· ICAO24 49c295· last seen 1d ago

OK-ZUN01 is a Direct Fly Alto, a single-engine piston aircraft. SkyMeter has tracked 444 flights totalling 244 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is LKHB to LKHB. Service window in our records spans 445 days. Of those flights, 24 (5.4%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Direct Fly Alto has a maximum takeoff weight of 1,320 lb.

About the Direct Fly Alto

The Alto 912 TG is a Czech-built light sport aircraft designed and manufactured by Alto Aviation in the early 2000s. Certified under both European CS-LSA and U.S. FAA LSA regulations, the Alto occupies the ultralight / light sport niche with a maximum takeoff weight of exactly 1,320 pounds, the upper limit for the LSA category in the United States.

Powered by a single Rotax 912 series engine (typically the 100-hp 912 ULS), the Alto features a high-wing configuration, tricycle landing gear, and side-by-side seating for two. Its docile handling characteristics and relatively low operating costs have made it popular among flight schools and private owners in Central Europe and North America. The type's stall speed of 37 knots in landing configuration and never-exceed speed of 120 knots place it squarely in the trainer and recreational touring mission profile.

While not breaking any records, the Alto represents a straightforward, affordable entry point into certificated light sport flying, competing with designs like the Czech Sport Aircraft SportCruiser and Flight Design CT series. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

✈
FLIGHTS
444
all time
⏱
FLOWN HOURS
244
tracked time
📍
AIRPORTS VISITED
26
unique
📡
CALLSIGNS
2
32 routes
📅
SERVICE PERIOD
8/8/2025 → 10/28/2026
first → last
⚠
INCIDENT RATE
5.4%
24 flagged

Top routes

By flight count

10
101
17
13
6
5
2
1
1

Flight numbers

Most-flown by this airframe

2

Aircraft specifications

Direct Fly Alto

Engines
Single Piston
Vref (approach)
50 kt
MTOW
1,320 lb
Wake category
Light

Recent flights

Newest 50 operations of OK-ZUN01

50
10/28/2026
7m
No alerts
10/28/2026
10m
No alerts
10/28/2026
3m
No alerts
10/27/2026
11m
No alerts
10/27/2026
25m
No alerts
10/24/2026
50m
No alerts
10/14/2026
53m
No alerts
10/13/2026
16m
No alerts
10/13/2026
25m
No alerts
10/13/2026
8m
No alerts
10/11/2026
26m
No alerts
10/11/2026
33m
No alerts
10/11/2026
5m
No alerts
10/11/2026
5m
No alerts
10/11/2026
40m
No alerts
10/9/2026
4m
No alerts
10/9/2026
8m
No alerts
10/9/2026
36m
No alerts
10/7/2026
36m
No alerts
10/7/2026
28m
No alerts
10/7/2026
37m
△ Low approach-stability score
10/6/2026
42m
No alerts
10/6/2026
45m
No alerts
10/6/2026
31m
No alerts
10/5/2026
20m
△ Low approach-stability score
10/5/2026
34m
No alerts
10/5/2026
53m
No alerts
10/4/2026
30m
No alerts
10/4/2026
32m
△ Low approach-stability score
10/4/2026
3m
No alerts
10/4/2026
29m
No alerts
10/3/2026
24m
No alerts
10/3/2026
44m
No alerts
10/3/2026
22m
No alerts
10/3/2026
26m
No alerts
10/3/2026
15m
No alerts
9/26/2026
27m
No alerts
9/19/2026
30m
No alerts
9/19/2026
43m
No alerts
9/19/2026
50m
No alerts
9/18/2026
52m
No alerts
9/16/2026
46m
No alerts
9/15/2026
22m
△ Low approach-stability score
9/15/2026
21m
△ Low approach-stability score
9/15/2026
33m
No alerts
© SkyMeter · All flight data subject to ODbL attribution