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An air cycle machine (ACM) is the refrigeration unit of the environmental control system (ECS) used in pressurized gas turbine-powered aircraft. Normally an aircraft has two or three of these ACM. Each ACM and its components are often referred as an air conditioning pack.
The aircraft involved was an Airbus A320-214, [23] built by Airbus Industrie in 2004, with registration AP-BLD and MSN 2274, and owned by GE Capital Aviation Services (GECAS). [24] [8] The plane was powered by two CFM International CFM56-5B4/P engines, [25] [24] which were most recently installed in February and May 2019. [18]
PIA Boeing 707C operating Cargo aircraft taxiing at Charles de Gaulle Airport, France on 14 August 1994. PIA operates a cargo delivery system within Pakistan. PIA Cargo transports goods across Pakistan as well as to international destinations. These goods include meat and vegetables, textiles, paper products, laboratory equipment and postal mail.
The aircraft involved was a nine-year-old Boeing 707-340C with serial number 20275 and line number 844. It was manufactured in 1970 and first flew on July 30. Ten days later, on 10 August, it was delivered to Pakistan International Airlines (PIA) and was registered as AP-AWB. It was re-registered as AP-AWZ in 1972 after being leased for several ...
The part of the bleed air that is directed to the ECS is then expanded to bring it to cabin pressure, which cools it. A final, suitable temperature is then achieved by adding back heat from the hot compressed air via a heat exchanger and air cycle machine known as a PAC (Pressurization and Air Conditioning) system. In some larger airliners, hot ...
The aircraft was a Fokker F27-200 Friendship turboprop airliner, serial number 10207, built in 1962 and registered as AP-BBF. [3] It had accumulated approximately 44,524 hours of flying time; and 41,524 cycles (the number of times the aircraft had been pressurized ) at the time of the accident.
Pakistan International Airlines Corporation, commonly known as Pakistan International Airlines or PIA, is the flag carrier airline of Pakistan. The airline has its head office on the grounds of Jinnah International Airport in Karachi. [1] [2] Its main bases are Karachi, Lahore and Islamabad/Rawalpindi.
All modern air conditioning systems, even small window package units, are equipped with internal air filters. [citation needed] These are generally of a lightweight gauze-like material, and must be replaced or washed as conditions warrant. For example, a building in a high dust environment, or a home with furry pets, will need to have the ...