Operators of about 1,100 Honeywell TFE731-2, -3 and -4 engines have until December 31 next year to replace fan rotor discs with improved ones under a new Airworthiness Directive (2001-23-09). The AD supersedes two previous directives that required the removal of certain older discs and established life limits on that disc series. Estimated cost for parts is $20,400 per engine.
Technofan is demonstrating its new cooling fans here at the Paris Air Show (Hall 2B Stand D13). The Safran group subsidiary’s design engineers are working to further improve ventilation systems for passenger cabins, avionics bays and wheel brakes. On the new A380 airliner, for instance, a series of innovations is already making cooling fans smarter.
An extended brake service life of up to 40 percent is offered to ATR 72 operators as a result of close collaboration between Dunlop Aerospace Braking Systems (DABS) and Avions de Transport Regional in Toulouse.
Meggitt (Stand A536) is introducing a number of products, including new developments in engine monitoring equipment revealed by its Vibro-Meter subsidiary. Fitted on the Boeing 737, for example, the new vibration monitors continuously check specific engine bearings and detect unusual signatures using advanced signal processing.
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