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
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
0 total
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
$0
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.
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
No maintenance recorded in this range.
Downtime counted against utilization in this range: 0.0 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)
0.0
0.0%
$0
−$1,032est
−$1,032est
$0
−$1,032est
—
$306est
Operating cost by category
Fuel
$0
0%
Maintenance
$0
0%
Insurance
−$613est
59%
Hangar
−$419est
41%
Lease payment
$0
0%
Instructor pay
$0
0%
Other
$0
0%
Operating cost
−$1,032est
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.
Fixed-cost placeholders (no bill booked that month, so the aircraft's monthly field is used): 2026-10 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
October 2026 (2026-10-01 to 2026-10-20)
0.0
0.0%
$0
−$1,032est
−$1,032est
−$1,032est
Range total
0.0
0.0%
$0
−$1,032est
−$1,032est
−$1,032est
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.