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.
After its operating costs and the owner's payout under the agreement, the school was about $790 behind on N8123V in this period.
Ideas schools in this spot often explore
How the costs the school carries on the leaseback (insurance, hangar, maintenance) are split with the owner in the agreement.
Whether the leaseback agreement's payout terms still fit what the aircraft earns and costs to run.
Which months' owner payouts differ from the agreement, and whether a payment was missed, doubled, or paid on old terms.
Ideas, not recommendations. Your situation may differ.
Show the numbers
At $22 per Hobbs hour, N8123V's owner was owed $0 for 0.0 hours; the books show $0 paid. After that payout and its operating cost of $790, the school's net on N8123V was -$790.
Where fuel is purchased and at what price: contract pricing, self-serve against full-serve, and fuel-card fees.
Leaning and run-up procedures in the syllabus, and whether they're followed consistently.
Whether the hourly rate or a fuel surcharge moves with fuel prices.
Ideas, not recommendations. Your situation may differ.
Show the numbers
N8123V's fuel cost per Hobbs hour was $74.41 in Jul–Sep 2026, up 18% from $63.31 in Apr–Jun 2026, against a fleet-wide rise of 0%, with under 3 months of flying in a window, so it isn't priced.
Fuel per hour, Jul–Sep 2026: $74.41/hr
Fuel per hour, Apr–Jun 2026: $63.31/hr
Rise: 18%
Fleet-wide change: 0%
Hours flown this period: 0.0 h
Fuel per hour, Jul–Sep 2026: $74.41/hr
Fuel per hour, Apr–Jun 2026: $63.31/hr
Rise: 18%
Fleet-wide change: 0%
Hours flown this period: 0.0 h
N8123V's next inspection falls in the same two weeks as other aircraft's.
N8123V flew 33% 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
N8123V's 100-hour (about Oct 27, 2026) falls within 14 days of N744PS's 100-hour (about Oct 28, 2026) and N4521K's 100-hour (about Nov 5, 2026) (projected). N8123V flew 33% of the fleet's hours from 2026-07-03 to 2026-09-30.
N8123V 100-hour: about Oct 27, 2026
Also due: N744PS 100-hour: about Oct 28, 2026
Also due: N4521K 100-hour: about Nov 5, 2026
N8123V share of fleet hours: 33%
N8123V 100-hour: about Oct 27, 2026
Also due: N744PS 100-hour: about Oct 28, 2026
Also due: N4521K 100-hour: about Nov 5, 2026
N8123V share of fleet hours: 33%
Facts from your data, not a diagnosis.
N8123V: 100-hour (about Oct 27, 2026); it flies about 35.7 tach hours a month, and flew 33% of the fleet's hours from 2026-07-03 to 2026-09-30. main factor
N8123V hours per month: 35.7 h/month
N8123V share of fleet hours: 33%
Also due within 14 days: N744PS's 100-hour (about Oct 28, 2026) and N4521K's 100-hour (about Nov 5, 2026). smaller factor
Other aircraft due in the same weeks: 2
Not in your data: gallons on fuel bills. The cards leave out what depends on them.
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)
$32/hr est
Hourly (100-hour inspections, oil, other flying wear)
$20/hr est
Calendar (annual and other date-driven items)
$228/month
Unscheduled repairs in this range
$0
Engine reserve per hour (overhaul cost ÷ TBO)
$21/hr
Maintenance booked in this range
$0
Per-hour and per-month figures cover 2025-10-01 to 2026-09-30 (641.7 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 27, 2026 (at tach 4,166.5)
60% of the way
est
Next annual
Due by Jan 31, 2027
68% of the way
Overhaul
About May 2029
44% of the way
est
Reserve per hour
$21.00 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 35.7 tach hours a month, month by month as it flew from 2025-10-01 to 2026-09-30, × 0.79 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
−$790est
−$790est
$0
−$790est
—
$138est
Operating cost by category
Fuel
$0
0%
Maintenance
$0
0%
Insurance
−$390est
49%
Hangar
−$400est
51%
Lease payment
$0
0%
Instructor pay
$0
0%
Other
$0
0%
Operating cost
−$790est
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 $3902026-09 Hangar $400
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
−$790est
−$790est
−$790est
Range total
0.0
0.0%
$0
−$790est
−$790est
−$790est
Cost per hour, month by month
Month
Hours
Fuel
Maintenance
Oct 2025
63.3
$66/hr
$23/hr
Nov 2025
37.7
$64/hr
$88/hr
Dec 2025
36.1
$67/hr
$19/hr
Jan 2026
24.3
$73/hr
$191/hr
Feb 2026
34.9
$44/hr
$22/hr
Mar 2026
67.8
$73/hr
$3/hr
Apr 2026
60.4
$58/hr
$35/hr
May 2026
77.4
$48/hr
$33/hr
Jun 2026
74.9
$83/hr
$35/hr
Jul 2026
91.3
$80/hr
$3/hr
Aug 2026
73.6
$67/hr
$29/hr
Sep 2026
0
—
—
Calendar maintenance (annual inspections and other dated items): 2024 (part) $0 · 2025 $3,073 · 2026 (part) $2,732
Maintenance per hour is lumpy month to month (an annual lands in one month); the 12-month rate above smooths it.