or no-show bookings that name a customer were booked again by the same customer within 7 days. main factor
Since its rate last changed, its cost per hour has gone from about $255 to $306, about $20,601 over the hours flown since.
Ideas schools in this spot often explore
Whether fuel prices or fuel burn per hour account for the rise.
When the lease terms changed, and whether the rate was reviewed then.
When the hourly rate was last reviewed against its cost per hour.
Ideas, not recommendations. Your situation may differ.
Show the numbers
N744PS's hourly rate last changed in September 2025 (from $375.00 to $395.00 on its invoices). Its operating cost per hour has gone from $254.74 (the 12 months before September 2025) to $306.19 (the 12 months to Oct 20, 2026), up 20%; over the 400.4 hours flown since, that's about $20,601.
Hourly rate: $395.00/hr
Rate last changed: September 2025
Cost per hour before: $254.74/hr
Cost per hour, 12 months to now: $306.19/hr
Hours flown since: 400.4 h
Hourly rate: $395.00/hr
Rate last changed: September 2025
Cost per hour before: $254.74/hr
Cost per hour, 12 months to now: $306.19/hr
Hours flown since: 400.4 h
Facts from your data, not a diagnosis.
Fuel went from $84.85 to $114.86 per hour flown. main factor
Fuel per hour, before: $84.85/hr
Fuel per hour, now: $114.86/hr
Lease payments went from $82.96 to $93.19 per hour flown. smaller factor
Lease payments per hour, before: $82.96/hr
Lease payments per hour, now: $93.19/hr
Insurance went from $25.20 to $32.22 per hour flown. smaller factor
Insurance per hour, before: $25.20/hr
Insurance per hour, now: $32.22/hr
N744PS's next inspection falls in the same two weeks as other aircraft's.
N744PS flew 19% of the fleet's hours, and the others are due within days of it, so they could all be down at once.
Ideas schools in this spot often explore
Bringing one inspection forward a few days so the aircraft aren't down at the same time.
Whether the shop can take two aircraft in the same week, and how long each would take.
Which bookings fall in those weeks and could move to other aircraft.
Ideas, not recommendations. Your situation may differ.
Show the numbers
N744PS's 100-hour (about Nov 30, 2026) and annual (due by Nov 30, 2026) fall within 14 days of N8123V's 100-hour (about Dec 1, 2026) (projected). N744PS flew 19% of the fleet's hours from 2026-07-23 to 2026-10-20.
N744PS 100-hour: about Nov 30, 2026
N744PS Annual: due by Nov 30, 2026
Also due: N8123V 100-hour: about Dec 1, 2026
N744PS share of fleet hours: 19%
N744PS 100-hour: about Nov 30, 2026
N744PS Annual: due by Nov 30, 2026
Also due: N8123V 100-hour: about Dec 1, 2026
N744PS share of fleet hours: 19%
Facts from your data, not a diagnosis.
N744PS: 100-hour (about Nov 30, 2026) and annual (due by Nov 30, 2026); it flies about 16.4 tach hours a month, and flew 19% of the fleet's hours from 2026-07-23 to 2026-10-20. main factor
N744PS hours per month: 16.4 h/month
N744PS share of fleet hours: 19%
Also due within 14 days: N8123V's 100-hour (about Dec 1, 2026). smaller factor
Other aircraft due in the same weeks: 1
est Includes estimated values: inferred bills, placeholder fixed costs or allocated fuel. Figures for cancellations, downtime and unbilled ground sessions are estimates by design.
Informational only, based on your data. Not financial, legal, or aviation-maintenance advice.
Utilization by month
May–Oct, by calendar month; Oct to the range's end. Based on your weekly schedule.
Flights, newest first
Date
Kind
Hobbs start
Hobbs end
Tach start
Tach end
Source
2026-08-31
dual
3364.9
3366.2
2892.9
2894.0
gsheets
2026-08-30
dual
3362.9
3364.9
2891.2
2892.9
gsheets
2026-08-29
dual
3361.0
3362.9
2889.6
2891.2
gsheets
2026-08-27
dual
3359.1
3361.0
2888.0
2889.6
gsheets
2026-08-26
dual
3357.4
3359.1
2886.5
2888.0
gsheets
2026-08-24
dual
3355.5
3357.4
2884.9
2886.5
gsheets
2026-08-23
no show
—
—
—
—
gsheets
2026-08-22
dual
3353.5
3355.5
2883.2
2884.9
gsheets
2026-08-21
dual
3352.0
3353.5
2881.9
2883.2
gsheets
2026-08-20
dual
3350.6
3352.0
2880.7
2881.9
gsheets
2026-08-19
dual
3348.8
3350.6
2879.2
2880.7
gsheets
2026-08-18
dual
3347.1
3348.8
2877.7
2879.2
gsheets
2026-08-17
dual
3345.8
3347.1
2876.6
2877.7
gsheets
2026-08-16
dual
3343.8
3345.8
2874.9
2876.6
gsheets
2026-08-15
dual
3342.4
3343.8
2873.7
2874.9
gsheets
2026-08-13
dual
3340.8
3342.4
2872.3
2873.7
gsheets
2026-08-12
dual
3338.9
3340.8
2870.7
2872.3
gsheets
2026-08-11
dual
3337.5
3338.9
2869.5
2870.7
gsheets
2026-08-10
cancelled
—
—
—
—
gsheets
2026-08-09
dual
3335.4
3337.5
2867.7
2869.5
gsheets
2026-08-08
dual
3333.7
3335.4
2866.2
2867.7
gsheets
2026-08-07
dual
3332.0
3333.7
2864.7
2866.2
gsheets
2026-08-06
cancelled
—
—
—
—
gsheets
2026-08-05
dual
3330.3
3332.0
2863.2
2864.7
gsheets
2026-08-04
dual
3328.7
3330.3
2861.8
2863.2
gsheets
Maintenance
Maintenance/hr (12-month)
$44/hr
Hourly (100-hour inspections, oil, other flying wear)
$26/hr
Calendar (annual and other date-driven items)
$511/month
Unscheduled repairs in this range
$0
Engine reserve per hour (overhaul cost ÷ TBO)
$42/hr
Maintenance booked in this range
$6,725
Per-hour and per-month figures cover 2025-10-21 to 2026-10-20 (343.4 Hobbs hours), so one month's annual or a month with few hours doesn't swing them. The operating break-even uses them too. Operating cost and margin stay as booked.
Largest in this range
Date
Category
Amount
Memo
2026-06-30
Hourly
$2,395
100-hour inspection N744PS
2026-04-17
Hourly
$1,949
100-hour inspection N744PS
2026-04-14
Hourly
$1,340
Alternator overhaul - Seminole
Coming up
Next 100-hour
About Nov 30, 2026 (at tach 2,917.3)
77% of the way
est
Next annual
Due by Nov 30, 2026
89% of the way
Overhaul
About May 2027
95% of the way
est
Reserve per hour
$42.00 needed
Dates marked est are estimates: the 100-hour from this aircraft's upcoming bookings and its last 90 days of hours (hover it for how), the overhaul projected at about 16.4 tach hours a month, month by month as it flew from 2025-10-21 to 2026-10-20, × 0.67 for its recent trend.
Maintenance downtime
Maintenance2026-04-17 08:00
Back in service2026-04-17 17:00
Maintenance2026-06-30 08:00
Back in service2026-06-30 17:00
Downtime counted against utilization in this range: 18.0 h (times in America/Chicago).
Summary
Hours flown
Utilization
Based on your weekly schedule.
Revenue
Operating cost
Operating margin
Loan payments
After loan payments
Cash view: includes loan principal
Cost/hr
Cost/hr (12-month)
289.7
9.9%
$114,432
−$80,939est
$33,493est
$0
$33,493est
$279est
$306est
Operating cost by category
Fuel
−$33,181est
41%
Maintenance
−$6,725est
8%
Insurance
−$9,163est
11%
Hangar
−$6,269est
8%
Lease payment
−$25,600
32%
Instructor pay
$0
0%
Other
$0
0%
Operating cost
−$80,939est
100%
Loan payments (after the operating margin, not in cost)
$0
est Includes estimated values: inferred bills, placeholder fixed costs or allocated fuel.
Bars are drawn against the largest category; striped bars include estimates. The percent is each category's share of the operating cost.
Fuel includes $5,653 allocated to this aircraft from fuel with no tail number, split by Hobbs hours each month (an estimate).
Fixed-cost placeholders (no bill booked that month, so the aircraft's monthly field is used): 2026-09 Insurance $9502026-09 Hangar $6502026-10 Insurance $613 (20/31 days)2026-10 Hangar $419 (20/31 days)
By month
Month
Hours flown
Utilization
Based on your weekly schedule.
Revenue
Operating cost
Operating margin
After loan payments
Cash view: includes loan principal
January 2026
23.7
7.6%
$9,362
−$8,125est
$1,237est
$1,237est
February 2026
20.0
7.1%
$7,900
−$7,262est
$638est
$638est
March 2026
31.2
10.1%
$12,324
−$6,960est
$5,364est
$5,364est
April 2026
39.3
13.5%
$15,524
−$13,056est
$2,467est
$2,467est
May 2026
40.3
13.0%
$15,919
−$9,389est
$6,529est
$6,529est
June 2026
45.6
15.7%
$18,012
−$12,802est
$5,210est
$5,210est
July 2026
47.0
15.2%
$18,565
−$10,350est
$8,215est
$8,215est
August 2026
42.6
13.7%
$16,827
−$10,362est
$6,465est
$6,465est
September 2026
0.0
0.0%
$0
−$1,600est
−$1,600est
−$1,600est
October 2026 (2026-10-01 to 2026-10-20)
0.0
0.0%
$0
−$1,032est
−$1,032est
−$1,032est
Range total
289.7
9.9%
$114,432
−$80,939est
$33,493est
$33,493est
Cost per hour, month by month
Month
Hours
Fuel
Maintenance
Nov 2025
22.3
$82/hr
$374/hr
Dec 2025
22.4
$143/hr
$0/hr
Jan 2026
23.7
$131/hr
$9/hr
Feb 2026
20
$123/hr
$0/hr
Mar 2026
31.2
$69/hr
$0/hr
Apr 2026
39.3
$122/hr
$89/hr
May 2026
40.3
$109/hr
$5/hr
Jun 2026
45.6
$118/hr
$57/hr
Jul 2026
47
$118/hr
$0/hr
Aug 2026
42.6
$126/hr
$5/hr
Sep 2026
0
—
—
Oct 2026 (part)
0
—
—
Calendar maintenance (annual inspections and other dated items): 2024 (part) $6,085 · 2025 $6,136 · 2026 (part) $0
Maintenance per hour is lumpy month to month (an annual lands in one month); the 12-month rate above smooths it.
Break-even and cancellations
Break-even: 18.8 hours a month to cover $4,774 of fixed costs; it flew 30.1 a month. est
Cancelled or no-show: 11% of 187 bookings (14 cancelled, 6 no-shows).