40THIRTY1 AVIATION LLC· ICAO24 a4ba43· last seen 24d ago

N4031B is a Cessna Citation II/Bravo, a twin-engine jet operated by 40THIRTY1 AVIATION LLC. SkyMeter has tracked 220 flights totalling 310 hours of airtime via ADS-B. The most frequent segment is KFYV to KJBR. Service window in our records spans 381 days. Of those flights, 94 (42.7%) carry at least one detected incident — go-around, unstable approach, stall warning, or runway excursion. The Cessna Citation II/Bravo has a 52 ft wingspan, a maximum takeoff weight of 15,100 lb.

About the Cessna Citation II/Bravo

The Cessna Citation II, introduced in 1978, became one of the most successful light business jets ever built and established the Citation family as the dominant force in corporate aviation. Stretching the original Citation fuselage by nearly four feet and adding more powerful Pratt & Whitney JT15D-4 engines, Cessna created an aircraft that could carry eight passengers up to 1,500 nautical miles at 400 knots—performance that hit the sweet spot for corporate flight departments and charter operators. Over 1,000 Citation IIs were delivered before production ended in 2006, making it one of the longest-running business jet programs in history.

The type earned a reputation for exceptional reliability, straightforward systems, and operating economics that allowed even smaller companies to justify owning a jet. Its straight wing and docile handling made it popular with owner-pilots transitioning from piston twins, while its ability to operate from shorter runways opened up thousands of airports inaccessible to larger jets. The Citation II's success spawned the Bravo variant with upgraded avionics and FADEC engines, extending the design's relevance into the 21st century.

Hundreds remain in active service worldwide, valued for their low acquisition costs and proven dispatch reliability. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
220
all time
FLOWN HOURS
310
tracked time
📍
AIRPORTS VISITED
25
unique
📡
CALLSIGNS
1
44 routes
📅
SERVICE PERIOD
05/29/2025 → 06/15/2026
first → last
INCIDENT RATE
42.7%
94 flagged

Top routes

By flight count

10
14
13
9
9
2
2
2
2
2
2

Flight numbers

Most-flown by this airframe

1

Aircraft specifications

Cessna Citation II/Bravo

Engines
Twin Jet
Vref (approach)
105 kt
Vmo
262 kt
MTOW
15,100 lb
Wingspan
52 ft
Length
47 ft
Wake category
Light

Recent flights

Newest 50 operations of N4031B

50
06/15/2026
1h 24m
△ Unstable approach
06/15/2026
39m
△ Unstable approach
06/14/2026
1h 14m
△ Unstable approach
06/12/2026
1h 22m
△ Unstable approach
06/01/2026
41m
△ Unstable approach
04/17/2026
49m
△ Unstable approach
04/17/2026
2h 20m
△ Unstable approach
04/14/2026
22m
△ Unstable approach
03/31/2026
1h 23m
△ Unstable approach
03/21/2026
1h 20m
△ Unstable approach
03/16/2026
1h 35m
△ Unstable approach
03/13/2026
45m
△ Unstable approach
03/08/2026
1h 15m
△ Unstable approach
02/23/2026
2h 42m
△ Unstable approach
02/17/2026
1h 24m
△ Unstable approach
02/13/2026
1h 34m
△ Unstable approach
02/04/2026
36m
△ Unstable approach
02/03/2026
1h 12m
△ Unstable approach
02/02/2026
1h 8m
△ Unstable approach
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