An emergency Airworthiness Directive issued by Transport Canada yesterday calls for further inspection of Bombardier Q400 main landing gear (MLG) after line checks uncovered two cases of cam mechanism failure in the gear's alternate extension system (AES). The cam mechanism operates the cable to open the main landing gear door and releases the MLG uplock in sequence.
Aggressive cleaning of aircraft landing gear may shorten the life of landing gear components, according to Duncan Aviation accessory tech representative Jerry Cable. Water, dirt, debris and foreign objects can act as electrolytes, he said, “producing a corrosive environment,” and possibly leading to premature removal of components.
While focused on delivering geared turbofan (GTF) engines for the new Mitsubishi MRJ and Bombardier C Series, Pratt & Whitney is turning its attention to the wider applications of a technology that offers a 12- to 15-percent improvement in fuel burn by allowing the engine fan and low-pressure turbine to operate at optimum speeds.
West Star Aviation’s Grand Junction, Colo. facility (GJT) is offering 96-month detailed inspections and 120-month restorations for Challenger landing gear.
An FAA-operated King Air, N11, in late July landed gear up at Salt Lake City International Airport (SLC) after a gear malfunction. After taking off from SLC and raising the gear, the pilot noticed that the three green gear lights went out and the red gear transit light illuminated. He saw that the gear had not retracted and attempted to recycle it, but it failed to lock down.
Hawker Beechcraft King Air 200, Leonardtown, Md., Oct. 12, 2006–The NTSB said the King Air’s gear collapse on landing was caused by the airplane manufacturer’s inadequate landing-gear downlock plate maintenance orientation information, and the resulting disengagement of the main landing gear.
Four incidents of Citation VII main gear collapses during landing have prompted a proposed AD calling for operators to check for a possible wrong part. If the AD is adopted, the FAA would give affected operators six months to conduct a one-time inspection of the side-brace mechanism to detect the incorrect part. A mechanism found with the incorrect part number would have to be replaced with the correct part.
During a technical briefing held yesterday at Heli-Expo, Eurocopter encouraged EC 135 operators to keep a close eye on their helicopters’ main transmission gearbox. The European helicopter manufacturer, along with transmission supplier ZF Luftfahrttechnik of Flugplatzstrasse, Germany (Booth No. 4349), is taking a proactive approach to prevent spalling or tooth breakage of the input drive gears.
Piedmont Aviation Component Services recently added ATR 42 landing gear to its list of capabilities. Jennifer Giordano, Piedmont landing gear marketing manager, said, “Adding the ATR 42 to our landing-gear menu allows us to service additional equipment for our current customers as well as expand our customer base to include those flying the Dash 8-300.” The company also offers Dash 8-300 landing gear equipment for loan/exchange purposes.
Montreal-based Mecaer America (Booth No. 5319) has announced record growth for the fiscal year ending Sept. 30, 2007. The company–which saw revenues rise from $11 million to $19 million (Canadian)–specializes in design, development, manufacture and support of hydraulic and mechanical landing-gear systems, dampers, valves and power modules.