In recent years, concerns about aircraft safety have grown due to incidents ranging from runway collisions to mid-air explosions. Despite these worries, the reality remains that flying is statistically safer than traveling by car. Recent data shows that between 2003 and 2023, domestic airlines reported only 675 serious injuries, averaging about 32 per year. In stark contrast, over 47 million injuries occurred among vehicle occupants over the same timeframe, highlighting the relative safety of air travel.
In 2023, U.S. commercial airplanes covered over 773 billion miles, resulting in just 33 passenger injuries, equating to a mere 0.004 injuries per 100 million miles flown. This stands in sharp contrast to the alarming rate of 42.2 injuries per 100 million miles driven by vehicles. Such comparisons emphasize the effectiveness of safety measures in aviation, particularly those mandated by the Federal Aviation Administration (FAA).
One significant safety feature is the Engineered Materials Arresting System (EMAS), which plays a crucial role in preventing accidents at airports. If an aircraft overshoots a runway, EMAS can bring it to a rapid stop using a specialized lightweight material designed to absorb the plane's impact. EMAS is particularly effective, capable of halting aircraft traveling at speeds between 130 and 160 mph within seconds of touchdown.
The Functionality of EMAS
The EMAS works by utilizing crushable materials positioned at the end of the runway. The most widely used variant, known as EMASMAX, consists of collapsible cellular concrete blocks and is currently installed on 116 runways across 69 airports. A newer version, greenEMAS, employs silica foam made from recycled glass and is currently found on four runways at a single airport.
When an airplane traveling as fast as 80 mph encounters the EMAS, the weight of the aircraft causes its wheels to sink into the crushable material, effectively bringing it to a stop. This system acts similarly to a runaway truck ramp, designed to prevent accidents and safeguard lives. According to the FAA, EMAS has successfully stopped 25 aircraft, protecting 491 crew members and passengers in the process.
First introduced in 1996 at New York's JFK International Airport, EMAS is part of a broader initiative to improve runway safety. The FAA recognized in the 1980s that various obstacles, such as highways and dense urban areas, hindered the establishment of adequate runway safety areas (RSAs). To address this, engineered materials like EMAS were devised to provide additional safety measures where physical space was limited.
Runway Safety Areas and Regulations
Runway Safety Areas (RSAs) are critical zones that surround runways, extending between 250 and 500 feet on either side and 1,000 feet at both the beginning and end of the runway. When airports lack the necessary land to create these safety zones, the installation of EMAS becomes essential for ensuring the safety of both passengers and crew.
The introduction of EMAS has been a game-changer in aviation safety, significantly reducing the risk of accidents during landing and takeoff. As technology continues to advance, the aviation industry remains committed to enhancing safety measures, ensuring that flying remains one of the safest modes of transportation available.
Source: SlashGear News