· ICAO24 840613· last seen 22d ago

JA01NM is a Grob Aircraft G 109B, a single-engine piston aircraft, likely a private operator. SkyMeter has tracked 116 flights totalling 50 hours of airtime via ADS-B. The most frequent segment is JP-0092 to RJAA. Service window in our records spans 395 days. Of those flights, 2 (1.7%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Grob Aircraft G 109B has a maximum takeoff weight of 1,874 lb, light wake category.

About the Grob Aircraft G 109B

The Grob G 109 is a German-built two-seat motor glider that occupies a unique niche between pure sailplanes and conventional light aircraft. Designed by Burkhart Grob in the late 1970s and first flown in 1980, it features a retractable Grob 2500 four-cylinder engine that can be extended for powered flight or retracted flush with the fuselage for soaring. With a 56-foot wingspan and exceptional glide ratio of around 28:1, the G 109 allows pilots to climb under power to find thermals, then shut down and retract the engine for silent soaring flight, combining the efficiency of a sailplane with the flexibility of a powered aircraft.

The type found particular success in Europe for touring and cross-country soaring, where its ability to self-launch and sustain flight in marginal soaring conditions made it far more practical than trailer-launched gliders. Maximum cruise speed is around 115 knots with the engine running, while minimum sink rate in glider configuration is approximately 2 feet per second. The G 109B variant, the most common production model, typically features a 90-horsepower Limbach engine and can operate from grass strips as short as 1,000 feet. Grob produced approximately 250 examples before production ended in the mid-1990s, with many still actively flying in private hands across Europe and North America.

SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
116
all time
FLOWN HOURS
50
tracked time
📍
AIRPORTS VISITED
8
unique
📡
CALLSIGNS
1
8 routes
📅
SERVICE PERIOD
06/29/2025 → 07/30/2026
first → last
INCIDENT RATE
1.7%
2 flagged

Top routes

By flight count

5

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Grob Aircraft G 109B

Engines
Single Piston
Vref (approach)
54 kt
MTOW
1,874 lb
Wake category
L

Recent flights

Newest 50 operations of JA01NM

50
07/30/2026
19m
No alerts
07/30/2026
21m
No alerts
07/04/2026
18m
No alerts
06/06/2026
9m
No alerts
05/24/2026
1h 20m
No alerts
05/24/2026
19m
No alerts
05/24/2026
16m
No alerts
05/24/2026
16m
No alerts
05/24/2026
21m
No alerts
05/24/2026
14m
△ Low approach-stability score
05/24/2026
16m
No alerts
04/26/2026
24m
No alerts
04/26/2026
1h 13m
No alerts
04/26/2026
3m
No alerts
04/26/2026
19m
No alerts
04/26/2026
21m
No alerts
04/25/2026
15m
No alerts
03/29/2026
30m
No alerts
03/29/2026
30m
No alerts
03/15/2026
28m
No alerts
03/15/2026
31m
No alerts
03/15/2026
20m
No alerts
03/15/2026
28m
No alerts
03/15/2026
27m
No alerts
02/14/2026
41m
No alerts
02/14/2026
6m
No alerts
02/14/2026
22m
No alerts
02/14/2026
28m
No alerts
01/16/2026
17m
No alerts
11/30/2025
22m
No alerts
11/30/2025
22m
No alerts
11/30/2025
32m
No alerts
11/23/2025
50m
No alerts
11/08/2025
47m
No alerts
11/08/2025
1h 7m
No alerts
11/02/2025
16m
No alerts
11/02/2025
1h 9m
No alerts
11/02/2025
22m
No alerts
10/05/2025
6m
No alerts
10/05/2025
6m
No alerts
10/05/2025
16m
No alerts
10/05/2025
16m
No alerts
10/05/2025
28m
No alerts
10/05/2025
28m
No alerts
10/05/2025
34m
No alerts
10/05/2025
34m
No alerts
09/15/2025
23m
No alerts
09/15/2025
6m
No alerts
09/15/2025
11m
No alerts
09/15/2025
19m
No alerts
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