Pipistrel Virus Sw 121 (KP2)
ICAO KP2 Light Piston

Pipistrel Virus Sw 121

Single Piston

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 25 flights across 7 airframes and 1 operators, with activity spanning routes.

ACTIVE AIRFRAMES
7
last 7 days
🏢
OPERATORS
1
unique airlines
📊
FLIGHTS
25
tracked
AVG DURATION
48m
per flight
INCIDENT RATE
4.0%
1 flagged

Safety in context

The incident rate counts flights with ANY safety event detected by SkyMeter: go-arounds (a routine response, not a failure), unstable-approach gate flags (advisory thresholds), rejected takeoffs (the system working as designed), and runway events. It is NOT an accident rate or fatality rate. For accident statistics, refer to the NTSB Aviation Accident Database (USA) or the Aviation Safety Network. See methodology for what each event type measures.

Performance

Speed envelope & approach

Vref
50 kt
Vref range
Vmo
Mmo
Vne
151 kt
Vno
135 kt
Vs1 (clean)
42 kt
Vs0 (landing)
37 kt
Vfe
81 kt
Approach category

Dimensions

Airframe geometry

Wingspan
Length
Tail height
Wheelbase
Gear width
Wake category
L

Weight & identification

Operating limits

MTOW
1,323 lb
MALW
Manufacturer model
Virus SW 121
FAA designator
Registered

Top operators

By fleet size · last 7 days

0

No operator data available.

Safety profile

Flagged flights · last 7 days

Family

Related variants

0

No related variants.

Recent incidents

Flagged flights of KP2

11
8/12/2026
1h 45m
△ Low approach-stability score
6/7/2026
23m
△ Low approach-stability score
5/1/2026
24m
△ Low approach-stability score
5/1/2026
24m
△ Low approach-stability score
4/18/2026
45m
△ Low approach-stability score
4/18/2026
1h 35m
△ Low approach-stability score
11/6/2025
49m
△ Low approach-stability score
10/19/2025
42m
△ Low approach-stability score
9/13/2025
25m
△ Low approach-stability score
8/25/2025
56m
△ Low approach-stability score

Recent flights

Real flights of KP2 · airborne ≥ 20 min

30
8/16/2026
1h 12m
No alerts
8/15/2026
1h 49m
No alerts
8/15/2026
1h 15m
No alerts
8/14/2026
51m
No alerts
8/14/2026
1h 53m
No alerts
8/13/2026
28m
No alerts
8/12/2026
1h 45m
△ Low approach-stability score
8/12/2026
1h 0m
No alerts
8/12/2026
24m
No alerts
8/12/2026
58m
No alerts
8/12/2026
21m
No alerts
8/12/2026
39m
No alerts
8/12/2026
1h 46m
No alerts
8/11/2026
2h 33m
No alerts
8/11/2026
23m
No alerts
8/10/2026
21m
No alerts
8/9/2026
1h 37m
No alerts
8/8/2026
1h 16m
No alerts
8/8/2026
41m
No alerts
8/7/2026
1h 2m
No alerts
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© SkyMeter · All flight data subject to ODbL attribution · Tracking window: 7 days (free tier)