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 April 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 April 2027 (100.0 tach hours remaining at about 18.5 a month, through the seasons).
Hours remaining to TBO: 100.0 h
Tach hours per month: 18.5 h/month
Projected overhaul: April 2027
Overhaul cost: $84,000
Hours remaining to TBO: 100.0 h
Tach hours per month: 18.5 h/month
Projected overhaul: April 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 18.5 tach hours a month, month by month as it flew from 2025-10-01 to 2026-09-30, × 0.72 for its recent trend: about April 2027. main factor
Since its rate last changed, its cost per hour has gone from about $255 to $304, about $19,688 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 $254.62 (the 12 months before September 2025) to $303.79 (the 12 months to Sep 30, 2026), up 19%; over the 400.4 hours flown since, that's about $19,688.
Hourly rate: $395.00/hr
Rate last changed: September 2025
Cost per hour before: $254.62/hr
Cost per hour, 12 months to now: $303.79/hr
Hours flown since: 400.4 h
Hourly rate: $395.00/hr
Rate last changed: September 2025
Cost per hour before: $254.62/hr
Cost per hour, 12 months to now: $303.79/hr
Hours flown since: 400.4 h
Facts from your data, not a diagnosis.
Fuel went from $87.90 to $111.82 per hour flown. main factor
Fuel per hour, before: $87.90/hr
Fuel per hour, now: $111.82/hr
Lease payments went from $83.12 to $97.26 per hour flown. smaller factor
Lease payments per hour, before: $83.12/hr
Lease payments per hour, now: $97.26/hr
Insurance went from $25.24 to $31.50 per hour flown. smaller factor
Insurance per hour, before: $25.24/hr
Insurance per hour, now: $31.50/hr
N744PS's next inspection falls in the same two weeks as other aircraft's.
N744PS flew 18% 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 Oct 28, 2026) falls within 14 days of N8123V's 100-hour (about Oct 27, 2026) and N4521K's 100-hour (about Nov 5, 2026) (projected). N744PS flew 18% of the fleet's hours from 2026-07-03 to 2026-09-30.
N744PS 100-hour: about Oct 28, 2026
Also due: N8123V 100-hour: about Oct 27, 2026
Also due: N4521K 100-hour: about Nov 5, 2026
N744PS share of fleet hours: 18%
N744PS 100-hour: about Oct 28, 2026
Also due: N8123V 100-hour: about Oct 27, 2026
Also due: N4521K 100-hour: about Nov 5, 2026
N744PS share of fleet hours: 18%
Facts from your data, not a diagnosis.
N744PS: 100-hour (about Oct 28, 2026); it flies about 18.5 tach hours a month, and flew 18% of the fleet's hours from 2026-07-03 to 2026-09-30. main factor
N744PS hours per month: 18.5 h/month
N744PS share of fleet hours: 18%
Also due within 14 days: N8123V's 100-hour (about Oct 27, 2026) and N4521K's 100-hour (about Nov 5, 2026). smaller factor
Other aircraft due in the same weeks: 2
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
Apr–Sep, by calendar month. 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)
$42/hr
Hourly (100-hour inspections, oil, other flying wear)
$25/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 2025-10-01 to 2026-09-30 (361.9 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 Oct 28, 2026 (at tach 2,917.3)
77% of the way
est
Next annual
Due by Nov 30, 2026
84% of the way
Overhaul
About April 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 18.5 tach hours a month, month by month as it flew from 2025-10-01 to 2026-09-30, × 0.72 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
−$1,600est
−$1,600est
$0
−$1,600est
—
$304est
Operating cost by category
Fuel
$0
0%
Maintenance
$0
0%
Insurance
−$950est
59%
Hangar
−$650est
41%
Lease payment
$0
0%
Instructor pay
$0
0%
Other
$0
0%
Operating cost
−$1,600est
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): 2026-09 Insurance $9502026-09 Hangar $650
By month
Month
Hours flown
Utilization
Based on your weekly schedule.
Revenue
Operating cost
Operating margin
After loan payments
Cash view: includes loan principal
September 2026
0.0
0.0%
$0
−$1,600est
−$1,600est
−$1,600est
Range total
0.0
0.0%
$0
−$1,600est
−$1,600est
−$1,600est
Cost per hour, month by month
Month
Hours
Fuel
Maintenance
Oct 2025
27.5
$82/hr
$0/hr
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
—
—
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.