N49U
Cessna Citation SII
United States
IAD (Washington Dulles International Airport, Washington)

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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

0.5
Tons CO2 This Month
Below Average0.1× avg for Citation SII
0.5
Tons CO2 YTD
Below Average0.0× avg for Citation SII
10.4
CO2 Tons Since 2025
Below Average0.2× avg for Citation SII
Emissions Intensity0.01t CO₂/nmTypical0.9× avg for Citation SII
6.5 tons CO2 in selected period

2026 pace: On track for approximately 2t CO₂ by year end · ↓ 80% vs full year 2025 (10t)

Flight Patterns & Behaviour

Activity broadly consistent with prior period — averaging 0.4t CO₂/month

0.4t
CO₂/month
0.7t
Avg per flight
5
Distinct routes
Highly Concentrated3 routes account for 78% of total emissions
Highest emission route
Manassas → Concord
1.7t CO₂ total · 0.0066t 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
26%
4t → 5t CO₂
Intensity
3%
0.0051 → 0.0049 t CO₂/nm
New Routes
5
5t CO₂ combined
Dropped Routes
4
Prior period only
Avg per Flight
28%
0.9t → 0.7t
Flight Count
3
4 → 7 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

7t

Signals Detected

4

Highest Severity

Medium

Emissions
Medium
New9 Oct 2025 · Manassas → Concord
Highest single-flight emission event (Manassas → Concord)
Single flight: 1.7t CO₂ — 35% of period emissions
Aircraft
Medium
New24 Apr – 8 May 2025
Elevated activity period · 2 flights in 14 days vs baseline of 1
Contributed approximately 1t CO₂ to period total — 22% of period emissions
Aircraft
Medium
New30 Sept – 6 Oct 2025
Elevated activity period · 1 flights in 6 days vs baseline of 0
Contributed approximately 1t CO₂ to period total — 11% of period emissions
Aircraft
Medium
Historical8 May – 6 Oct 2025
152-day inactive period
3.7t CO₂ in the 7 days following resumption
Recent Flights
Oct 9, 20250.5t CO₂
KJQFConcord
KLYHLynchburg
158 miles26m
Oct 9, 20251.7t CO₂
KHEFManassas
KJQFConcord
290 miles1h 15m
Oct 8, 20250.5t CO₂
KLYHLynchburg
KIADWashington
147 miles30m
Oct 8, 20250.5t CO₂
KIADWashington
KLYHLynchburg
147 miles30m
View Details
Oct 6, 20250.5t CO₂
KIADWashington
KLYHLynchburg
147 miles30m
View Details
May 8, 20250.5t CO₂
KBCBBlacksburg
KLYHLynchburg
67 miles17m
View Details
Apr 24, 20250.5t CO₂
KIADWashington
KLYHLynchburg
147 miles30m
View Details
Mar 9, 20250.5t CO₂
KBUYBurlington
KLYHLynchburg
90 miles19m
View Details
Mar 9, 20250.5t CO₂
KBCBBlacksburg
KBUYBurlington
95 miles21m
View Details
Jan 10, 20251.3t CO₂
KERIErie
KLYHLynchburg
332 miles1h 2m
View Details
Jan 10, 20251.4t CO₂
KLYHLynchburg
KERIErie
332 miles1h 7m
View Details
Top Airports by Emissions
Top Routes by Emissions
Manassas Concord

KHEF to KJQF290 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
Washington Lynchburg

KIAD to KLYH147 miles

Total Flights

3

Avg CO₂/Flight

0.5t

Total Emissions

1.5t CO₂

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

KJQF to KLYH158 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
Lynchburg Washington

KLYH to KIAD147 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
Blacksburg Lynchburg

KBCB to KLYH67 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
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