NDU81 is operated by UND AEROSPACE FOUNDATION between Heyde Airport (8ND4) and Grand Forks International Airport (KGFK). The flight is most often flown by a PIPER Piper Cherokee. Typical block time is 0h 31m. SkyMeter has observed 393 legs of this flight number via ADS-B.

✈
FLIGHTS
393
last 90 days
⏱
AVG DURATION
31m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/14/2026
first → last seen
🗺
ROUTES / TYPES
96 / 1
city pairs · airframes
⚠
INCIDENT RATE
6.1%
24 flagged

Routes flown

By count · last 90 days

10
8ND4 → KGFK
21
avg 8m · Heyde → Grand Forks
KCKN → KGFK
12
avg 16m · Crookston Municipal Kirkwood Field → Grand Forks
KGFK → KCKN
11
avg 24m · Grand Forks → Crookston Municipal Kirkwood Field
2MN0 → KGFK
9
avg 9m · Pribbs Field → Grand Forks
MN81 → KGFK
8
avg 6m · J J and T → Grand Forks
KGFK → K4V4
7
avg 29m · Grand Forks → Northwood Municipal Vince Field
KGFK → KD37
7
avg 22m · Grand Forks → Warren
KGFK → KD56
6
avg 29m · Grand Forks → Mayville
KGFK → D06
6
avg 15m · Grand Forks → Minto
4ND1 → KGFK
6
avg 8m · Knutson → Grand Forks

Aircraft types

Equipment used on this number

1
P28A PIPER Piper Cherokee
395

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
24
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 NDU81

30
N381NDPIPER Piper Cherokee
→
8/14/2026
1h 3m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/14/2026
3m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/14/2026
34m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/14/2026
39m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/14/2026
1h 33m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/13/2026
1h 16m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/13/2026
1h 0m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/12/2026
8m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/12/2026
54m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/11/2026
26m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/11/2026
40m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
10m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
1h 8m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
3m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
2h 19m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
3m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
26m
△ Low approach-stability score
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
11m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
48m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/10/2026
24m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/8/2026
21m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/8/2026
43m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/8/2026
42m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/8/2026
1h 25m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/8/2026
9m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/8/2026
23m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/8/2026
1h 1m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/7/2026
1h 18m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/7/2026
9m
No alerts
Replay Analysis
N381NDPIPER Piper Cherokee
→
8/7/2026
13m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window