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.
N4521KCessna 172S SkyhawkActive
No flights or transactions in this range; not ranked
2026-10-01 to 2026-10-20
Monthly performance
May–Oct, by calendar month; Oct to the range's end.
Upcoming inspections
Maintenance| Due date | Item | Hours / interval | Status |
|---|---|---|---|
| Dec 16, 2026est | Next 100-hour | 76.7 hours to go 23% of the way | In 57 days |
| Dec 31, 2026 | Next annual | 12 calendar months 81% of the way | In 72 days |
| May 2028est | Overhaul | 790.0 hours to the 2,000-hour TBO 61% of the way | In 569 days |
Aircraft information
- Make / model
- Cessna 172S Skyhawk
- Ownership
- Owned
- Engine TBO
- 2,000 hrs
- Engine hours since overhaul (SMOH)
- 1,210 hrs (entered Aug 31, 2026)
- Current tach
- 6351.2
- Overhaul cost
- $42,000
- Hourly rate
- $185/hr
- Fuel burn
- Not set
What the numbers show
Nothing in this period's numbers crossed a finding threshold.
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 |
|---|
Maintenance
| Maintenance/hr (12-month) | $26/hr |
| Hourly (100-hour inspections, oil, other flying wear) | $23/hr |
| Calendar (annual and other date-driven items) | $238/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 2025-10-21 to 2026-10-20 (934.7 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 Dec 16, 2026 (at tach 6,427.9) 23% of the way est |
| Next annual | Due by Dec 31, 2026 81% of the way |
| Overhaul | About May 2028 61% 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 43.6 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 | −$565est | −$565est | −$742est | −$1,306est | — | $97est |
Operating cost by category
| Fuel | $0 | 0% | |
| Maintenance | $0 | 0% | |
| Insurance | −$274est | 49% | |
| Hangar | −$290est | 51% | |
| Lease payment | $0 | 0% | |
| Instructor pay | $0 | 0% | |
| Other | $0 | 0% | |
| Operating cost | −$565est | 100% | |
| Loan payments (after the operating margin, not in cost) | −$742est |
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 $274 (20/31 days)2026-10 Hangar $290 (20/31 days)
Loan-payment placeholders (no bill booked that month, so the aircraft's monthly field is used): 2026-10 Loan payment $742 (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 | −$565est | −$565est | −$1,306est |
| Range total | 0.0 | 0.0% | $0 | −$565est | −$565est | −$1,306est |
Cost per hour, month by month
| Month | Hours | Fuel | Maintenance |
|---|---|---|---|
| Nov 2025 | 61.1 | $71/hr | $3/hr |
| Dec 2025 | 63.2 | $46/hr | $45/hr |
| Jan 2026 | 56 | $50/hr | $47/hr |
| Feb 2026 | 52.3 | $69/hr | $4/hr |
| Mar 2026 | 92.9 | $68/hr | $31/hr |
| Apr 2026 | 103.3 | $58/hr | $19/hr |
| May 2026 | 111.1 | $71/hr | $21/hr |
| Jun 2026 | 125.6 | $51/hr | $18/hr |
| Jul 2026 | 124.1 | $47/hr | $36/hr |
| Aug 2026 | 115.3 | $54/hr | $24/hr |
| Sep 2026 | 0 | — | — |
| Oct 2026 (part) | 0 | — | — |
Calendar maintenance (annual inspections and other dated items): 2024 (part) $3,086 · 2025 $2,862 · 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 needs hours flown in the range. est
- No bookings in this range.
Transactions, newest first
| Date | Category | Amount | Document | Memo | Source | Match |
|---|