N
N421BL
M4 AVIATION LLC · RDG → LNS
N421BL is operated by M4 AVIATION LLC between Reading Regional Carl A Spaatz Field (KRDG) and Lancaster Airport (KLNS). The flight is most often flown by a DIAMOND Diamond Twin Star. Typical block time is 0h 37m. SkyMeter has observed 15 legs of this flight number via ADS-B.
✈
FLIGHTS
15
last 90 days
⏱
AVG DURATION
37m
tracked time
📅
SERVICE PERIOD
06/02/2025 → 06/25/2026
first → last seen
🗺
ROUTES / TYPES
9 / 1
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged
Routes flown
By count · last 90 days
avg 14m
·
Motola's Helicopter Service Inc. Heliport → Reading Regional Carl A Spaatz Field
avg 1h 11m
·
Rockingham Memorial Hospital Heliport → Reading Regional Carl A Spaatz Field
Aircraft types
Equipment used on this number
Safety profile
Flagged flights · last 90 days
Go-arounds
0
Unstable approach
0
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 N421BL
06/25/2026
1h 4m
No alerts
06/03/2026
1h 4m
No alerts
05/15/2026
1h 10m
No alerts
03/20/2026
50m
△ Low approach-stability score
© SkyMeter ·
All flight data subject to ODbL attribution
·
Tracked: 90-day window