Total Landing and Takeoff Cycle (LTO) emissions from aircrafts at SSH for year 2013 were estimated as 442.047 t /y for HC, 37660.742 t /y for CO, 69340.331 t /y for NO_X, and 9.674 t /y for PM. The predicted total LTO emissions from aircrafts at Sharm El-Sheikh International airport(SSH) for the year 2050 were calculated as 4928.8241 t /y for HC, 419917.27 t /y for CO, 773144.69 t /y for NO_X, and 107.8651 t /y for PM. The aircrafts at SSH are the major sources of NOx emissions (99.95%), Boeing 777 (large aircraft) has the biggest portions in NOx total emissions, in which contributing 6.836t /LTO for NO_X. Flight numbers are expected to reach 483822 by 2050. The emissions concentrations at SSH are below the air quality limit values given in Law No. (4/1994) of Egypt and its amendment. The assumption of using  biodiesel (Soy biodiesel B₂₀) for aircraft engines at SSH for year 2013 leads to the substantial reduction in PM, HC and CO emissions 0.987 t/ year, 93.272 t/ year, and 4142.682 t/ year, respectively accompanying with the increase in NOx emission 1386.806 t/ year. Moreover, the prediction of reduction in emissions for year 2050 are estimated as 11.00505 t/ year for PM, 1039.9828 t/ year for HC, and 46190.9043 t/ year for CO, accompanying with the increase in NOx emission 15462.8869 t/ year. There are very little effect on emissions reduction when using biodiesel (Soy biodiesel B₂₀) for APU & aircraft handling comparing with aircraft main engines. The measurement of average concentration of the regulated air emissions (HC, NOx, CO) at distance away 8 km from Runway were estimated for using Diesel (Jet A1) as 0.8281 µg/m³ for HC, and 4.617 µg/m³ for CO, and 343.7607 µg/m³ for NOx, while for The assumption of using biodiesel (Soy biodiesel B₂₀) for aircraft engines as 0.6534 µg/m³ for HC, and 4.1091 µg/m³ for CO, and 350.6359 µg/m³ for NOx.
Keywords: Biodiesel; Aircraft; Air quality: air pollution; Airport