N999NB is operated by STOCKHAM CONSTRUCTION INC between Charles M. Schulz Sonoma County Airport (KSTS) and Merle K (Mudhole) Smith Airport (PACV). The flight is most often flown by a GULFSTREAM AEROSPACE Gulfstream IV/G400. Typical block time is 2h 22m. SkyMeter has observed 9 legs of this flight number via ADS-B.

✈
FLIGHTS
9
last 90 days
⏱
AVG DURATION
2h 22m
tracked time
📅
SERVICE PERIOD
05/29/2025 → 08/21/2026
first → last seen
🗺
ROUTES / TYPES
9 / 1
city pairs · airframes
⚠
INCIDENT RATE
11.1%
1 flagged

Routes flown

By count · last 90 days

7
KSTS → PACV
1
avg 3h 55m · Charles M. Schulz Sonoma County → Merle K (Mudhole) Smith
KCRQ → KSTS
1
avg 1h 20m · Mc Clellan-Palomar → Charles M. Schulz Sonoma County
KSAT → KSTS
1
avg 3h 32m · San Antonio → Charles M. Schulz Sonoma County
KSTS → KGXY
1
avg 2h 4m · Charles M. Schulz Sonoma County → Greeley–Weld County
KSTS → KBOI
1
avg 1h 4m · Charles M. Schulz Sonoma County → Boise Air Terminal/Gowen Field
KSTS → KRBD
1
avg 3h 22m · Charles M. Schulz Sonoma County → Dallas Executive
KSTS → KCRQ
1
avg 1h 17m · Charles M. Schulz Sonoma County → Mc Clellan-Palomar

Aircraft types

Equipment used on this number

1
GLF4 GULFSTREAM AEROSPACE Gulfstream IV/G400
11

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 N999NB

30
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
08/21/2026
3h 21m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
08/18/2026
2h 3m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
08/17/2026
3h 33m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
08/13/2026
3h 55m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
08/10/2026
1h 16m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
06/02/2026
1h 4m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/26/2026
1h 6m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/25/2026
12m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/25/2026
1h 19m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/25/2026
1h 16m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/25/2026
3h 32m
△ Low approach-stability score
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/23/2026
3h 1m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/23/2026
46m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/22/2026
22m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/22/2026
1h 9m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/22/2026
1h 16m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/16/2026
1h 54m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/13/2026
1h 29m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/04/2026
1h 28m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/03/2026
1h 5m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/03/2026
2h 34m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/03/2026
1h 5m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/01/2026
37m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
05/01/2026
37m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
04/30/2026
1h 4m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
04/30/2026
1h 42m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
04/14/2026
2h 51m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
04/13/2026
33m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
04/13/2026
1h 19m
No alerts
Replay Analysis
N999NBGULFSTREAM AEROSPACE Gulfstream IV/G400
→
04/13/2026
6h 5m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window