High temperature reduces lifting power and an aircraft can’t reach a very high FL.
An aircraft speed reduces as well and an aircraft can get to the destination with delays.
It is dangerous because an aircraft needs more time to take off so the length of the RW is not enough and the aircraft might roll off the RW. Moreover lifting power reduces due to low air pressure so engines have to work harder and it might cause overheating.
Low temperature increases lifting power and an aircraft can reach a higher FL. Aircraft speed increases as well and an aircraft can get to the destination quicker.
Very low temperature (– 60°) can cause low fuel temperature. It is quite dangerous for flight at FL and a controller has to give instructions to descent to a lower FL.
It is good as lifting power is enough for an aircraft to take off/land quicker. Lifting power increases so an aircraft can take much load.
NB!If temperature changes from 0° to -10° it might cause icing of an aircraft. So an aircraft needs de-icing.
Low temperature (-30) can seriously reduce visibility.
NB! Take off can be cancelled if temperature is more than +50°C or -50°C.
11. Read the text and answer the following questions. You can use your own experience.
1. What might the reason for icing be?
2. At what stages of flight can icing be dangerous for flight?
3. What are possible consequences of icing?
4. What measures can be taken to prevent ice formation?
5. Can you describe any aviation event where icing was involved?
Temperature can influence safe flying greatly. Changeable temperature (from 0° to -10°) might cause icing of an aircraft and the RW. Icing and icy conditions often lead to airline accidents. Icing of wings is a common problem for an aircraft. It might be very dangerous as even a small amount of ice or frost can greatly reduce lifting power and result in some problems
during take off. If ice builds up during flight the consequences can be catastrophic, that is why aircraft are de-iced before take off. Modern planes are designed to prevent ice buildup on wings, engines and tail. What is more, pilots can have special ice detectors in order to avoid icy areas.