Flight Status & Tracker

N421EF

SOARING SOCIETY OF BOULDER · WBU → KLMO · Last tracked Oct 4, 2026

N421EF is a flight number operated by SOARING SOCIETY OF BOULDER between Boulder Municipal Airport (KBDU) and Vance Brand Airport (KLMO). SkyMeter last tracked N421EF on October 4, 2026. The flight is most often flown by a . Typical block time is 0h 36m. SkyMeter has observed 68 legs of this flight number via ADS-B.

SkyMeter tracks historical flight activity from ADS-B data — this is not a live gate-to-gate status feed.

✈
FLIGHTS
68
last 90 days
⏱
AVG DURATION
36m
tracked time
📅
SERVICE PERIOD
6/9/2025 → 10/4/2026
first → last seen
🗺
ROUTES / TYPES
5 / 1
city pairs · airframes
⚠
INCIDENT RATE
19.1%
13 flagged

Routes flown

By count · last 90 days

4
KBDU → KLMO
8
avg 39m · Boulder → Vance Brand
KBDU → KBJC
4
avg 30m · Boulder → Rocky Mountain Metropolitan
KBDU → KEIK
1
avg 23m · Boulder → Erie
KBDU → 7CO0
1
avg 39m · Boulder → Parkland

Aircraft types

Equipment used on this number

1
AS21 AS21
68

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
13
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of N421EF

30
N421EFAS21
→
10/4/2026
17m
No alerts
Replay Analysis
N421EFAS21
→
10/4/2026
15m
△ Low approach-stability score
Replay Analysis
N421EFAS21
→
10/4/2026
47m
No alerts
Replay Analysis
N421EFAS21
→
10/4/2026
21m
No alerts
Replay Analysis
N421EFAS21
→
10/4/2026
12m
No alerts
Replay Analysis
N421EFAS21
→
10/3/2026
58m
No alerts
Replay Analysis
N421EFAS21
→
9/29/2026
33m
No alerts
Replay Analysis
N421EFAS21
→
9/29/2026
1h 10m
No alerts
Replay Analysis
N421EFAS21
→
9/27/2026
39m
No alerts
Replay Analysis
N421EFAS21
→
9/27/2026
1h 16m
△ Low approach-stability score
Replay Analysis
N421EFAS21
→
9/8/2026
16m
△ Low approach-stability score
Replay Analysis
N421EFAS21
→
9/8/2026
1h 8m
No alerts
Replay Analysis
N421EFAS21
→
9/5/2026
1h 17m
No alerts
Replay Analysis
N421EFAS21
→
9/4/2026
1h 3m
△ Low approach-stability score
Replay Analysis
N421EFAS21
→
9/1/2026
15m
No alerts
Replay Analysis
N421EFAS21
→
8/31/2026
42m
No alerts
Replay Analysis
N421EFAS21
→
8/30/2026
32m
△ Low approach-stability score
Replay Analysis
N421EFAS21
→
8/30/2026
38m
No alerts
Replay Analysis
N421EFAS21
→
8/30/2026
33m
No alerts
Replay Analysis
N421EFAS21
→
8/29/2026
28m
No alerts
Replay Analysis
N421EFAS21
→
8/28/2026
1h 14m
No alerts
Replay Analysis
N421EFAS21
→
8/27/2026
15m
No alerts
Replay Analysis
N421EFAS21
→
8/27/2026
46m
No alerts
Replay Analysis
N421EFAS21
→
8/24/2026
58m
△ Low approach-stability score
Replay Analysis
N421EFAS21
→
8/24/2026
24m
No alerts
Replay Analysis
N421EFAS21
→
8/23/2026
12m
△ Low approach-stability score
Replay Analysis
N421EFAS21
→
8/23/2026
28m
No alerts
Replay Analysis
N421EFAS21
→
8/23/2026
5m
No alerts
Replay Analysis
N421EFAS21
→
8/23/2026
1h 14m
No alerts
Replay Analysis
N421EFAS21
→
8/22/2026
50m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window