Moneycontrol
Last Updated : Mar 23, 2018 10:03 AM IST | Source: Moneycontrol.com

IndiGo Airlines controversy: Everything you need to know about Airbus A320neo & the fault in its stars

Moneycontrol News @moneycontrolcom
The centre of debate in the current controversy where IndiGo Airlines has had to ground a number of flights is the faulty engine of the Airbus A320neo plane. As many as 406 flights have been cancelled by the company between March 16 and today until March 31. The flights have been grounded for safety reasons and faults found on A320neo planes’ engines. According to reports, IndiGo has lost Rs 3912 crore in the market since the A320neo engine crisis sprung up. Here’s everything you need to know about the Airbus A320neo plane and the IndiGo Airlines controversy. (Picture source: Airbus)
1/5

The centre of debate in the current controversy where IndiGo Airlines has had to ground a number of flights is the faulty engine of the Airbus A320neo plane. As many as 406 flights have been cancelled by the company between March 16 and today until March 31. The flights have been grounded for safety reasons and faults found on A320neo planes’ engines. According to reports, IndiGo has lost Rs 3912 crore in the market since the A320neo engine crisis sprung up. Here’s everything you need to know about the Airbus A320neo plane and the IndiGo Airlines controversy. (Picture source: Airbus)

The Airbus A320neo | The A320neo jet belongs to the larger A320 family that also includes A319neo, A321neo, A318, A319, A320 and A321. The suffix neo in A320neo stands for New Engine Option. An A320neo jet costs around USD 110m but the buyers place bulk booking orders years ahead to get discounts. As per Airbus, the A320neo is more in service than any other airliner and it enjoys a 60% market share. (Picture source: Wikimedia Commons)
2/5

The Airbus A320neo | The A320neo jet belongs to the larger A320 family that also includes A319neo, A321neo, A318, A319, A320 and A321. The suffix neo in A320neo stands for New Engine Option. An A320neo jet costs around USD 110m but the buyers place bulk booking orders years ahead to get discounts. As per Airbus, the A320neo is more in service than any other airliner and it enjoys a 60% market share. (Picture source: Wikimedia Commons)

Why is it so popular? | Primarily for its fuel efficiency. Air Transport Fuel expenditure makes the bulk of any airline's costs and to push their bottomlines higher, airlines, especially in countries like India and China opt for economical narrow-body jets. Additionally, as per Airbus, the A320neo Family will offer up to 20 percent savings in fuel burn per seat by 2020, two tonnes of additional payload, 500 nautical miles of more range, lower operating costs, along with a nearly 50 percent reduction in engine noise and NOx emissions 50 percent below the industry standard. In 2015, IndiGo airlines ordered 250 Airbus A320neo jets. (Source: Wikimedia Commons)
3/5

Why is it so popular? | Primarily for its fuel efficiency. Air Transport Fuel expenditure makes the bulk of any airline's costs and to push their bottomlines higher, airlines, especially in countries like India and China opt for economical narrow-body jets. Additionally, as per Airbus, the A320neo Family will offer up to 20 percent savings in fuel burn per seat by 2020, two tonnes of additional payload, 500 nautical miles of more range, lower operating costs, along with a nearly 50 percent reduction in engine noise and NOx emissions 50 percent below the industry standard. In 2015, IndiGo airlines ordered 250 Airbus A320neo jets. (Source: Wikimedia Commons)

The engine of worries | The baseline A320neo jetliner has a choice of two new-generation engines (the PurePower PW1100G-JM from Pratt and Whitney and the LEAP-1A from CFM International). European Aviation Safety Agency (EASA) issued emergency airworthiness directive for A320neos fitted with PW1100 engines (from serial number 450 and beyond) because of aborted take-off & in-flight shut down of these engines. DGCA then ordered grounding of A320neo jets with faulty Pratt & Whitney engines after the EASA directive. Currently, eight of IndiGo’s 32 A320neo jets have been grounded. (Pictured: PurePower PW1100G-JM | Picture source: Wikimedia Commons)
4/5

The engine of worries | The baseline A320neo jetliner has a choice of two new-generation engines (the PurePower PW1100G-JM from Pratt and Whitney and the LEAP-1A from CFM International). European Aviation Safety Agency (EASA) issued emergency airworthiness directive for A320neos fitted with PW1100 engines (from serial number 450 and beyond) because of aborted take-off & in-flight shut down of these engines. DGCA then ordered grounding of A320neo jets with faulty Pratt & Whitney engines after the EASA directive. Currently, eight of IndiGo’s 32 A320neo jets have been grounded. (Pictured: PurePower PW1100G-JM | Picture source: Wikimedia Commons)

The tech behind the headwinds | As per a communication from Pratt & Whitney, the issue is with the knife-edge seal in the High-Pressure Compressor aft hub on the PW1100G-JM engine. Knife-edge sealing technique forms reliable, vacuum-tight bonds between materials having very different thermal-expansion characteristics, such as ceramic and Monel (or equivalent alloys). These knife-edge seals expected to withstand to extremely high temperatures and mechanical loads to which gas turbine engine components are increasingly subjected to. Oil seal and combustor in Pratt & Whitney engines are wearing out faster than expected. Pratt & Whitney has said that it will replace all the faulty engines within 40 days. (Picture source: Reuters)
5/5

The tech behind the headwinds | As per a communication from Pratt & Whitney, the issue is with the knife-edge seal in the High-Pressure Compressor aft hub on the PW1100G-JM engine. Knife-edge sealing technique forms reliable, vacuum-tight bonds between materials having very different thermal-expansion characteristics, such as ceramic and Monel (or equivalent alloys). These knife-edge seals expected to withstand to extremely high temperatures and mechanical loads to which gas turbine engine components are increasingly subjected to. Oil seal and combustor in Pratt & Whitney engines are wearing out faster than expected. Pratt & Whitney has said that it will replace all the faulty engines within 40 days. (Picture source: Reuters)

First Published on Mar 21, 2018 07:10 pm
Loading...
Sections
Follow us on
Available On