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On February 24, the FAA followed its counterparts in the other countries and issued an Emergency Airworthiness Directive (EAD) that required U.S. operators of airplanes equipped with certain Pratt & Whitney PW4000 engines to inspect these engines' fan blades with thermal acoustic imaging before further flight, [11] grounding the US fleet only ...
The Pratt & Whitney PW4000 is a family of dual-spool, axial-flow, high-bypass turbofan aircraft engines produced by Pratt & Whitney as the successor to the JT9D.It was first run in April 1984, was FAA certified in July 1986, and was introduced in June 1987.
In an airworthiness directive published on Friday, the FAA requires an ultrasonic inspection of the first- and second-stage high-pressure turbine disks within 30 days. ... Pratt & Whitney parent ...
The Pratt & Whitney PW1000G family, also marketed as the Pratt & Whitney GTF (geared turbofan), is a family of high-bypass geared turbofan engines produced by Pratt & Whitney. Following years of development and testing on various demonstrators, the program officially launched in 2008 with the PW1200G destined for the Mitsubishi SpaceJet (a ...
An emergency airworthiness directive (EAD) is an airworthiness directive issued when unsafe conditions require immediate action by an aircraft owner or operator. An EAD is published by a responsible authority such as the FOCA, EASA or FAA related to airworthiness and maintenance of aircraft and aircraft parts. It contains measures which must be ...
An airworthiness directive (commonly abbreviated as AD) is a notification to owners and operators of certified aircraft that a known safety deficiency with a particular model of aircraft, engine, avionics or other system exists and must be corrected. [1] [2]
An Airbus A321 from Iberia having its CFM56 changed. Aircraft maintenance is the performance of tasks required to ensure the continuing airworthiness of an aircraft or aircraft part, including overhaul, inspection, replacement, defect rectification, and the embodiment of modifications, compliance with airworthiness directives and repair.
While the earliest jet engines were sometimes unreliable, widespread use of later engines such as the Pratt & Whitney JT8D (e.g. McDonnell Douglas DC-9 and Boeing 737) led to major advances in reliability and safety. As jet engines started to deliver more power than piston engines while increasing reliability, aircraft whose size previously ...