N121LJ
Bombardier Learjet 31
Charter
United States
LNN (Willoughby Lost Nation Municipal Airport, Willoughby)

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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 increasing vs prior period

Emissions Overview

0.0
Tons CO2 This Month
Below Average0.0× avg for Learjet 31
0.0
Tons CO2 YTD
Below Average0.0× avg for Learjet 31
17.2
CO2 Tons Since 2025
Below Average0.2× avg for Learjet 31
Emissions Intensity0.01t CO₂/nmTypical1.3× avg for Learjet 31
12.2 tons CO2 in selected period

Flight Patterns & Behaviour

Emissions up 140% vs prior period, driven by Raleigh/Durham → Rochester

11t
Period total CO₂
1.3t
Avg per flight
8
Flights
Highly Concentrated3 routes account for 77% of total emissions
Highest emission route
Raleigh/Durham → Rochester
4.4t CO₂ total · 0.0100t CO₂/nm
🇺🇸United States·16202 aircraft tracked·Ranked 1st by emissions among 109 countries·0.0× country averageBelow Average

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

What's ChangedCompared to prior equivalent period
Emissions
140%
4t → 11t CO₂
Intensity
44%
0.0037 → 0.0053 t CO₂/nm
New Routes
7
11t CO₂ combined
Dropped Routes
4
Prior period only
Avg per Flight
20%
1.1t → 1.3t
Flight Count
4
4 → 8 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

10t

Signals Detected

5

Highest Severity

High

Emissions
High
New14 Jul 2025 · Raleigh/Durham → Rochester
Highest single-flight emission event (Raleigh/Durham → Rochester)
Single flight: 4.4t CO₂ — 41% of period emissions
Aircraft
Medium
New30 Apr – 6 May 2025
Elevated activity period · 2 flights in 6 days vs baseline of 1
Contributed approximately 2t CO₂ to period total — 15% of period emissions
Aircraft
Medium
New15 Jun – 4 Jul 2025
Elevated activity period · 2 flights in 19 days vs baseline of 2
Contributed approximately 2t CO₂ to period total — 16% of period emissions
Aircraft
Medium
Historical30 Apr – 20 Jun 2025
52-day inactive period
1.7t CO₂ in the 7 days following resumption
Avg Emissions
Medium
New14 Jul 2025 · Rochester → Penn Yan
1 flight recorded with anomalous emissions intensity
0.5t CO₂ total — 5% of period emissions
Recent Flights
Jul 14, 20250.5t CO₂
KROCRochester
KPEOPenn Yan
45 miles13m
Jul 14, 20254.4t CO₂
KRDURaleigh/Durham
KROCRochester
503 miles2h 49m
Jul 4, 20250.8t CO₂
KOSUColumbus
KELMElmira/Corning
352 miles45m
Jul 4, 20251.6t CO₂
KPNEPhiladelphia
KCMHColumbus
416 miles1h 13m
View Details
Jun 21, 20250.5t CO₂
KLNNWilloughby
KHTF
197 miles28m
View Details
Jun 20, 20251.1t CO₂
KIADWashington
KBKLCleveland
285 miles55m
View Details
Apr 30, 20250.5t CO₂
KLNNWilloughby
KELMElmira/Corning
234 miles35m
View Details
Apr 30, 20251.1t CO₂
KIADWashington
KBKLCleveland
285 miles53m
View Details
Feb 26, 20250.5t CO₂
KBKLCleveland
KELMElmira/Corning
250 miles31m
View Details
Feb 26, 20250.5t CO₂
KCMHColumbus
KBKLCleveland
122 miles25m
View Details
Feb 26, 20251.8t CO₂
KSTPSaint Paul
KCMHColumbus
620 miles1h 19m
View Details
Jan 30, 20251.6t CO₂
KELMElmira/Corning
KSGHSpringfield
396 miles1h 10m
View Details
Top Airports by Emissions
Rochester

Rochester

KROC

Total CO₂

4.9t

Total Visits

2

Avg CO₂/visit

2.5t

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Raleigh/Durham

Raleigh/Durham

KRDU

Total CO₂

4.4t

Total Visits

1

Avg CO₂/visit

4.4t

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

Washington

KIAD

Total CO₂

2.2t

Total Visits

2

Avg CO₂/visit

1.1t

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

Cleveland

KBKL

Total CO₂

2.2t

Total Visits

2

Avg CO₂/visit

1.1t

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

Philadelphia

KPNE

Total CO₂

1.6t

Total Visits

1

Avg CO₂/visit

1.6t

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

Columbus

KCMH

Total CO₂

1.6t

Total Visits

1

Avg CO₂/visit

1.6t

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Page 1 of 2
Top Routes by Emissions
Raleigh/Durham Rochester

KRDU to KROC504 miles

Total Flights

1

Avg CO₂/Flight

4.4t

Total Emissions

4.4t CO₂

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

KIAD to KBKL285 miles

Total Flights

2

Avg CO₂/Flight

1.1t

Total Emissions

2.2t CO₂

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

KPNE to KCMH416 miles

Total Flights

1

Avg CO₂/Flight

1.6t

Total Emissions

1.6t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Columbus Elmira/Corning

KOSU to KELM352 miles

Total Flights

1

Avg CO₂/Flight

0.8t

Total Emissions

0.8t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Rochester Penn Yan

KROC to KPEO45 miles

Total Flights

1

Avg CO₂/Flight

0.5t

Total Emissions

0.5t CO₂

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

KLNN to KHTF197 miles

Total Flights

1

Avg CO₂/Flight

0.5t

Total Emissions

0.5t CO₂

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