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 48m. SkyMeter has observed 108 legs of this flight number via ADS-B.

✈
FLIGHTS
108
last 90 days
⏱
AVG DURATION
48m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/9/2026
first → last seen
🗺
ROUTES / TYPES
31 / 1
city pairs · airframes
⚠
INCIDENT RATE
9.3%
10 flagged

Routes flown

By count · last 90 days

10
KSQL → KHWD
8
avg 50m · San Carlos → Hayward Executive
KHWD → KSQL
3
avg 38m · Hayward Executive → San Carlos
KOAK → KSQL
2
avg 42m · Metropolitan Oakland → San Carlos
KSQL → KLVK
2
avg 59m · San Carlos → Livermore
KSQL → KRHV
2
avg 31m · San Carlos → Reid-Hillview Airport of Santa Clara County
KSQL → KSCK
2
avg 1h 12m · San Carlos → Stockton Metropolitan
KSQL → KSFO
2
avg 1h 16m · San Carlos → San Francisco
KRHV → KSQL
2
avg 31m · Reid-Hillview Airport of Santa Clara County → San Carlos
KSQL → KSTS
1
avg 55m · San Carlos → Charles M. Schulz Sonoma County
KLSN → KSQL
1
avg 55m · Los Banos → San Carlos

Aircraft types

Equipment used on this number

1
C152 CESSNA Cessna 152
108

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
10
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
→
9/9/2026
38m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/8/2026
39m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/8/2026
52m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/6/2026
1h 43m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/6/2026
1h 0m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/5/2026
1h 27m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/5/2026
59m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/5/2026
57m
△ Low approach-stability score
Replay Analysis
N111RKCESSNA Cessna 152
→
9/4/2026
10m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/4/2026
1h 2m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/3/2026
1h 13m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/3/2026
23m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/3/2026
43m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/2/2026
36m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
9/2/2026
50m
△ Low approach-stability score
Replay Analysis
N111RKCESSNA Cessna 152
→
8/31/2026
33m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/31/2026
1h 20m
△ Low approach-stability score
Replay Analysis
N111RKCESSNA Cessna 152
→
8/31/2026
41m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/30/2026
16m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/30/2026
1h 27m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/30/2026
1h 21m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/29/2026
59m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/29/2026
58m
△ Low approach-stability score
Replay Analysis
N111RKCESSNA Cessna 152
→
8/29/2026
11m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/29/2026
33m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/29/2026
41m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/28/2026
23m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/28/2026
1h 25m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/28/2026
1h 3m
No alerts
Replay Analysis
N111RKCESSNA Cessna 152
→
8/28/2026
15m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window