N
N4201B
HOLBERT FRANK L · 7LL2 → UGN
N4201B is operated by HOLBERT FRANK L between Vista Medical Center-East Heliport (7LL2) and Waukegan National Airport (KUGN). The flight is most often flown by a BELLANCA Bellanca Viking. Typical block time is 0h 25m. SkyMeter has observed 6 legs of this flight number via ADS-B.
✈
FLIGHTS
6
last 90 days
⏱
AVG DURATION
25m
tracked time
📅
SERVICE PERIOD
6/4/2025 → 7/9/2026
first → last seen
🗺
ROUTES / TYPES
4 / 1
city pairs · airframes
⚠
INCIDENT RATE
16.7%
1 flagged
Routes flown
By count · last 90 days
Aircraft types
Equipment used on this number
Safety profile
Flagged flights · last 90 days
Go-arounds
0
Unstable approach
1
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 N4201B
7/9/2026
27m
△ Low approach-stability score
7/2/2026
28m
No alerts
4/22/2026
1h 30m
No alerts
4/21/2026
1h 26m
No alerts
3/28/2026
2h 13m
No alerts
3/28/2026
2h 36m
No alerts
3/25/2026
1h 52m
No alerts
3/25/2026
40m
No alerts
3/21/2026
24m
△ Low approach-stability score
3/21/2026
11m
No alerts
3/8/2026
3h 11m
△ Low approach-stability score
3/8/2026
1h 10m
No alerts
3/3/2026
1h 24m
No alerts
3/3/2026
1h 38m
No alerts
3/3/2026
2h 58m
No alerts
3/3/2026
2h 4m
No alerts
12/1/2025
24m
No alerts
10/11/2025
42m
No alerts
9/13/2025
23m
No alerts
© SkyMeter ·
All flight data subject to ODbL attribution
·
Tracked: 90-day window