· ICAO24 68326c· last seen 18d ago

UP-B3723 is a Boeing 737-500, a twin-engine jet. SkyMeter has tracked 58 flights totalling 216 hours of airtime via ADS-B across 14 callsigns. Service window in our records spans 141 days. Of those flights, 2 (3.4%) carry at least one detected incident — go-around, unstable approach, stall warning, or runway excursion. The Boeing 737-500 has a 95 ft wingspan, a maximum takeoff weight of 136,000 lb.

About the Boeing 737-500

The Boeing 737-500 is the smallest and final member of the 737 Classic family, introduced in 1990 as a modern replacement for the aging 737-200. Designed to serve short-haul, high-frequency routes with reduced capacity, the -500 seats 108-132 passengers and features the CFM56-3 high-bypass turbofans that defined the Classic generation. Its compact size and excellent hot-and-high performance made it popular with airlines operating from challenging airports, though it was ultimately overshadowed by the more versatile 737-300 and -400 variants. Boeing delivered only 389 examples before production ended in 1999, making it the rarest of the Classics.

Despite its limited production run, the 737-500 carved out a loyal niche among regional carriers and charter operators, particularly in Russia, Africa, and Southeast Asia where its rugged design and short-field capability proved invaluable. The type can operate from runways as short as 5,900 feet and maintain respectable economics on thin routes where larger jets would fly half-empty. Its maximum cruising altitude of 37,000 feet and range of approximately 2,400 nautical miles allow it to connect secondary cities across continents without the fuel burn penalties of older-generation aircraft.

Today the 737-500 is increasingly rare in commercial service as operators transition to more fuel-efficient Next Generation and MAX variants, but a dedicated fleet remains active in cargo conversion, government transport, and niche passenger operations. The type's simplicity and commonality with other 737 Classics have extended its operational life well beyond Boeing's original projections. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.

FLIGHTS
58
all time
FLOWN HOURS
216
tracked time
📍
AIRPORTS VISITED
2
unique
📡
CALLSIGNS
14
3 routes
📅
SERVICE PERIOD
01/28/2026 → 06/19/2026
first → last
INCIDENT RATE
3.4%
2 flagged

Top routes

By flight count

0

No route data.

Aircraft specifications

Boeing 737-500

Engines
Twin Jet
Vref (approach)
128 kt
Vmo
340 kt
MTOW
136,000 lb
Wingspan
95 ft
Length
102 ft
Wake category
Medium

Recent flights

Newest 29 operations of UP-B3723

29
06/19/2026
6h 12m
No alerts
06/09/2026
14h 42m
No alerts
04/13/2026
3h 25m
No alerts
04/13/2026
3h 25m
No alerts
04/01/2026
12h 39m
No alerts
03/20/2026
6h 36m
No alerts
03/18/2026
18m
△ Unstable approach
03/17/2026
6h 30m
No alerts
03/15/2026
9h 34m
No alerts
03/15/2026
2h 18m
No alerts
03/13/2026
3h 28m
No alerts
03/13/2026
2h 25m
No alerts
03/10/2026
5h 55m
No alerts
03/10/2026
2h 34m
No alerts
03/07/2026
8h 40m
No alerts
03/06/2026
2h 17m
No alerts
03/05/2026
2h 58m
No alerts
03/04/2026
3h 14m
No alerts
03/04/2026
2h 40m
No alerts
02/27/2026
4h 11m
No alerts
02/21/2026
2h 20m
No alerts
© SkyMeter · All flight data subject to ODbL attribution