1 Feb
N421EF
LANDED
21:36
Boulder, CO (WBU)
N/A
GLID
Departed
21:36
7 days ago
N421EF
N421EF
LANDED
Last seen near
Boulder, CO, United States
Sunday, February 1 2026
14:36 MST
Departed
Sunday, February 1 2026
N/A
Position Info
Latitude
-
Longitude
-
Altitude
-
Ground Speed
Wind
Air Temperature
Vertical Speed
Heading
-
Squawk
-
Source
-
Station
-
FIR
Aircraft Info
Aircraft Model
Registration
Mode-S
Serial Number
21905
Aircraft Age
Owner
Last Activity
10 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
  • 8 Feb
    N421EF
    DEPARTED 11h 12m AGO
    22:30
    Boulder, CO (WBU)
    N/A
    N421EF (GLID)
    Departed
    22:30
    11 hours ago
  • 8 Feb
    N421EF
    STATUS N/A
    N421EF (GLID)
  • 6 Feb
    N421EF
    LANDED 2d AGO
    22:06
    Boulder, CO (WBU)
    23:10
    Boulder, CO (WBU)
    01h04m
    N421EF (GLID)
    Departed
    22:06
    2 days ago
    Arrived
    23:10
    2 days ago
  • 6 Feb
    N421EF
    LANDED 2d AGO
    N/A
    21:29
    Boulder, CO (WBU)
    N421EF (GLID)
    Arrived
    21:29
    2 days ago
  • 5 Feb
    N421EF
    LANDED 3d AGO
    22:53
    Boulder, CO (WBU)
    23:48
    Boulder, CO (WBU)
    00h55m
    N421EF (GLID)
    Departed
    22:53
    3 days ago
    Arrived
    23:48
    3 days ago
  • 5 Feb
    N421EF
    LANDED 3d AGO
    20:15
    Boulder, CO (WBU)
    22:23
    Boulder, CO (WBU)
    02h07m
    N421EF (GLID)
    Departed
    20:15
    4 days ago
    Arrived
    22:23
    3 days ago
  • 5 Feb
    N421EF
    LANDED 3d AGO
    16:48
    Boulder, CO (WBU)
    17:40
    Boulder, CO (WBU)
    00h51m
    N421EF (GLID)
    Departed
    16:48
    4 days ago
    Arrived
    17:40
    4 days ago
  • 4 Feb
    N421EF
    LANDED
    20:09
    Boulder, CO (WBU)
    N/A
    N421EF (GLID)
    Departed
    20:09
    5 days ago
  • 4 Feb
    N421EF
    LANDED
    18:33
    Boulder, CO (WBU)
    N/A
    N421EF (GLID)
    Departed
    18:33
    5 days ago
  • 4 Feb
    N421EF
    LANDED
    N421EF (GLID)
  • 2 Feb
    N421EF
    LANDED 6d AGO
    N/A
    22:49
    Boulder, CO (WBU)
    N421EF (GLID)
    Arrived
    22:49
    6 days ago
  • 1 Feb
    N421EF
    LANDED
    21:36
    Boulder, CO (WBU)
    N/A
    N421EF (GLID)
    Departed
    21:36
    7 days ago
DateFlightOriginSTDATDDestinationSTADelayStatusDurationReplay
2026 Feb 8
N421EF
Boulder, CO (WBU/KBDU)
15:30 MST
Departed
2026 Feb 8
N421EF
First seen near
Boulder, CO, United States
Status N/A
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
2026 Feb 2
N421EF
First seen near
Boulder, CO, United States		Boulder, CO (WBU/KBDU)
Landed 15:49 MST
Landing time derived from ADS-B/Radar data
2026 Feb 1
N421EF
Boulder, CO (WBU/KBDU)
14:36 MST
Last seen near
Boulder, CO, United States
Landed

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