HUBBART STEPHEN B· ICAO24 a36cee· last seen 11d ago

N32KX is a Van's Aircraft RV-4, a single-engine piston aircraft operated by HUBBART STEPHEN B. SkyMeter has tracked 98 flights totalling 85 hours of airtime via ADS-B. The most frequent segment is KS70 to KPSC. Service window in our records spans 75 days. Of those flights, 8 (8.2%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Van's Aircraft RV-4 has a maximum takeoff weight of 1,500 lb, light wake category.

About the Van's Aircraft RV-4

The Van's RV-4 is a tandem two-seat homebuilt aircraft that established Van's Aircraft as the dominant force in kit aviation when it debuted in 1979. Designed by Richard VanGrunsven, the RV-4 was the first Van's model to achieve widespread success, combining aerobatic capability with cross-country efficiency in a package that amateur builders could complete in their garages. Its all-metal construction, proven Lycoming engine installations (typically 150-180 hp), and docile handling made it the template for the entire RV series that followed.

The type pioneered the concept of a "serious" homebuilt: an aircraft that could outperform many certified designs while remaining accessible to first-time builders. With a cruise speed around 180 knots and a roll rate exceeding 120 degrees per second, the RV-4 delivered fighter-like agility at a fraction of the cost. Though production plans ceased in 2003 when Van's shifted focus to the side-by-side RV-6 and later models, the RV-4 remains highly regarded in the experimental aircraft community for its honest aerobatic manners and efficient cross-country performance.

Its tandem seating and narrow fuselage give it a distinctly military aesthetic that appeals to builders seeking a sportier cockpit experience than the RV-6's side-by-side configuration offers. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
98
all time
FLOWN HOURS
85
tracked time
📍
AIRPORTS VISITED
40
unique
📡
CALLSIGNS
1
43 routes
📅
SERVICE PERIOD
05/26/2026 → 08/10/2026
first → last
INCIDENT RATE
8.2%
8 flagged

Top routes

By flight count

10
2
2
1
30II I19
1
1
1
1
1
1
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Van's Aircraft RV-4

Engines
Single Piston
Vref (approach)
65 kt
MTOW
1,500 lb
Wake category
L

Recent flights

Newest 50 operations of N32KX

50
08/10/2026
1h 29m
No alerts
08/10/2026
13m
No alerts
08/10/2026
1h 35m
No alerts
08/10/2026
25m
No alerts
08/09/2026
1h 26m
△ Low approach-stability score
08/09/2026
33m
No alerts
08/08/2026
1h 7m
No alerts
08/08/2026
29m
No alerts
08/08/2026
3h 51m
No alerts
08/08/2026
11m
No alerts
08/07/2026
54m
No alerts
08/07/2026
1h 26m
No alerts
08/06/2026
33m
No alerts
08/06/2026
1h 54m
No alerts
08/04/2026
51m
△ Low approach-stability score
08/03/2026
1h 28m
No alerts
08/03/2026
2h 21m
△ Low approach-stability score
08/03/2026
2h 4m
No alerts
07/31/2026
1h 6m
No alerts
07/31/2026
1h 23m
No alerts
07/31/2026
2h 13m
No alerts
07/29/2026
18m
No alerts
07/28/2026
1h 19m
No alerts
07/28/2026
7m
No alerts
07/28/2026
1h 17m
No alerts
07/23/2026
22m
△ Low approach-stability score
07/23/2026
41m
No alerts
07/21/2026
33m
⛨ TFR entry△ Low approach-stability score
07/21/2026
10m
No alerts
07/21/2026
17m
No alerts
07/20/2026
1h 19m
No alerts
07/20/2026
53m
No alerts
07/20/2026
19m
No alerts
07/19/2026
7m
No alerts
07/19/2026
26m
No alerts
07/13/2026
16m
No alerts
07/13/2026
8m
No alerts
07/13/2026
14m
No alerts
06/24/2026
16m
No alerts
06/24/2026
1h 1m
No alerts
06/23/2026
43m
No alerts
06/23/2026
28m
No alerts
06/22/2026
37m
No alerts
06/22/2026
1h 55m
No alerts
06/09/2026
3m
No alerts
06/08/2026
1h 18m
No alerts
06/03/2026
19m
No alerts
06/02/2026
16m
No alerts
06/02/2026
26m
No alerts
05/27/2026
36m
No alerts
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