KARLEN JOHN R, KARLEN PATTY L· ICAO24 a7ac08· last seen 28d ago

N5938M is a Cessna 340, a twin-engine piston aircraft operated by KARLEN JOHN R, KARLEN PATTY L. SkyMeter has tracked 134 flights totalling 144 hours of airtime via ADS-B. The most frequent segment is KMHV to KVGT. Service window in our records spans 382 days. Of those flights, 20 (14.9%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Cessna 340 has a 38 ft wingspan, a maximum takeoff weight of 5,990 lb.

About the Cessna 340

The Cessna 340 is a pressurized cabin-class twin introduced in 1972, filling the gap between Cessna's unpressurized 310 and the larger 400-series twins. With its 5.5 psi cabin differential and twin Continental TSIO-520 engines producing 310 horsepower each, the 340 brought turbine-like comfort to the piston twin market, allowing pilots to cruise above most weather at altitudes up to 29,800 feet. The improved 340A variant, introduced in 1976, added longer wings and increased fuel capacity, extending range to over 1,300 nautical miles and becoming the definitive version of the type.

The 340 carved out a loyal following among owner-pilots and small charter operators who needed genuine all-weather capability without turboprop operating costs. Its pressurization system, relatively spacious six-seat cabin, and ability to maintain a sea-level cabin up to 20,000 feet made it a serious business tool for flying over the Rockies or across the country in instrument conditions. The aircraft's 190-knot cruise speed and 29,000-foot service ceiling put it in a performance class well above unpressurized twins, though it demanded respect for its higher approach speeds and more complex systems.

Cessna built 1,351 Model 340s between 1972 and 1984, with the 340A accounting for the majority of production. The type remains popular in the used market, particularly among pilots stepping up from unpressurized twins or stepping down from turboprops. Its combination of cabin comfort, high-altitude capability, and relatively modest fuel burn continues to make economic sense for missions where pressurization matters but turbine acquisition costs don't pencil out.

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

FLIGHTS
134
all time
FLOWN HOURS
144
tracked time
📍
AIRPORTS VISITED
24
unique
📡
CALLSIGNS
1
42 routes
📅
SERVICE PERIOD
05/27/2025 → 06/13/2026
first → last
INCIDENT RATE
14.9%
20 flagged

Top routes

By flight count

10
6
5
4
3
3
L57 KVGT
3
1
1
1
1

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Cessna 340

Engines
Twin Piston
Vref (approach)
94 kt
MTOW
5,990 lb
Wingspan
38 ft
Length
43 ft
Wake category
Light

Recent flights

Newest 50 operations of N5938M

50
06/13/2026
1h 29m
No alerts
06/06/2026
1h 37m
No alerts
05/31/2026
1h 4m
△ Unstable approach
05/30/2026
1h 24m
△ Unstable approach
05/30/2026
3h 15m
No alerts
05/21/2026
1h 16m
No alerts
05/21/2026
3h 3m
No alerts
05/20/2026
1h 9m
No alerts
05/13/2026
1h 25m
No alerts
05/13/2026
1h 26m
No alerts
03/30/2026
11m
△ Unstable approach
03/29/2026
1h 27m
No alerts
03/22/2026
1h 21m
No alerts
03/20/2026
1h 18m
No alerts
03/17/2026
18m
△ Unstable approach
02/15/2026
1h 13m
No alerts
02/13/2026
1h 21m
No alerts
01/30/2026
1h 11m
No alerts
01/29/2026
1h 29m
No alerts
01/24/2026
1h 20m
△ Unstable approach
01/16/2026
34m
△ Unstable approach
01/11/2026
41m
△ Unstable approach
12/01/2025
39m
△ Unstable approach
11/03/2025
1h 11m
No alerts
10/30/2025
1h 12m
No alerts
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