Demo Flight AcademyDemo Flight Academy

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.

N8123VPiper PA-28-181 Archer IIIActive

Piper PA-28-181 Archer IIILeaseback

Rank 3 of 4 by operating margin

Jan 1, 2026 – Oct 20, 2026

2026-01-01 to 2026-10-20

to

Maintenance

Maintenance/hr (12-month)$32/hr est
Hourly (100-hour inspections, oil, other flying wear)$21/hr est
Calendar (annual and other date-driven items)$228/month
Unscheduled repairs in this range$2,680
Engine reserve per hour (overhaul cost ÷ TBO)$21/hr
Maintenance booked in this range$15,327

Per-hour and per-month figures cover 2025-10-21 to 2026-10-20 (602.5 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

DateCategoryAmountMemo
2026-01-12Calendar$2,732Annual inspection N8123V
2026-06-25Hourly$2,222100-hour inspection N8123V
2026-05-17Hourly$1,935100-hour inspection N8123V

Unscheduled repairs in this range

DateCategoryAmountMemo
2026-02-18Unscheduled$780Vacuum pump replaced N8123V
2026-01-27Unscheduled$1,900Exhaust riser replaced N8123V

Coming up

Next 100-hourAbout Dec 1, 2026 (at tach 4,166.5)
60% of the way
est
Next annualDue by Jan 31, 2027
73% of the way
OverhaulAbout March 2030
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 28.6 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

  1. Maintenance2026-01-12 08:00
  2. Back in service2026-01-12 17:00
  3. Maintenance2026-04-02 08:00
  4. Back in service2026-04-02 17:00
  5. Maintenance2026-05-17 08:00
  6. Back in service2026-05-17 17:00
  7. Maintenance2026-06-25 08:00
  8. Back in service2026-06-25 17:00
  9. Maintenance2026-08-02 08:00
  10. Back in service2026-08-02 17:00

Downtime counted against utilization in this range: 45.0 h (times in America/Chicago).