EVA Air's main sources of air pollutant emissions are aircraft, followed by ground vehicles. Aircraft are regularly serviced and maintained, in accordance with the original manufacturers’ recommendations; ground vehicle exhaust is regularly tested, in accordance with environmental protection regulations. By doing so, we ensure that emissions meet national standards and assure the absence of serious environmental impacts. In addition, we estimate total emission of nitrogen oxides (NOx), carbon monoxide (CO), hydrocarbons (HC) and sulfur oxides (SOx) from aircraft during take-off and landing, to quantify these emissions and respond to future regulatory changes.
In order to comply with noise control regulations around airports and provide a peaceful living environment for communities, the International Civil Aviation Organization (ICAO) and the US Federal Aviation Regulations (FAR) have established strict validation standards for aircraft noise levels at the time of manufacture. The noise standards for our entire fleet at EVA Air comply with the ICAO and FAR level 4 specifications. We strictly adhere to designated noise control procedures at each airport during aircraft operations, minimizing the impact of noise on the surrounding airport environment.
Aircraft Air Pollution Data in LTO cycle
| |
|
Unit |
2020 |
2021 |
2022 |
2023 |
| Nitrogen oxide (NOx) |
Total emissions |
Tonne |
1,825 |
1,810 |
1,970 |
2,670 |
| Passenger transport emission intensity |
g /RPK |
0.1341 |
0.8232 |
0.0548 |
0.0428 |
| Cargo transport emission intensity |
g /FTK |
0.1000 |
0.0958 |
0.2650 |
0.1249 |
| Hydrocarbon (HC) |
Total emissions |
Tonne |
129 |
125 |
131 |
186 |
| Carbon monoxide (CO) |
Total emissions |
Tonne |
1,032 |
1,005 |
1,089 |
1,499 |
| Sulfur oxides (SOx) |
Total emissions |
Tonne |
32 |
29 |
31 |
50 |
Note 1: Each air pollutant is converted by the simple calculation method of ICAO Airport Air Quality Manual according to the emission factor of each aircraft type in one Landing-Take Off Cycle (LTO).
Note 2: During the pandemic, as we implemented Cabin In Cargo (CIC) operations, the annual emission data was adjusted to account for the emissions of these flights under the cargo category.
Note 3: The different aircraft models’ certified engine emissions data are referred to the ICAO Aircraft Engine Emissions Databank. Sulfur oxides (SOx) emissions are estimated using the conversion factor of 0.000891 tons/LTO recommended by the US Environmental Protection Agency. |
