UNITED AIRLINES INC· ICAO24 aa4440· last seen 3d ago

N76021 is a Boeing 777-200, a twin-engine jet operated by UNITED AIRLINES INC. SkyMeter has tracked 1,420 flights totalling 11,584 hours of airtime via ADS-B across 105 callsigns. The most frequent segment is KIAD to EGLL. Service window in our records spans 447 days. Of those flights, 8 (0.6%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Boeing 777-200 has a 200 ft wingspan, a maximum takeoff weight of 656,000 lb.

About the Boeing 777-200

The Boeing 777-200 was the world's first widebody twinjet certified for extended-range overwater operations at entry into service in 1995, fundamentally reshaping long-haul aviation economics by eliminating the need for three- and four-engine aircraft on many routes. Launched with United Airlines and developed in close collaboration with eight major carriers, the 777 introduced fly-by-wire to Boeing's commercial fleet and became the first airliner designed entirely on computer workstations. Its GE90, Pratt & Whitney PW4000, or Rolls-Royce Trent 800 engines were the largest-diameter turbofans ever hung on a commercial aircraft at the time, each producing up to 90,000 pounds of thrust.

The baseline 777-200 seats 305-440 passengers in typical configurations and offers a range of approximately 5,240 nautical miles, making it ideal for high-density domestic trunk routes and medium-haul international services. While the stretched 777-300 and long-range 777-200ER variants followed, the original 777-200 established the type's reputation for dispatch reliability above 99 percent and operational flexibility that allowed airlines to right-size capacity on routes previously requiring 747s or DC-10s. The aircraft cruises at Mach 0.84 at altitudes up to 43,100 feet, with a maximum operating speed of 330 knots IAS or Mach 0.89.

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

FLIGHTS
1,420
all time
FLOWN HOURS
11,584
tracked time
📍
AIRPORTS VISITED
35
unique
📡
CALLSIGNS
105
118 routes
📅
SERVICE PERIOD
05/27/2025 → 08/18/2026
first → last
INCIDENT RATE
0.6%
8 flagged

Top routes

By flight count

10
20
19
19
17
17
13
13
13
12
12

Aircraft specifications

Boeing 777-200

Engines
Twin Jet
Vref (approach)
140 kt
Vmo
330 kt
MTOW
656,000 lb
Wingspan
200 ft
Length
209 ft
Wake category
Heavy

Recent flights

Newest 50 operations of N76021

50
08/16/2026
11h 3m
No alerts
08/16/2026
1h 55m
No alerts
08/16/2026
12h 12m
No alerts
08/15/2026
12h 52m
No alerts
08/14/2026
10h 55m
No alerts
08/14/2026
4h 20m
No alerts
08/13/2026
2h 54m
No alerts
08/13/2026
10h 29m
No alerts
08/13/2026
9h 22m
No alerts
08/10/2026
6h 40m
No alerts
08/09/2026
5h 54m
No alerts
08/09/2026
12h 35m
No alerts
08/08/2026
8h 24m
No alerts
08/07/2026
2h 33m
No alerts
08/06/2026
2h 22m
No alerts
08/06/2026
2h 13m
No alerts
08/05/2026
1h 19m
No alerts
08/05/2026
12h 54m
No alerts
08/04/2026
1h 27m
No alerts
08/04/2026
12h 43m
No alerts
08/03/2026
13h 50m
No alerts
08/03/2026
3h 33m
No alerts
08/02/2026
8h 55m
No alerts
08/02/2026
12h 29m
No alerts
08/02/2026
10h 50m
No alerts
08/01/2026
11h 22m
No alerts
08/01/2026
8h 10m
No alerts
07/31/2026
1h 41m
No alerts
07/31/2026
12h 57m
No alerts
07/30/2026
13h 52m
No alerts
07/29/2026
9h 55m
No alerts
07/29/2026
11h 57m
No alerts
07/29/2026
10h 49m
No alerts
07/28/2026
3h 32m
No alerts
© SkyMeter · All flight data subject to ODbL attribution