BKN21 is operated by SAINT LOUIS UNIVERSITY between St Louis Downtown Airport (KCPS) and Sackman Field (H49). The flight is most often flown by a DIAMOND Diamond 20 Katana. Typical block time is 0h 51m. SkyMeter has observed 91 legs of this flight number via ADS-B.

✈
FLIGHTS
91
last 90 days
⏱
AVG DURATION
51m
tracked time
📅
SERVICE PERIOD
5/31/2025 → 8/14/2026
first → last seen
🗺
ROUTES / TYPES
22 / 1
city pairs · airframes
⚠
INCIDENT RATE
3.3%
3 flagged

Routes flown

By count · last 90 days

10
KCPS → KSTL
3
avg 55m · St Louis Downtown → St Louis Lambert
KCPS → H49
3
avg 58m · St Louis Downtown → Sackman Field
KSAR → KCPS
2
avg 20m · Sparta Community Hunter Field → St Louis Downtown
KCPS → KSAR
2
avg 33m · St Louis Downtown → Sparta Community Hunter Field
KCPS → KSLO
1
avg 40m · St Louis Downtown → Salem Leckrone
MU15 → KCPS
1
avg 36m · Madison Memorial Heliport → St Louis Downtown
KAAA → KBMI
1
avg 15m · Logan County → Central Illinois Regional Airport at Bloomington-Normal
7IS2 → KCPS
1
avg 2h 25m · Aero Estates → St Louis Downtown
KCPS → KSPI
1
avg 42m · St Louis Downtown → Abraham Lincoln Capital
KCPS → KCOU
1
avg 1h 3m · St Louis Downtown → Columbia

Aircraft types

Equipment used on this number

1
DV20 DIAMOND Diamond 20 Katana
91

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
3
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 BKN21

30
N621PCDIAMOND Diamond 20 Katana
→
8/14/2026
48m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/13/2026
1h 13m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/11/2026
16m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/11/2026
17m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/10/2026
47m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/7/2026
1h 19m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/5/2026
20m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/5/2026
31m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/4/2026
1h 37m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/4/2026
45m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
8/3/2026
1h 4m
△ Low approach-stability score
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/30/2026
51m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/30/2026
1h 0m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/30/2026
52m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/29/2026
55m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/29/2026
50m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/29/2026
46m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/28/2026
50m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/27/2026
1h 42m
△ Low approach-stability score
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/24/2026
40m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/24/2026
39m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/23/2026
51m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/22/2026
35m
△ Low approach-stability score
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/22/2026
40m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/21/2026
1h 1m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/21/2026
56m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/20/2026
1h 7m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/17/2026
1h 26m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/16/2026
1h 0m
No alerts
Replay Analysis
N621PCDIAMOND Diamond 20 Katana
→
7/16/2026
1h 4m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window