RISER JOHN T· ICAO24 abba92· last seen 6d ago

N855GS is a Glasair Aviation Glasair, a single-engine piston aircraft operated by RISER JOHN T. SkyMeter has tracked 116 flights totalling 29 hours of airtime via ADS-B across 2 callsigns. The most frequent segment is K5S9 to K4S9. Service window in our records spans 406 days. Of those flights, 4 (3.4%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Glasair Aviation Glasair has a maximum takeoff weight of 2,100 lb, light wake category.

About the Glasair Aviation Glasair

The Glasair is a family of high-performance composite kit aircraft designed by Tom Hamilton in the early 1980s and produced by Glasair Aviation (formerly Stoddard-Hamilton Aircraft). Built primarily from fiberglass and foam sandwich construction, the Glasair pioneered the use of pre-molded composite components in the homebuilt market, dramatically reducing construction time compared to traditional tube-and-fabric designs. The original Glasair I was a single-seat speedster, but the line evolved through the two-seat Glasair II and culminated in the Glasair III, a sleek four-seat cross-country machine capable of cruise speeds exceeding 200 knots with a 300-horsepower Lycoming engine.

The Glasair III in particular earned a reputation as one of the fastest fixed-gear piston singles available to homebuilders, rivaling certified aircraft costing several times more. The design's clean aerodynamics, retractable gear option (Glasair RG variants), and efficient laminar-flow wing made it a favorite among builders seeking both speed and cross-country capability. While construction requires moderate skill and typically 1,500 to 2,000 hours of build time, the Glasair's performance envelope and relatively forgiving handling characteristics have made it a staple of the experimental aircraft community for over four decades.

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

FLIGHTS
116
all time
FLOWN HOURS
29
tracked time
📍
AIRPORTS VISITED
28
unique
📡
CALLSIGNS
2
40 routes
📅
SERVICE PERIOD
06/07/2025 → 07/18/2026
first → last
INCIDENT RATE
3.4%
4 flagged

Top routes

By flight count

10
3
2
2
2
03S KS48
1
1
03S K4S9
1
1
1

Flight numbers

Most-flown by this airframe

2

Aircraft specifications

Glasair Aviation Glasair

Engines
Single Piston
Vref (approach)
70 kt
MTOW
2,100 lb
Wake category
L

Recent flights

Newest 50 operations of N855GS

50
07/18/2026
25m
No alerts
07/18/2026
11m
No alerts
07/14/2026
3m
No alerts
07/02/2026
2m
No alerts
07/02/2026
6m
No alerts
06/20/2026
29m
No alerts
06/20/2026
20m
No alerts
05/31/2026
14m
No alerts
05/28/2026
8m
No alerts
05/21/2026
13m
No alerts
05/21/2026
20m
No alerts
05/09/2026
21m
No alerts
05/07/2026
26m
No alerts
04/05/2026
15m
No alerts
04/05/2026
22m
No alerts
01/24/2026
27m
No alerts
01/24/2026
17m
No alerts
01/18/2026
5m
No alerts
01/18/2026
23m
No alerts
01/17/2026
13m
No alerts
01/17/2026
11m
No alerts
01/13/2026
15m
No alerts
01/13/2026
7m
No alerts
01/13/2026
13m
No alerts
01/11/2026
7m
No alerts
01/09/2026
26m
No alerts
01/09/2026
10m
No alerts
01/03/2026
6m
No alerts
12/29/2025
28m
No alerts
12/29/2025
25m
△ Low approach-stability score
12/19/2025
6m
No alerts
11/30/2025
6m
No alerts
11/29/2025
34m
No alerts
11/08/2025
27m
No alerts
11/08/2025
10m
No alerts
10/30/2025
2m
No alerts
10/18/2025
26m
No alerts
09/26/2025
5m
△ Low approach-stability score
09/26/2025
25m
No alerts
09/05/2025
5m
No alerts
08/28/2025
32m
No alerts
08/28/2025
2m
No alerts
08/28/2025
10m
No alerts
08/26/2025
36m
No alerts
08/21/2025
8m
No alerts
08/21/2025
18m
No alerts
08/05/2025
3m
No alerts
08/05/2025
3m
No alerts
08/05/2025
7m
No alerts
07/25/2025
2m
No alerts
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