NDU31 is operated by UNIVERSITY OF NORTH DAKOTA, C/O JOHN D ODEGARD SCHOOL OF AEROSPA between Crookston Municipal Kirkwood Field (KCKN) and Grand Forks International Airport (KGFK). The flight is most often flown by a PIPER Piper Cherokee. Typical block time is 0h 30m. SkyMeter has observed 391 legs of this flight number via ADS-B.

✈
FLIGHTS
391
last 90 days
⏱
AVG DURATION
30m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/25/2026
first → last seen
🗺
ROUTES / TYPES
74 / 1
city pairs · airframes
⚠
INCIDENT RATE
7.7%
30 flagged

Routes flown

By count · last 90 days

10
KCKN → KGFK
32
avg 20m · Crookston Municipal Kirkwood Field → Grand Forks
KGFK → KCKN
17
avg 31m · Grand Forks → Crookston Municipal Kirkwood Field
8ND4 → KGFK
15
avg 8m · Heyde → Grand Forks
MN81 → KGFK
12
avg 6m · J J and T → Grand Forks
KGFK → D06
11
avg 17m · Grand Forks → Minto
KGFK → K4V4
10
avg 32m · Grand Forks → Northwood Municipal Vince Field
2MN0 → KGFK
8
avg 12m · Pribbs Field → Grand Forks
MN38 → KGFK
7
avg 9m · Spud Field → Grand Forks
KRDR → KGFK
6
avg 8m · Grand Forks Air Force Base → Grand Forks
KGFK → KGAF
6
avg 32m · Grand Forks → Hutson Field

Aircraft types

Equipment used on this number

1
P28A PIPER Piper Cherokee
393

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
30
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 NDU31

30
N631NDPIPER Piper Cherokee
→
08/25/2026
6m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/25/2026
19m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/25/2026
25m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/25/2026
2m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/25/2026
12m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/24/2026
4m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/24/2026
12m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/24/2026
3m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/24/2026
1h 11m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/21/2026
13m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/21/2026
26m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/21/2026
12m
△ Low approach-stability score
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/21/2026
39m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/20/2026
13m
△ Low approach-stability score
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/18/2026
1h 8m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/18/2026
9m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/18/2026
14m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/18/2026
38m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/17/2026
7m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/17/2026
16m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/17/2026
10m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/17/2026
34m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/17/2026
1h 21m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/17/2026
14m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/17/2026
26m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/14/2026
7m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/14/2026
1h 0m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/14/2026
1h 32m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/14/2026
23m
No alerts
Replay Analysis
N631NDPIPER Piper Cherokee
→
08/14/2026
1h 25m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window