N551TH
Cessna Citation II
United States
PDX (Portland International Airport, Portland)

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Viewing period:
Compared to: preceding 12 months · Apr 2024 – Apr 2025
Apr 2025 – Mar 2026·vs Apr 2024 – Apr 2025

Emissions Overview

0.0
Tons CO2 This Month
Below Average0.0× avg for Citation II
9.1
Tons CO2 YTD
Typical0.9× avg for Citation II
59.5
CO2 Tons Since 2025
Typical0.9× avg for Citation II
Emissions Intensity0.01t CO₂/nmAbove Average1.8× avg for Citation II
59.5 tons CO2 in selected period

2026 pace: On track for approximately 36t CO₂ by year end · ↓ 28% vs full year 2025 (50t)

Flight Patterns & Behaviour

Activity broadly consistent with prior period — averaging 3.2t CO₂/month

3.2t
CO₂/month
0.8t
Avg per flight
11
Distinct routes
Moderately Concentrated3 routes account for 64% of total emissions
Highest emission route
Portland → Pasco
10.8t CO₂ total · 0.0038t 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
Prior data unavailable
Intensity
Prior data unavailable
New Routes
11
39t CO₂ combined
Dropped Routes
0
Avg per Flight
Prior data unavailable
Flight Count
Prior data unavailable

Route and airport counts may include data processing artefacts.

Spikes

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

CO₂ Above Baseline

23t

Signals Detected

5

Highest Severity

Medium

Aircraft
Medium
New28 Aug – 3 Sept 2025
Elevated activity period · 2 flights in 6 days vs baseline of 1
Contributed approximately 3t CO₂ to period total — 9% of period emissions
Aircraft
Medium
New24 Sept – 14 Oct 2025
Elevated activity period · 16 flights in 20 days vs baseline of 4
Contributed approximately 11t CO₂ to period total — 28% of period emissions
Aircraft
Medium
Historical7 Jun – 26 Jul 2025
49-day inactive period
2.8t CO₂ in the 7 days following resumption
Aircraft
Medium
Historical27 Jul – 31 Aug 2025
36-day inactive period
4.7t CO₂ in the 7 days following resumption
Aircraft
Medium
Historical19 Nov – 17 Dec 2025
28-day inactive period
1.3t CO₂ in the 7 days following resumption
Recent Flights
Feb 11, 20260.5t CO₂
KPAEEverett
KPDXPortland
161 miles36m
Feb 11, 20261.5t CO₂
KPDXPortland
KPAEEverett
161 miles1h 6m
Feb 4, 20260.7t CO₂
KPSCPasco
KPDXPortland
173 miles40m
Feb 4, 20260.5t CO₂
KPDXPortland
KPSCPasco
173 miles36m
View Details
Jan 14, 20260.8t CO₂
KPSCPasco
KPDXPortland
173 miles43m
View Details
Jan 14, 20260.5t CO₂
KPDXPortland
KPSCPasco
173 miles34m
View Details
Jan 7, 20260.6t CO₂
KPSCPasco
KPDXPortland
173 miles38m
View Details
Jan 7, 20260.5t CO₂
KPDXPortland
KPSCPasco
173 miles35m
View Details
Dec 17, 20250.7t CO₂
KPSCPasco
KPDXPortland
173 miles42m
View Details
Dec 17, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles34m
View Details
Nov 19, 20250.6t CO₂
KPSCPasco
KPDXPortland
173 miles38m
View Details
Nov 19, 20250.6t CO₂
KPDXPortland
KPSCPasco
173 miles39m
View Details
Nov 12, 20250.7t CO₂
KPSCPasco
KPDXPortland
173 miles41m
View Details
Nov 12, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles30m
View Details
Oct 29, 20250.7t CO₂
KPSCPasco
KPDXPortland
173 miles42m
View Details
Oct 29, 20250.6t CO₂
KPDXPortland
KPSCPasco
173 miles37m
View Details
Oct 22, 20250.8t CO₂
KPSCPasco
KPDXPortland
173 miles44m
View Details
Oct 22, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles33m
View Details
Oct 9, 20251.3t CO₂
KPDXPortland
KBOIBoise
342 miles59m
View Details
Oct 8, 20250.7t CO₂
KPSCPasco
KBOIBoise
234 miles42m
View Details
Oct 8, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles32m
View Details
Oct 8, 20250.7t CO₂
KPSCPasco
KPDXPortland
173 miles41m
View Details
Oct 7, 20250.7t CO₂
KPSCPasco
KBOIBoise
234 miles42m
View Details
Oct 7, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles36m
View Details
Oct 6, 20250.6t CO₂
KPSCPasco
KBOIBoise
234 miles38m
View Details
Oct 6, 20250.7t CO₂
KPDXPortland
KPSCPasco
173 miles42m
View Details
Oct 2, 20250.7t CO₂
KPSCPasco
KBOIBoise
234 miles42m
View Details
Oct 2, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles31m
View Details
Oct 1, 20250.9t CO₂
KPSCPasco
KBOIBoise
234 miles47m
View Details
Oct 1, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles31m
View Details
Sep 30, 20250.7t CO₂
KPSCPasco
KBOIBoise
234 miles40m
View Details
Sep 30, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles33m
View Details
Sep 24, 20250.5t CO₂
KPSCPasco
KPDXPortland
173 miles36m
View Details
Sep 24, 20250.7t CO₂
KPDXPortland
KPSCPasco
173 miles41m
View Details
Sep 17, 20250.5t CO₂
KPSCPasco
KPDXPortland
173 miles35m
View Details
Sep 17, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles35m
View Details
Sep 9, 20250.5t CO₂
KPSCPasco
KPDXPortland
173 miles33m
View Details
Sep 9, 20250.7t CO₂
KPDXPortland
KPSCPasco
173 miles40m
View Details
Sep 3, 20250.5t CO₂
KPSCPasco
KPDXPortland
173 miles34m
View Details
Sep 3, 20250.7t CO₂
KPDXPortland
KPSCPasco
173 miles42m
View Details
Sep 1, 20251.5t CO₂
KSMNSalmon
KPDXPortland
424 miles1h 6m
View Details
Aug 31, 20251.9t CO₂
KPSCPasco
KSHRSheridan
596 miles1h 20m
View Details
Jul 27, 20251.0t CO₂
KDLNDillon
KPSCPasco
324 miles51m
View Details
Jul 26, 20251.7t CO₂
KPSCPasco
KDUB
497 miles1h 14m
View Details
Jun 7, 20250.5t CO₂
KPDXPortland
KPSCPasco
173 miles35m
View Details
Jun 4, 20255.6t CO₂
KGLDGoodland
KPDXPortland
1,144 miles3h 19m
View Details
Top Airports by Emissions
Portland

Portland

KPDX

Total CO₂

29.6t

Total Visits

37

Avg CO₂/visit

0.8t

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

Pasco

KPSC

Total CO₂

28.2t

Total Visits

41

Avg CO₂/visit

0.7t

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

Goodland

KGLD

Total CO₂

5.6t

Total Visits

1

Avg CO₂/visit

5.6t

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

Boise

KBOI

Total CO₂

5.6t

Total Visits

7

Avg CO₂/visit

0.8t

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

Everett

KPAE

Total CO₂

2.0t

Total Visits

2

Avg CO₂/visit

1.0t

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

Sheridan

KSHR

Total CO₂

1.9t

Total Visits

1

Avg CO₂/visit

1.9t

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

KPDX to KPSC173 miles

Total Flights

19

Avg CO₂/Flight

0.6t

Total Emissions

10.8t CO₂

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

KPSC to KPDX173 miles

Total Flights

13

Avg CO₂/Flight

0.6t

Total Emissions

8.4t CO₂

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

KGLD to KPDX1,144 miles

Total Flights

1

Avg CO₂/Flight

5.6t

Total Emissions

5.6t CO₂

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

KPSC to KBOI234 miles

Total Flights

6

Avg CO₂/Flight

0.7t

Total Emissions

4.4t CO₂

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

KPSC to KSHR596 miles

Total Flights

1

Avg CO₂/Flight

1.9t

Total Emissions

1.9t CO₂

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

KPSC to KDUB498 miles

Total Flights

1

Avg CO₂/Flight

1.7t

Total Emissions

1.7t CO₂

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