· ICAO24 45f051· last seen 2d ago

OY-9444 is a Lindstrand Balloons Zephyr — likely a private operator. SkyMeter has tracked 122 flights totalling 93 hours of airtime via ADS-B. The most frequent segment is EKRK to EKRK. Service window in our records spans 387 days. Of those flights, 12 (9.8%) carry at least one detected incident — go-around, unstable approach, stall warning, or runway excursion. The Lindstrand Balloons Zephyr has light wake category.

About the Lindstrand Balloons Zephyr

The Lindstrand Zephyr is a hot air balloon manufactured by Lindstrand Balloons, a British company founded by Swedish aeronaut Per Lindstrand in the 1970s. Lindstrand became renowned for record-breaking balloon flights, including the first hot air balloon crossing of the Atlantic in 1987 and the Pacific in 1991, both with Richard Branson. The Zephyr represents the company's line of recreational and commercial sport balloons, designed for private pilots and sightseeing operations across Europe and beyond.

Unlike powered aircraft, hot air balloons rely entirely on buoyancy — heated air inside the envelope provides lift, while altitude control comes from burner intensity and vent operation. Pilots navigate by ascending or descending into different wind layers, making each flight a unique exercise in reading atmospheric conditions. The Zephyr typically operates at altitudes between 500 and 3,000 feet AGL during recreational flights, though balloons are capable of reaching 10,000 feet or higher when conditions and regulations permit.

Flight duration depends on fuel capacity and weather, usually ranging from one to three hours. European registrations like those observed (OY- for Denmark, D- for Germany) reflect the balloon's popularity in countries with active sport aviation communities and favorable regulatory frameworks for lighter-than-air operations. SkyMeter has tracked flights across airframes and operators, covering routes.

FLIGHTS
122
all time
FLOWN HOURS
93
tracked time
📍
AIRPORTS VISITED
23
unique
📡
CALLSIGNS
1
27 routes
📅
SERVICE PERIOD
06/12/2025 → 07/05/2026
first → last
INCIDENT RATE
9.8%
12 flagged

Top routes

By flight count

10
12
9
6
3
2
1
1
1
1
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Lindstrand Balloons Zephyr

Engines
0
Wake category
L

Recent flights

Newest 50 operations of OY-9444

50
07/05/2026
1h 0m
No alerts
07/05/2026
1h 0m
No alerts
07/04/2026
30m
No alerts
07/04/2026
2h 33m
No alerts
07/03/2026
1h 41m
No alerts
07/02/2026
38m
No alerts
06/29/2026
2h 37m
No alerts
06/27/2026
1h 4m
△ Unstable approach
06/26/2026
2h 18m
No alerts
06/25/2026
3m
No alerts
06/15/2026
48m
No alerts
06/08/2026
50m
No alerts
06/01/2026
51m
No alerts
05/29/2026
44m
No alerts
05/26/2026
30m
No alerts
05/01/2026
17m
No alerts
05/01/2026
11m
No alerts
04/26/2026
56m
No alerts
04/15/2026
13m
△ Unstable approach
04/15/2026
13m
△ Unstable approach
04/15/2026
16m
△ Unstable approach
04/15/2026
16m
△ Unstable approach
04/08/2026
52m
No alerts
03/18/2026
1h 41m
No alerts
03/06/2026
13m
No alerts
03/06/2026
46m
No alerts
03/06/2026
37m
No alerts
03/06/2026
13m
No alerts
02/15/2026
1h 12m
No alerts
01/20/2026
29m
No alerts
01/11/2026
47m
No alerts
12/24/2025
42m
No alerts
12/24/2025
10m
△ Unstable approach
12/24/2025
17m
No alerts
12/24/2025
17m
No alerts
11/01/2025
44m
No alerts
10/06/2025
24m
No alerts
10/06/2025
34m
No alerts
09/27/2025
1h 0m
No alerts
09/27/2025
50m
No alerts
09/20/2025
13m
No alerts
08/12/2025
16m
No alerts
08/12/2025
32m
No alerts
08/07/2025
26m
No alerts
08/07/2025
44m
No alerts
08/07/2025
14m
No alerts
07/05/2025
2h 34m
No alerts
07/05/2025
24m
No alerts
07/04/2025
1h 35m
No alerts
07/02/2025
34m
No alerts
© SkyMeter · All flight data subject to ODbL attribution