N621KM
Cessna Citation SII
United States
APA (Arapahoe County Airport, Denver)

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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

25.3
Tons CO2 This Month
Above Average5.9× avg for Citation SII
30.0
Tons CO2 YTD
Above Average2.7× avg for Citation SII
67.3
CO2 Tons Since 2025
Typical1.1× avg for Citation SII
Emissions Intensity0.02t CO₂/nmAbove Average1.9× avg for Citation SII
51.5 tons CO2 in selected period

2026 pace: On track for approximately 90t CO₂ by year end · ↑ 141% vs full year 2025 (37t)

Flight Patterns & Behaviour

Emissions up 192% vs prior period, driven by Denver → Morrilton

42t
Period total CO₂
2.2t
Avg per flight
19
Flights
Moderately Concentrated3 routes account for 58% of total emissions
Highest emission route
Denver → Morrilton
11.6t CO₂ total · 0.0037t 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
192%
14t → 42t CO₂
Intensity
8%
0.0038 → 0.0041 t CO₂/nm
New Routes
11
33t CO₂ combined
Dropped Routes
2
Prior period only
Avg per Flight
8%
2.4t → 2.2t
Flight Count
13
6 → 19 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

21t

Signals Detected

5

Highest Severity

Medium

Aircraft
Medium
New6 May – 12 May 2025
Elevated activity period · 1 flights in 6 days vs baseline of 0
Contributed approximately 2t CO₂ to period total — 6% of period emissions
Aircraft
Medium
New29 Sept – 2 Nov 2025
Elevated activity period · 4 flights in 34 days vs baseline of 2
Contributed approximately 9t CO₂ to period total — 22% of period emissions
Aircraft
Medium
Historical6 May – 10 Aug 2025
97-day inactive period
2.7t CO₂ in the 7 days following resumption
Aircraft
Medium
Historical10 Aug – 5 Oct 2025
56-day inactive period
2.4t CO₂ in the 7 days following resumption
Aircraft
Medium
Historical29 Oct – 23 Dec 2025
55-day inactive period
4.9t CO₂ in the 7 days following resumption
Recent Flights
Mar 18, 20262.0t CO₂
KAUSAustin
KCXWConway
446 miles1h 28m
Mar 11, 20261.5t CO₂
KAUSAustin
KMPJMorrilton
439 miles1h 11m
Mar 11, 20262.1t CO₂
KCXWConway
KAUSAustin
446 miles1h 29m
Mar 11, 20262.2t CO₂
KJWNNashville
KCXWConway
328 miles1h 32m
View Details
Mar 11, 20263.6t CO₂
KFLLFt Lauderdale
KJWNNashville
803 miles2h 22m
View Details
Mar 6, 20263.6t CO₂
KRBMJacksonville
KFLLFt Lauderdale
942 miles2h 23m
View Details
Mar 6, 20262.9t CO₂
KAPADenver
KCXWConway
744 miles1h 58m
View Details
Feb 26, 20260.7t CO₂
KGHMCenterville
KTRIBlountville
284 miles43m
View Details
Jan 19, 20262.1t CO₂
KAPADenver
KMPJMorrilton
722 miles1h 29m
View Details
Jan 4, 20262.1t CO₂
KAPADenver
KRUE
709 miles1h 31m
View Details
Dec 26, 20252.2t CO₂
KAPADenver
KRUE
709 miles1h 34m
View Details
Dec 23, 20251.3t CO₂
KLNKLincoln
KCWSJacksonville
463 miles1h 1m
View Details
Dec 23, 20251.4t CO₂
KAPADenver
KLNKLincoln
436 miles1h 5m
View Details
Oct 29, 20252.2t CO₂
KAPADenver
KMPJMorrilton
722 miles1h 35m
View Details
Oct 26, 20252.3t CO₂
KAPADenver
KRUE
709 miles1h 39m
View Details
Oct 13, 20252.3t CO₂
KAPADenver
KMPJMorrilton
722 miles1h 38m
View Details
Oct 5, 20252.4t CO₂
KAPADenver
KRUE
709 miles1h 39m
View Details
Aug 10, 20252.7t CO₂
KAPADenver
KMPJMorrilton
722 miles1h 52m
View Details
May 6, 20252.3t CO₂
KAPADenver
KMPJMorrilton
722 miles1h 38m
View Details
Apr 27, 20252.2t CO₂
KAPADenver
KRUE
709 miles1h 34m
View Details
Apr 17, 20252.2t CO₂
KAPADenver
KRUE
709 miles1h 34m
View Details
Mar 26, 20252.2t CO₂
KAPADenver
KRUE
709 miles1h 33m
View Details
Mar 23, 20252.0t CO₂
KAPADenver
KRUE
709 miles1h 28m
View Details
Mar 16, 20251.5t CO₂
KEDCPflugerville
KHOTHot Springs
384 miles1h 11m
View Details
Jan 10, 20254.2t CO₂
KIXDNew Century
KFMYFort Myers
1,132 miles2h 44m
View Details
Top Airports by Emissions
Denver

Denver

KAPA

Total CO₂

25.0t

Total Visits

11

Avg CO₂/visit

2.3t

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

Morrilton

KMPJ

Total CO₂

13.2t

Total Visits

6

Avg CO₂/visit

2.2t

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

Conway

KCXW

Total CO₂

9.2t

Total Visits

4

Avg CO₂/visit

2.3t

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

KRUE

Total CO₂

9.0t

Total Visits

4

Avg CO₂/visit

2.3t

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

Ft Lauderdale

KFLL

Total CO₂

7.2t

Total Visits

2

Avg CO₂/visit

3.6t

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

Nashville

KJWN

Total CO₂

5.7t

Total Visits

2

Avg CO₂/visit

2.9t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Page 1 of 2
Top Routes by Emissions
Denver Morrilton

KAPA to KMPJ723 miles

Total Flights

5

Avg CO₂/Flight

2.3t

Total Emissions

11.6t CO₂

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

KAPA to KRUE710 miles

Total Flights

4

Avg CO₂/Flight

2.3t

Total Emissions

9t CO₂

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

KRBM to KFLL943 miles

Total Flights

1

Avg CO₂/Flight

3.6t

Total Emissions

3.6t CO₂

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

KFLL to KJWN803 miles

Total Flights

1

Avg CO₂/Flight

3.6t

Total Emissions

3.6t CO₂

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

KAPA to KCXW744 miles

Total Flights

1

Avg CO₂/Flight

2.9t

Total Emissions

2.9t CO₂

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

KJWN to KCXW328 miles

Total Flights

1

Avg CO₂/Flight

2.2t

Total Emissions

2.2t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Page 1 of 2