N521TM
Cessna Citation SII
United States
VNY (Van Nuys Airport, Van Nuys)

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Viewing period:
Compared to: preceding 12 months · May 2024 – May 2025
May 2025 – Apr 2026·vs May 2024 – May 2025· Emissions increasing vs prior period

Emissions Overview

17.5
Tons CO2 This Month
Above Average4.1× avg for Citation SII
37.8
Tons CO2 YTD
Above Average3.4× avg for Citation SII
86.8
CO2 Tons Since 2025
Typical1.4× avg for Citation SII
Emissions Intensity0.01t CO₂/nmTypical1.1× avg for Citation SII
66.5 tons CO2 in selected period

2026 pace: On track for approximately 113t CO₂ by year end · ↑ 131% vs full year 2025 (49t)

Flight Patterns & Behaviour

Emissions up 217% vs prior period, driven by Billings → Boise

57t
Period total CO₂
1.8t
Avg per flight
32
Flights
Diverse Network3 routes account for 29% of total emissions
Highest emission route
Billings → Boise
6.5t CO₂ total · 0.0092t CO₂/nm
🇺🇸United States·16202 aircraft tracked·Ranked 1st by emissions among 109 countries·0.2× country averageBelow Average

Subject to FAA oversight — no mandatory carbon reporting for private aviation

What's ChangedCompared to prior equivalent period
Emissions
217%
18t → 57t CO₂
Intensity
48%
0.0104 → 0.0055 t CO₂/nm
New Routes
16
51t CO₂ combined
Dropped Routes
3
Prior period only
Avg per Flight
1%
1.8t → 1.8t
Flight Count
22
10 → 32 flights

Route and airport counts may include data processing artefacts.

Spikes

Significant deviations from this aircraft's baseline in the selected period.

CO₂ Above Baseline

36t

Signals Detected

5

Highest Severity

High

Aircraft
Medium
New25 Jul – 31 Jul 2025
Elevated activity period · 1 flights in 6 days vs baseline of 1
Contributed approximately 5t CO₂ to period total — 9% of period emissions
Aircraft
Medium
New15 Nov – 16 Dec 2025
Elevated activity period · 6 flights in 31 days vs baseline of 3
Contributed approximately 7t CO₂ to period total — 12% of period emissions
Aircraft
High
New4 Jan – 17 Jan 2026
Elevated activity period · 5 flights in 13 days vs baseline of 1
Contributed approximately 19t CO₂ to period total — 33% of period emissions
Aircraft
Medium
Historical2 May – 26 Jun 2025
56-day inactive period
4.1t CO₂ in the 7 days following resumption
Aircraft
Medium
Historical26 Jun – 18 Jul 2025
22-day inactive period
1.1t CO₂ in the 7 days following resumption
Recent Flights
Mar 23, 20262.4t CO₂
KEULBoise
KMHVMojave
598 miles1h 41m
Mar 20, 20260.5t CO₂
KVNYVan Nuys
KMHVMojave
62 miles16m
Mar 15, 20261.1t CO₂
KSACSacramento
KVNYVan Nuys
340 miles57m
Mar 11, 20260.5t CO₂
KVNYVan Nuys
KMHVMojave
62 miles19m
View Details
Mar 10, 20260.5t CO₂
KMYFSan Diego
KVNYVan Nuys
124 miles32m
View Details
Mar 9, 20260.5t CO₂
KVNYVan Nuys
KMYFSan Diego
124 miles29m
View Details
Mar 9, 20260.5t CO₂
KMYFSan Diego
KVNYVan Nuys
124 miles36m
View Details
Mar 9, 20260.5t CO₂
KVNYVan Nuys
KMYFSan Diego
124 miles30m
View Details
Mar 9, 20260.5t CO₂
KMYFSan Diego
KVNYVan Nuys
124 miles30m
View Details
Mar 8, 20260.8t CO₂
KHNDLas Vegas
KMYFSan Diego
246 miles46m
View Details
Feb 26, 20263.4t CO₂
KMHVMojave
KVUOPortland
767 miles2h 15m
View Details
Feb 26, 20262.6t CO₂
KEULBoise
KMHVMojave
598 miles1h 49m
View Details
Jan 16, 20264.7t CO₂
KHUTHutchinson
KEULBoise
1,050 miles3h 1m
View Details
Jan 16, 20265.2t CO₂
KFLLFt Lauderdale
KTULTulsa
1,161 miles3h 18m
View Details
Jan 11, 20263.8t CO₂
KMHVMojave
KEULBoise
598 miles2h 29m
View Details
Jan 10, 20260.5t CO₂
KBURBurbank
KMHVMojave
60 miles16m
View Details
Jan 8, 20264.7t CO₂
KBURBurbank
KMCIKansas City
1,350 miles3h 0m
View Details
Dec 28, 20251.2t CO₂
KMFRMedford
KEULBoise
327 miles1h 0m
View Details
Dec 21, 20251.0t CO₂
KMFRMedford
KEULBoise
327 miles51m
View Details
Dec 16, 20252.5t CO₂
KMHVMojave
KBOIBoise
596 miles1h 43m
View Details
Dec 15, 20251.3t CO₂
KMHVMojave
KSVESusanville
390 miles1h 3m
View Details
Nov 28, 20251.0t CO₂
KMFRMedford
KEULBoise
327 miles53m
View Details
Nov 26, 20251.0t CO₂
KMFRMedford
KEULBoise
327 miles51m
View Details
Nov 22, 20250.6t CO₂
KGOOGrass Valley
NaN miles37m
View Details
Nov 21, 20252.6t CO₂
KMHVMojave
KBOIBoise
596 miles1h 49m
View Details
Nov 21, 20250.5t CO₂
KVNYVan Nuys
KMHVMojave
62 miles24m
View Details
Aug 13, 20250.5t CO₂
KTWFTwin Falls
KBOIBoise
116 miles20m
View Details
Jul 31, 20251.4t CO₂
KBILBillings
KBOIBoise
408 miles1h 5m
View Details
Jul 29, 20255.1t CO₂
KBILBillings
KBOIBoise
408 miles3h 15m
View Details
Jul 18, 20251.1t CO₂
KSLESalem
KBOIBoise
347 miles56m
View Details
Jun 26, 20254.1t CO₂
KTWFTwin Falls
KBOIBoise
116 miles2h 41m
View Details
May 2, 20250.6t CO₂
KPSCPasco
KBOIBoise
234 miles37m
View Details
Apr 30, 20250.5t CO₂
KTWFTwin Falls
KBOIBoise
116 miles20m
View Details
Apr 30, 20252.3t CO₂
KPSCPasco
KBOIBoise
234 miles1h 36m
View Details
Apr 29, 20251.7t CO₂
KTWFTwin Falls
KBOIBoise
116 miles1h 17m
View Details
Apr 17, 20250.5t CO₂
KJERJerome
KBOIBoise
107 miles18m
View Details
Mar 27, 20251.1t CO₂
KPDXPortland
KBOIBoise
342 miles55m
View Details
Mar 12, 20251.0t CO₂
KSLESalem
KBOIBoise
347 miles52m
View Details
Feb 22, 20251.9t CO₂
KBOIBoise
NaN miles1h 22m
View Details
Feb 22, 20253.8t CO₂
KMYFSan Diego
NaN miles2h 30m
View Details
Jan 8, 20253.5t CO₂
KPHXPhoenix
KBOIBoise
736 miles2h 17m
View Details
Jan 6, 20251.9t CO₂
KPHXPhoenix
NaN miles1h 24m
View Details
Top Airports by Emissions
Mojave

Mojave

KMHV

Total CO₂

20.7t

Total Visits

11

Avg CO₂/visit

1.9t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Boise

Boise

KBOI

Total CO₂

17.9t

Total Visits

8

Avg CO₂/visit

2.2t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Boise

Boise

KEUL

Total CO₂

17.8t

Total Visits

8

Avg CO₂/visit

2.2t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Billings

Billings

KBIL

Total CO₂

6.5t

Total Visits

2

Avg CO₂/visit

3.3t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Van Nuys

Van Nuys

KVNY

Total CO₂

5.3t

Total Visits

9

Avg CO₂/visit

0.6t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Ft Lauderdale

Ft Lauderdale

KFLL

Total CO₂

5.2t

Total Visits

1

Avg CO₂/visit

5.2t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Page 1 of 4
Top Routes by Emissions
Billings Boise

KBIL to KBOI408 miles

Total Flights

2

Avg CO₂/Flight

3.3t

Total Emissions

6.5t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Ft Lauderdale Tulsa

KFLL to KTUL1,162 miles

Total Flights

1

Avg CO₂/Flight

5.2t

Total Emissions

5.2t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Mojave Boise

KMHV to KBOI596 miles

Total Flights

2

Avg CO₂/Flight

2.6t

Total Emissions

5.1t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Boise Mojave

KEUL to KMHV599 miles

Total Flights

2

Avg CO₂/Flight

2.5t

Total Emissions

5t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Hutchinson Boise

KHUT to KEUL1,051 miles

Total Flights

1

Avg CO₂/Flight

4.7t

Total Emissions

4.7t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Burbank Kansas City

KBUR to KMCI1,351 miles

Total Flights

1

Avg CO₂/Flight

4.7t

Total Emissions

4.7t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Page 1 of 4