N57SH · Bombardier Learjet 45 flight activity
195 tracked flights in the 12 months to 31 Jul 2026, on about 10 days a month and an estimated 221 hours in the air.
How N57SH has been flying
N57SH flies about two and a half times as often as the middle Learjet 45, well above the 4 to 10 flights a month flown by the middle half of the fleet.
Tracked by ADS-B, so a minimum.
From time in the air. The logbook has the exact total.
Against 4.4 d for the middle Learjet 45.
Last tracked in July 2026. Published seven days later, by month only.
Month by month
195 flights over 12 active monthsFlights per month · shaded band is the middle half of the fleet (3.8–9.8 a month)
N57SH flew more than the middle half of the fleet in 9 of 12 months. Its busiest month was July 2026, with 36 flights.
Its busiest month was July 2026, with 36 flights, and its quietest December 2025, with 1. The record has 43 tracking gaps, so about one flight in 5 may be missing and every count is a minimum.
Utilization
How steadily it has been used: flights, flying days and estimated hours against the type.
Flown far more than most. Harsher on utilization.
Heavy use means more of its maintenance intervals have been used up. Worth checking where it sits in its inspection cycle before a pre-buy.
Against 6.3 for the middle Learjet 45 (86th). Used harder than most.
Share of flying days from one field.
The data behind it
Against all 480 tracked Learjet 45s, over its record since 1 Jan 2025.How it travels
Its flying is spread across many routes.
46 of 195 flights, both directions.
Spread across many destinations.
0 flights crossed a border.
N57SH’s flying is spread across many routes. Its most-flown pair of airports carries 24% of flights, 46 of 195, counting both directions. Its top three pairs make up 46%, so about five flights in ten go somewhere else. None of its tracked flights crossed a border.
Fatigue, corrosion, engines and brakes
01 Fatigue
Close to the typeHow short were its legs? Airframes age by landings as well as by hours. Many short legs put more pressurization cycles on the structure for the same time in the air.
N57SH is in here
Also graded: short hops. Leg length is shown as context. See this chapter in the sample report →
02 Corrosion
Outside the middle of the fleetWhere does it spend its nights? Where a jet sleeps shapes how fast it corrodes. Salt and damp overnight are what an inspector looks at first.
N57SH is out here, on one side or the other
Also graded: damp air, freeze–thaw, near the coast and moisture in the air. See this chapter in the sample report →
03 Engines and brakes
Close to the typeHow hard were its airfields? Short, hot and high runways ask for more thrust on every takeoff and harder braking on every landing. That wear doesn’t show in the hours.
N57SH is in here
Also graded: hot, high takeoffs; density altitude; dust and dry climate. See this chapter in the sample report →
What the full report adds for N57SH
- 01 All four chapters graded, with the evidence behind every grade
- 02 The operational summary: the whole aircraft in one read
- 03 Its longest stay away from base, and what the record does and doesn’t show about it
- 04 Its home base pattern and operating rhythm: busiest days and months
- 05 PDF, CSV and a share link
$395 for N57SH, one payment
A fraction of the cost of a pre-buy inspection, before you book one.
Other Learjet 45s
Tails flown at a similar rate, with their tracked flights in the 12 months to 31 Jul 2026. Each has its own free page.
About N57SH
How many hours does N57SH fly a year?
About 221 estimated hours in the 12 months to 31 Jul 2026, across 195 tracked flights. Hours are estimated from time in the air, so the logbook has the exact figure.
How often is N57SH flown?
N57SH made 195 tracked flights in the 12 months to 31 Jul 2026, about 16 a month, and flew on about 10 days in each month it flew.
Does N57SH fly internationally?
None of its 195 tracked flights in the 12 months to 31 Jul 2026 crossed a border.
When did N57SH last fly?
It was last tracked in July 2026. We publish an aircraft’s flights seven days after they happen, and show them by month only.
Why don’t you show which airports N57SH uses?
We leave out airports, bases and exact dates on purpose. We show how an aircraft has been used, not where it goes.
What’s in the full TailCheck report for N57SH?
All four graded chapters (Fatigue, Corrosion, Engines and brakes, and Utilization), each against the tracked Learjet 45s, plus the operational summary and operating rhythm, as a PDF, CSV and share link. It costs $395, or $995 a month for unlimited reports and Spotlight.
How this page is made
Everything here comes from N57SH’s ADS-B track, the position signal aircraft broadcast, over the 12 months to 31 Jul 2026. ADS-B misses some flights, so every count is a minimum. Flights appear seven days after they happen, by month only, and hours are estimated from time in the air; the logbook has the real totals. Airports, bases and exact dates are left out on purpose. How grades work: each graded measure is placed among the tracked Learjet 45s against the middle aircraft, the 50th percentile. Between the 25th and 75th it is typical; outside that band it is gentler or harsher. Utilization is graded here for free; for the other chapters this page shows the middle value of the fleet and whether this aircraft sits inside the middle half or outside it. Their grades and values are in the report, not on this page. Owners and operators can ask us not to publish an aircraft’s activity.