· ICAO24 49c382· last seen 10d ago

OK-BUU56 is a Pipistrel Virus SW 121, a single-engine piston aircraft. SkyMeter has tracked 198 flights totalling 95 hours of airtime via ADS-B. The most frequent segment is LKLB to LKLB. Service window in our records spans 434 days. Of those flights, 4 (2.0%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Pipistrel Virus SW 121 has a maximum takeoff weight of 1,323 lb, light wake category.

About the Pipistrel Virus SW 121

The Pipistrel Virus SW is a Slovenian-designed two-seat ultralight and light sport aircraft that has earned a reputation as one of the most efficient and elegant motorgliders in its class. Built by Pipistrel Aircraft, a pioneer in composite construction and electric aviation, the Virus SW combines a sleek composite airframe with a modest Rotax 912 piston engine to deliver exceptional fuel economy and glide performance. With a maximum takeoff weight of just 1,323 pounds and a stall speed below 40 knots, it qualifies as an ultralight in many jurisdictions while offering cross-country capability that rivals much heavier aircraft.

The SW (short-wing) variant trades some of the original Virus's soaring performance for improved cruise speed and handling, making it popular among European touring pilots and flight schools seeking low operating costs. Its clean aerodynamics yield a cruise speed around 120 knots on less than 5 gallons per hour, and the aircraft's docile handling and excellent visibility make it a favorite for both training and personal travel. The Virus family has won numerous efficiency competitions and set multiple records for fuel economy, cementing Pipistrel's status as a leader in sustainable general aviation.

SkyMeter has tracked flights across airframes and operators, with activity spanning routes.

FLIGHTS
198
all time
FLOWN HOURS
95
tracked time
📍
AIRPORTS VISITED
23
unique
📡
CALLSIGNS
1
45 routes
📅
SERVICE PERIOD
5/30/2025 → 8/7/2026
first → last
INCIDENT RATE
2.0%
4 flagged

Top routes

By flight count

10
14
5
5
3
3
3
3
2
2

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Pipistrel Virus SW 121

Engines
Single Piston
Vref (approach)
50 kt
MTOW
1,323 lb
Wake category
L

Recent flights

Newest 50 operations of OK-BUU56

50
8/7/2026
11m
No alerts
8/7/2026
19m
No alerts
8/5/2026
26m
No alerts
7/31/2026
24m
No alerts
7/31/2026
21m
No alerts
7/30/2026
32m
No alerts
7/29/2026
48m
No alerts
7/2/2026
44m
No alerts
7/2/2026
17m
No alerts
6/18/2026
30m
No alerts
5/31/2026
14m
No alerts
5/24/2026
43m
No alerts
5/24/2026
18m
No alerts
5/24/2026
56m
No alerts
5/24/2026
40m
No alerts
5/24/2026
40m
No alerts
5/21/2026
12m
No alerts
5/1/2026
17m
No alerts
5/1/2026
17m
No alerts
5/1/2026
15m
No alerts
5/1/2026
15m
No alerts
5/1/2026
24m
△ Low approach-stability score
5/1/2026
24m
△ Low approach-stability score
4/30/2026
19m
No alerts
4/28/2026
59m
No alerts
4/28/2026
4m
No alerts
4/28/2026
54m
No alerts
4/26/2026
2m
No alerts
4/26/2026
27m
No alerts
4/26/2026
21m
No alerts
4/12/2026
15m
No alerts
4/12/2026
23m
No alerts
4/9/2026
20m
No alerts
4/9/2026
47m
No alerts
4/9/2026
55m
No alerts
4/2/2026
44m
No alerts
3/10/2026
48m
No alerts
3/10/2026
56m
No alerts
3/8/2026
1h 11m
No alerts
3/8/2026
1h 21m
No alerts
12/25/2025
24m
No alerts
12/21/2025
1h 14m
No alerts
12/20/2025
1h 0m
No alerts
11/23/2025
22m
No alerts
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