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 35m. SkyMeter has observed 67 legs of this flight number via ADS-B.

✈
FLIGHTS
67
last 90 days
⏱
AVG DURATION
35m
tracked time
📅
SERVICE PERIOD
04/20/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
28 / 1
city pairs · airframes
⚠
INCIDENT RATE
52.2%
35 flagged

Routes flown

By count · last 90 days

10
9MI1 → KBTL
4
avg 57m · Custer Main Heliport → Battle Creek Executive Airport at Kellogg Field
KBTL → K9D9
2
avg 13m · Battle Creek Executive Airport at Kellogg Field → Hastings
MI77 → KBTL
2
avg 5m · Shafter → Battle Creek Executive Airport at Kellogg Field
77MI → KBTL
2
avg 34m · David's → Battle Creek Executive Airport at Kellogg Field
77MI → KAZO
1
avg 14m · David's → Kalamazoo Battle Creek
MI69 → KBTL
1
avg 1h 10m · Battle Creek Health System Helistop → Battle Creek Executive Airport at Kellogg Field
KRMY → KBTL
1
avg 22m · Brooks Field → Battle Creek Executive Airport at Kellogg Field
MI69 → KOEB
1
avg 19m · Battle Creek Health System Helistop → Branch County
MI69 → 60G
1
avg 47m · Battle Creek Health System Helistop → Skyway Estates
KGRR → KBTL
1
avg 15m · Gerald R. Ford → Battle Creek Executive Airport at Kellogg Field

Aircraft types

Equipment used on this number

1
SR20 CIRRUS Cirrus SR-20
67

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
35
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
→
06/03/2026
40m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/03/2026
14m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/03/2026
18m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/03/2026
2h 3m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/02/2026
46m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/02/2026
47m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/01/2026
1h 2m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/01/2026
7m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
06/01/2026
1h 6m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/29/2026
48m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/29/2026
5m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/29/2026
18m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/28/2026
1h 7m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/28/2026
5m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/28/2026
18m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/28/2026
1h 9m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/28/2026
45m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/28/2026
51m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/27/2026
1h 16m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/27/2026
1h 4m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/27/2026
47m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/27/2026
16m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/27/2026
21m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/27/2026
49m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/27/2026
56m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/26/2026
28m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/26/2026
18m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/26/2026
42m
No alerts
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/26/2026
38m
△ Unstable
Replay Analysis
N919WMCIRRUS Cirrus SR-20
→
05/22/2026
1h 37m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window