Follow Flight N421EF from Boulder, CO to Boulder, CO on AirNav Radar

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Flight info

Airline/Operator

Private

Duration

00h51m

Distance

Position Info

Latitude

Longitude

Altitude

Ground Speed

Wind

Air Temperature

Vertical Speed

Heading

Squawk

Source

Station

FIR

Aircraft Info

Aircraft Model

Schleicher ASK-21

Registration

N421EF

Mode-S

A4FFC0

Serial Number

21905

Aircraft Age

Owner

Last Activity

15 hours ago

Last Known Location

Boulder, CO, United States

Aircraft Type

Nr. Engines

Nr. Seats

Weight Class

Cruising Speed

Engine

Engine Type

Aircraft Category

Registrant Type

Airworthiness Class

Operation Types

Certificate Issue Date

Registration Status

Flight Activity

10 Feb
N421EF
STATUS N/A
N421EF (GLID)
9 Feb
N421EF
STATUS N/A
N421EF (GLID)
9 Feb
N421EF
STATUS N/A
N421EF (GLID)
8 Feb
N421EF
LANDED
22:30
Boulder, CO (WBU)
N/A
N421EF (GLID)
Departed
22:30
3 days ago
8 Feb
N421EF
LANDED
N421EF (GLID)
6 Feb
N421EF
LANDED 4d AGO
22:06
Boulder, CO (WBU)
23:10
Boulder, CO (WBU)
01h04m
N421EF (GLID)
Departed
22:06
5 days ago
Arrived
23:10
4 days ago
6 Feb
N421EF
LANDED 4d AGO
N/A
21:29
Boulder, CO (WBU)
N421EF (GLID)
Arrived
21:29
5 days ago
5 Feb
N421EF
LANDED 5d AGO
22:53
Boulder, CO (WBU)
23:48
Boulder, CO (WBU)
00h55m
N421EF (GLID)
Departed
22:53
6 days ago
Arrived
23:48
5 days ago
5 Feb
N421EF
LANDED 5d AGO
20:15
Boulder, CO (WBU)
22:23
Boulder, CO (WBU)
02h07m
N421EF (GLID)
Departed
20:15
6 days ago
Arrived
22:23
6 days ago
5 Feb
N421EF
LANDED 5d AGO
16:48
Boulder, CO (WBU)
17:40
Boulder, CO (WBU)
00h51m
N421EF (GLID)
Departed
16:48
6 days ago
Arrived
17:40
6 days ago
4 Feb
N421EF
LANDED
20:09
Boulder, CO (WBU)
N/A
N421EF (GLID)
Departed
20:09
7 days ago
4 Feb
N421EF
LANDED
18:33
Boulder, CO (WBU)
N/A
N421EF (GLID)
Departed
18:33
7 days ago
4 Feb
N421EF
LANDED
N421EF (GLID)

Date	Flight	Origin	ATD	Destination	Status	Duration
2026 Feb 10	N421EF	First seen near Boulder, CO, United States			Status N/A
2026 Feb 9	N421EF	First seen near Boulder, CO, United States		Last seen near Boulder, CO, United States	Status N/A
2026 Feb 9	N421EF	First seen near Boulder, CO, United States		Last seen near Boulder, CO, United States	Status N/A
2026 Feb 8	N421EF	Boulder, CO (WBU/KBDU)	15:30 MST	Last seen near Boulder, CO, United States	Landed
2026 Feb 8	N421EF	First seen near Boulder, CO, United States		Last seen near Boulder, CO, United States	Landed
2026 Feb 6	N421EF	Boulder, CO (WBU/KBDU)	15:06 MST	Boulder, CO (WBU/KBDU)	Landed 16:10 MST Landing time derived from ADS-B/Radar data	01h04m
2026 Feb 6	N421EF	First seen near Boulder, CO, United States		Boulder, CO (WBU/KBDU)	Landed 14:29 MST Landing time derived from ADS-B/Radar data
2026 Feb 5	N421EF	Boulder, CO (WBU/KBDU)	15:53 MST	Boulder, CO (WBU/KBDU)	Landed 16:48 MST Landing time derived from ADS-B/Radar data	00h55m
2026 Feb 5	N421EF	Boulder, CO (WBU/KBDU)	13:15 MST	Boulder, CO (WBU/KBDU)	Landed 15:23 MST Landing time derived from ADS-B/Radar data	02h07m
2026 Feb 5	N421EF	Boulder, CO (WBU/KBDU)	09:48 MST	Boulder, CO (WBU/KBDU)	Landed 10:40 MST Landing time derived from ADS-B/Radar data	00h51m
2026 Feb 4	N421EF	Boulder, CO (WBU/KBDU)	13:09 MST	Last seen near Boulder, CO, United States	Landed
2026 Feb 4	N421EF	Boulder, CO (WBU/KBDU)	11:33 MST	Last seen near Boulder, CO, United States	Landed
2026 Feb 4	N421EF	First seen near Boulder, CO, United States		Last seen near Boulder, CO, United States	Landed

Flight history for N421EF is available for a period over 7 days under our Basic subscription. More details here
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