BYF4 is operated by SAN CARLOS FLIGHT CENTER INC between San Carlos Airport (KSQL) and Hayward Executive Airport (KHWD). The flight is most often flown by a CESSNA Cessna 152. Typical block time is 0h 46m. SkyMeter has observed 63 legs of this flight number via ADS-B.

✈
FLIGHTS
63
last 90 days
⏱
AVG DURATION
46m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/15/2026
first → last seen
🗺
ROUTES / TYPES
20 / 1
city pairs · airframes
⚠
INCIDENT RATE
6.3%
4 flagged

Routes flown

By count · last 90 days

10
KSQL → KHWD
5
avg 53m · San Carlos → Hayward Executive
KSQL → KSCK
2
avg 1h 12m · San Carlos → Stockton Metropolitan
KSQL → KRHV
2
avg 31m · San Carlos → Reid-Hillview Airport of Santa Clara County
KOAK → KSQL
2
avg 42m · Metropolitan Oakland → San Carlos
KRHV → KSQL
2
avg 31m · Reid-Hillview Airport of Santa Clara County → San Carlos
KHWD → KSQL
1
avg 15m · Hayward Executive → San Carlos
KSQL → KLVK
1
avg 25m · San Carlos → Livermore
KSAC → KSQL
1
avg 1h 33m · Sacramento Executive → San Carlos
KLSN → KSQL
1
avg 55m · Los Banos → San Carlos
40CL → KSQL
1
avg 33m · Joby Aero, Inc Heliport → San Carlos

Aircraft types

Equipment used on this number

1
C152 CESSNA Cessna 152
63

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
4
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 BYF4

30
N111RKCESSNA Cessna 152
→
8/15/2026
40m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/15/2026
1h 12m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/13/2026
48m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/13/2026
21m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/13/2026
58m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/11/2026
1h 33m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/11/2026
55m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/10/2026
33m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/9/2026
1h 9m
△ Low approach-stability score
Replay Analysis
N111RKCESSNA Cessna 152
→
8/9/2026
15m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/9/2026
31m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/9/2026
32m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/9/2026
34m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/8/2026
12m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/8/2026
1h 2m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/8/2026
1h 18m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/8/2026
16m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/8/2026
55m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/6/2026
34m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/6/2026
17m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/6/2026
1h 12m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/6/2026
43m
△ Low approach-stability score
Replay Analysis
N111RKCESSNA Cessna 152
→
8/5/2026
49m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/5/2026
15m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/4/2026
32m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/4/2026
1h 32m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/4/2026
1h 31m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/2/2026
43m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/2/2026
53m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
7/31/2026
12m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window