REGISTRATION PENDING· ICAO24 ac6f4c· last seen Nov 2025

N900BG is a Grob Aircraft G 109B, a single-engine piston aircraft operated by REGISTRATION PENDING. SkyMeter has tracked 124 flights totalling 48 hours of airtime via ADS-B. The most frequent segment is KI68 to KI68. Service window in our records spans 158 days. Of those flights, 16 (12.9%) 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
124
all time
FLOWN HOURS
48
tracked time
📍
AIRPORTS VISITED
29
unique
📡
CALLSIGNS
1
34 routes
📅
SERVICE PERIOD
06/01/2025 → 11/06/2025
first → last
INCIDENT RATE
12.9%
16 flagged

Top routes

By flight count

10
9
3
2
2
2
2
1
1
1
KI68 I19
1

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 N900BG

50
11/06/2025
37m
No alerts
11/06/2025
7m
No alerts
10/18/2025
20m
No alerts
10/17/2025
19m
No alerts
10/17/2025
3m
No alerts
10/11/2025
11m
No alerts
10/11/2025
23m
No alerts
10/01/2025
19m
△ Low approach-stability score
10/01/2025
25m
No alerts
10/01/2025
28m
No alerts
10/01/2025
10m
No alerts
09/30/2025
6m
△ Low approach-stability score
09/29/2025
10m
△ Low approach-stability score
09/20/2025
39m
No alerts
09/20/2025
18m
No alerts
09/18/2025
17m
△ Low approach-stability score
09/18/2025
43m
No alerts
09/18/2025
18m
No alerts
09/18/2025
43m
No alerts
09/13/2025
31m
No alerts
09/09/2025
46m
No alerts
09/08/2025
16m
No alerts
09/08/2025
8m
No alerts
09/07/2025
57m
No alerts
08/30/2025
14m
No alerts
08/29/2025
17m
No alerts
08/28/2025
14m
No alerts
08/27/2025
1h 8m
No alerts
08/22/2025
55m
No alerts
08/13/2025
21m
No alerts
07/30/2025
24m
No alerts
07/30/2025
2m
No alerts
07/30/2025
5m
No alerts
07/30/2025
31m
No alerts
07/26/2025
12m
△ Low approach-stability score
07/26/2025
22m
No alerts
07/23/2025
29m
△ Low approach-stability score
07/15/2025
39m
No alerts
07/11/2025
12m
No alerts
07/10/2025
23m
No alerts
07/10/2025
10m
No alerts
07/10/2025
17m
No alerts
07/09/2025
13m
No alerts
07/09/2025
52m
No alerts
07/08/2025
8m
No alerts
07/08/2025
4m
No alerts
07/06/2025
45m
△ Low approach-stability score
06/27/2025
19m
No alerts
06/22/2025
2m
No alerts
06/22/2025
22m
No alerts
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