WMU91 is operated by BOARD OF TRUSTEES OF WESTERN MICHIGAN UNIVERSITY between Custer Main Heliport (9MI1) and Battle Creek Executive Airport at Kellogg Field (KBTL). The flight is most often flown by a CIRRUS Cirrus SR-20. Typical block time is 0h 33m. SkyMeter has observed 208 legs of this flight number via ADS-B.

✈
FLIGHTS
208
last 90 days
⏱
AVG DURATION
33m
tracked time
📅
SERVICE PERIOD
05/30/2025 → 07/18/2026
first → last seen
🗺
ROUTES / TYPES
69 / 1
city pairs · airframes
⚠
INCIDENT RATE
1.0%
2 flagged

Routes flown

By count · last 90 days

10
9MI1 → KBTL
10
avg 43m · Custer Main Heliport → Battle Creek Executive Airport at Kellogg Field
KBTL → KOEB
9
avg 18m · Battle Creek Executive Airport at Kellogg Field → Branch County
KHAI → KBTL
5
avg 28m · Three Rivers Municipal Dr Haines → Battle Creek Executive Airport at Kellogg Field
MI77 → KBTL
4
avg 4m · Shafter → Battle Creek Executive Airport at Kellogg Field
KBTL → KAZO
3
avg 29m · Battle Creek Executive Airport at Kellogg Field → Kalamazoo Battle Creek
MI69 → KBTL
3
avg 56m · Battle Creek Health System Helistop → Battle Creek Executive Airport at Kellogg Field
66MI → KBTL
3
avg 4m · East Lake → Battle Creek Executive Airport at Kellogg Field
MI69 → KOEB
3
avg 11m · Battle Creek Health System Helistop → Branch County
US-2579 → KBTL
2
avg 15m · A-1 Paint Horse Farm Heliport → Battle Creek Executive Airport at Kellogg Field
9MI1 → KAZO
2
avg 35m · Custer Main Heliport → Kalamazoo Battle Creek

Aircraft types

Equipment used on this number

1
SR20 CIRRUS Cirrus SR-20
210

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 WMU91

30
N919WMCIRRUS Cirrus SR-20
→
07/18/2026
2h 22m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/15/2026
11m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/15/2026
42m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/13/2026
4m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/13/2026
45m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/11/2026
1h 4m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/11/2026
10m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/11/2026
27m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/11/2026
1h 55m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/11/2026
41m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/11/2026
26m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/11/2026
1h 0m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/10/2026
57m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/10/2026
28m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/10/2026
5m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/10/2026
1h 2m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/10/2026
45m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/10/2026
3m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/09/2026
1h 12m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/09/2026
4m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/09/2026
7m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/09/2026
1h 5m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/09/2026
26m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/09/2026
13m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/08/2026
29m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/08/2026
15m
△ Low approach-stability score
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/08/2026
1h 19m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/08/2026
28m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/08/2026
23m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
07/08/2026
7m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window