Mechanical engineering

September 2, 2008 - 6:42am

The governor of Missouri has signed a bill eliminating sales tax on aircraft repair parts, aligning the state with neighboring states having similar laws. Before passing the law, Missouri exempted aircraft used to carry people and property, but now the tax exemption applies to all materials, replacement parts and equipment used for modification, repair, replacement and maintenance of aircraft, powerplants and accessories from Jan.

August 31, 2008 - 1:43pm

The FAA has issued a proposed Airworthiness Directive for GE CF34 turbofan engines with high-pressure-rotor, four-step, air-balance-piston, stationary seals to remove these seals and incorporate an eight-step seal at the next piece-part exposure.

August 8, 2008 - 9:55am

One of the most expensive consumable items on an aircraft is becoming less expensive to operate. Hydro-Aire, a part of Crane Aerospace & Electronics, has signed a licensing agreement with Dunlop Aerospace’s aviation braking systems division of Coventry, England, for braking system software designed to increase aircraft brake life significantly.

August 8, 2008 - 9:52am

I recently had the chance to fly one of the King Air C90s re-engined with two Walter M601E-11s, which are 751-shp engines flat rated to 550 shp for this installation. The airplane we were flying was N800RP, a 1974 King Air C90, S/N LJ-628. Dan Sigl, owner of Seagull Aviation, which is working on a conversion package for King Air 90s and 100s, agreed to bring the aircraft to my home base, Solberg Airport in New Jersey.

August 6, 2008 - 6:31am

The FAA last month approved upgraded flammability standards for thermal and acoustic insulation materials used in Part 25 (transport category) aircraft. Revised standards include new tests and criteria that address flame propagation and entry into the cabin of an external fire.

August 4, 2008 - 7:01am

Failure of the FAA to publish an advisory circular may prompt the National Air Transportation Association to request an extension of the October 6 implementation date for new repair station rules. The AC is intended to provide guidance for complying with the revised rules, particularly how contract maintenance is to be handled. “Our members need time to digest this,” the association claimed.

July 31, 2008 - 11:43am

Rolls-Royce unveiled a new turboprop engine for general aviation applications on Tuesday at EAA AirVenture in Oshkosh, Wis. The RR500 turboprop engine is larger than the turboshaft RR300 launched last year and will deliver 350 to 450 shp. Based on the RR300 core, the RR500 features a higher mass flow compressor and correspondingly matching turbine, as well as an exhaust-down configuration, a gearbox and propeller controls.

July 30, 2008 - 4:57am

China’s Xi’an Aircraft (XAC) staged a rollout ceremony on June 29 for an improved version of its 50- to 60-seat MA60 turboprop called the MA600. Scheduled to fly next month, the MA600 weighs some 650 pounds less than its predecessor and incorporates upgraded avionics and cabin enhancements, according to Chinese state-run media.

July 29, 2008 - 11:51am

Sikorsky’s Keystone Helicopter division is gearing up to produce both the S-76D and the S-92 at its Coatesville, Pa. Heliplex campus. The first S-76D is scheduled to fly by year-end, but Keystone’s president, David Ford, acknowledges, “That’s going to be a challenge.” Keystone has received three S-76D fuselages from Aero Vodochody and hopes to ship the first completed S-76D to Sikorsky’s West Palm Beach, Fla.

July 28, 2008 - 11:53am

A Superior Court of Arizona judge has dismissed a multimillion-dollar lawsuit against Cessna stemming from the crash of a 1980 Model 210 in October 2000 that killed the pilot and his wife. In rejecting the suit, the judge cited the General Aviation Revitalization Act (GARA) of 1994, which protects general aviation manufacturers from most product-liability claims involving airplanes more than 18 years old.

 
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