· ICAO24 73958c· last seen Aug 2026

4X-HTG is an Aerospool WT9 Dynamic, a single-engine piston aircraft, likely a private operator. SkyMeter has tracked 74 flights totalling 27 hours of airtime via ADS-B. The most frequent segment is LLHZ to LLHZ. Service window in our records spans 454 days. Of those flights, 22 (29.7%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Aerospool WT9 Dynamic has a maximum takeoff weight of 1,320 lb, light wake category.

About the Aerospool WT9 Dynamic

The Aerospool WT9 Dynamic is a Slovak-designed two-seat light sport aircraft that has become popular in the European ultralight and LSA markets since its introduction in the early 2000s. Built by Aerospool in Prievidza, Slovakia, the WT9 features a distinctive low-wing configuration with a composite fuselage and a choice of Rotax piston engines, typically the 100-horsepower Rotax 912ULS. The aircraft is certified under both European ultralight regulations and the U.S.

Light Sport Aircraft category, making it accessible to sport pilots on both continents. Its efficient design delivers cruise speeds around 120 knots while maintaining excellent fuel economy and docile handling characteristics that appeal to both training operations and private owners. The WT9's spacious tandem cockpit, good visibility, and modern avionics options have made it a competitive alternative to more established LSA designs.

SkyMeter has tracked flights across airframes and operators, with distinct routes observed.

✈
FLIGHTS
74
all time
⏱
FLOWN HOURS
27
tracked time
📍
AIRPORTS VISITED
4
unique
📡
CALLSIGNS
1
5 routes
📅
SERVICE PERIOD
5/30/2025 → 8/28/2026
first → last
⚠
INCIDENT RATE
29.7%
22 flagged

Top routes

By flight count

3
3
2
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Aerospool WT9 Dynamic

Engines
Single Piston
Vref (approach)
55 kt
MTOW
1,320 lb
Wake category
L

Recent flights

Newest 37 operations of 4X-HTG

37
1/7/2026
20m
△ Low approach-stability score
1/7/2026
20m
△ Low approach-stability score
1/7/2026
20m
△ Low approach-stability score
12/20/2025
25m
△ Low approach-stability score
12/18/2025
28m
△ Low approach-stability score
12/18/2025
28m
△ Low approach-stability score
11/3/2025
36m
△ Low approach-stability score
10/18/2025
54m
No alerts
10/6/2025
12m
△ Low approach-stability score
9/24/2025
14m
△ Low approach-stability score
8/21/2025
23m
△ Low approach-stability score
6/27/2025
27m
△ Low approach-stability score
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