ALTITUDE 900 LLC, GLENBROOK LLC, HARMAN FREDRIC W TRUSTEE, HARMA· ICAO24 a70328· last seen 28d ago

N551AF is a Pilatus PC-24, a twin-engine jet operated by ALTITUDE 900 LLC, GLENBROOK LLC, HARMAN FREDRIC W TRUSTEE, HARMA. SkyMeter has tracked 1,810 flights totalling 3,010 hours of airtime via ADS-B across 55 callsigns. The most frequent segment is KTEB to KPSM. Service window in our records spans 415 days. Of those flights, 54 (3.0%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Pilatus PC-24 has a 56 ft wingspan, a maximum takeoff weight of 18,300 lb.

About the Pilatus PC-24

The Pilatus PC-24 is the world's first business jet designed from the outset to operate from short, unpaved runways, a capability that sets it apart from every other light jet in its class. Introduced in 2018 by Swiss manufacturer Pilatus Aircraft, the PC-24 combines the cabin comfort and speed of a conventional bizjet with the rugged field performance of a turboprop, earning it the marketing moniker "Super Versatile Jet." Its reinforced landing gear, large cargo door, and flat cabin floor make it equally at home on a 2,930-foot gravel strip in the Australian outback or a paved FBO ramp in Manhattan, a flexibility no Cessna Citation or Embraer Phenom can match. Powered by two Williams FJ44-4A turbofans, the PC-24 cruises at 440 knots and climbs directly to FL450, yet lands at just 81 knots with full flaps, slower than many turboprops.

Its 2,000-nautical-mile range and eight-to-eleven-seat cabin have made it a favorite for air ambulance operators, corporate shuttles, and special-mission work in remote regions where runway infrastructure is minimal. The type's modular interior can be reconfigured in under an hour from executive seating to medevac stretchers to cargo pallets, a versatility that has driven strong adoption among hospital authorities and humanitarian operators. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
1,810
all time
FLOWN HOURS
3,010
tracked time
📍
AIRPORTS VISITED
360
unique
📡
CALLSIGNS
55
814 routes
📅
SERVICE PERIOD
5/27/2025 → 7/16/2026
first → last
INCIDENT RATE
3.0%
54 flagged

Top routes

By flight count

10
4
3
3
3
2
2
2
2
2
2

Aircraft specifications

Pilatus PC-24

Engines
Twin Jet
Vref (approach)
107 kt
Vmo
290 kt
MTOW
18,300 lb
Wingspan
56 ft
Length
55 ft
Wake category
Medium

Recent flights

Newest 50 operations of N551AF

50
7/12/2026
28m
△ Low approach-stability score
7/11/2026
43m
△ Low approach-stability score
7/11/2026
2h 34m
△ Low approach-stability score
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