· ICAO24 4b366f· last seen 5d ago

HB-UPZ is a Waco Aircraft Company YMF, a single-engine piston aircraft. SkyMeter has tracked 48 flights totalling 41 hours of airtime via ADS-B. The most frequent segment is LSZR to LSZR. Service window in our records spans 408 days. The Waco Aircraft Company YMF has a maximum takeoff weight of 3,000 lb, light wake category.

About the Waco Aircraft Company YMF

The Waco YMF is a modern recreation of the classic 1930s open-cockpit biplane, built by the revived Waco Aircraft Company starting in 1986. While the original Waco biplanes were workhorses of barnstorming and early commercial aviation, today's YMF series are handcrafted luxury sport aircraft that faithfully reproduce the golden-age flying experience with modern materials and safety standards. Each aircraft is built to order in Battle Creek, Michigan, featuring traditional fabric-covered steel tube fuselages, wooden wing spars, and the distinctive radial engine, typically a seven-cylinder Jacobs R-755 producing 275 horsepower.

The YMF's tandem open cockpits, generous wingspan, and docile handling make it a favorite for aerobatic training, scenic tours, and airshow demonstrations, offering pilots the rare opportunity to experience aviation as it was in the barnstorming era. With a cruise speed around 105 knots and a service ceiling near 14,000 feet, the YMF trades speed for character. This is an aircraft built for the joy of flying low and slow, feeling the wind and hearing the radial's unmistakable rumble.

The type remains in limited production, with each airframe representing months of skilled craftsmanship and commanding prices well into six figures. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
48
all time
FLOWN HOURS
41
tracked time
📍
AIRPORTS VISITED
4
unique
📡
CALLSIGNS
1
4 routes
📅
SERVICE PERIOD
06/03/2025 → 07/17/2026
first → last
INCIDENT RATE
0.0%
0 flagged

Top routes

By flight count

3
17
1
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Waco Aircraft Company YMF

Engines
Single Piston
Vref (approach)
55 kt
MTOW
3,000 lb
Wake category
L

Recent flights

Newest 26 operations of HB-UPZ

26
07/17/2026
1h 1m
No alerts
05/28/2026
1h 1m
No alerts
05/21/2026
59m
No alerts
05/03/2026
1h 9m
No alerts
05/03/2026
52m
No alerts
04/08/2026
29m
No alerts
04/08/2026
30m
No alerts
04/08/2026
1h 13m
No alerts
03/22/2026
18m
No alerts
03/22/2026
41m
No alerts
03/22/2026
10m
No alerts
03/22/2026
54m
No alerts
02/26/2026
1h 12m
No alerts
12/11/2025
49m
No alerts
12/11/2025
2m
No alerts
11/04/2025
1h 2m
No alerts
10/02/2025
46m
No alerts
09/04/2025
40m
No alerts
09/03/2025
3m
No alerts
09/03/2025
1h 6m
No alerts
08/27/2025
1h 5m
No alerts
08/19/2025
1h 9m
No alerts
07/11/2025
1h 4m
No alerts
07/02/2025
1h 4m
No alerts
06/24/2025
1h 0m
No alerts
06/03/2025
1h 7m
No alerts
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