Carbon Sky Index | N551HA GV — Emissions Profile

N551HA

•

Gulfstream GV

United States

PHIK (Hickam Field, Honolulu)

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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 decreasing vs prior period

Emissions Overview

5.1

Tons CO₂ This Month

Below Average0.2× avg for GV

5.1

Tons CO₂ YTD

Below Average0.1× avg for GV

64.5

CO₂ Tons Since 2025

Below Average0.1× avg for GV

Emissions Intensity0.01t CO₂/nmTypical1.1× avg for GV

14.6 tons CO₂ in selected period

2026 pace: On track for approximately 20t CO₂ by year end · ↓ 66% vs full year 2025 (59t)

Flight Patterns & Behaviour

Emissions down 73% vs prior period — significantly less active

13t

Period total CO₂

4.4t

Avg per flight

Flights

Highly Concentrated2 routes account for 100% of total emissions

Highest emission route

Santa Maria → Tulsa

9.5t CO₂ total · 0.0079t CO₂/nm

Seasonal pattern: Historically peaks in March · Current month is 92% below March 2025

🇺🇸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

↓ 73%

49t → 13t CO₂

Intensity

↓ 24%

0.0112 → 0.0085 t CO₂/nm

New Routes

13t CO₂ combined

Dropped Routes

↓ 2

Prior period only

Avg per Flight

↓ 55%

9.8t → 4.4t

Flight Count

↓ 2

5 → 3 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

13t

Signals Detected

Highest Severity

High

Emissions

High

New13 Dec 2025 · Santa Maria → Tulsa

Highest single-flight emission event (Santa Maria → Tulsa)

Single flight: 9.5t CO₂ — 72% of period emissions

Aircraft

Medium

Historical13 Dec 2025 – 21 Mar 2026

98-day inactive period

3.8t CO₂ in the 7 days following resumption

Recent Flights

Mar 23, 20261.9t CO₂

YPEDAdelaide

YRYK

210 miles28m

View Details

Mar 21, 20261.9t CO₂

YPEDAdelaide

YRYK

210 miles27m

View Details

Dec 13, 20259.5t CO₂

KSMXSanta Maria

KTULTulsa

1,380 miles2h 41m

View Details

Mar 27, 202523.0t CO₂

PHIKHonolulu

KTULTulsa

3,828 miles6h 25m

View Details

Mar 25, 20252.7t CO₂

PHIKHonolulu

NaN miles49m

View Details

Mar 22, 20253.4t CO₂

PHIKHonolulu

NaN miles1h 0m

View Details

Mar 7, 20256.9t CO₂

KVCVVictorville

KTULTulsa

1,212 miles1h 59m

View Details

Mar 7, 202512.9t CO₂

KTULTulsa

NaN miles3h 37m

View Details

Top Airports by Emissions

Santa Maria

KSMX

Total CO₂

9.5t

Total Visits

Avg CO₂/visit

9.5t

KTUL

Total CO₂

9.5t

Total Visits

Avg CO₂/visit

9.5t

YPED

Total CO₂

3.8t

Total Visits

Avg CO₂/visit

1.9t

Total CO₂

3.8t

Total Visits

Avg CO₂/visit

1.9t

Top Routes by Emissions

Santa Maria Tulsa

KSMX to KTUL• 1,380 miles

Total Flights

Avg CO₂/Flight

9.5t

Total Emissions

9.5t CO₂

YPED to YRYK• 211 miles

Total Flights

Avg CO₂/Flight

1.9t

Total Emissions

3.8t CO₂

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