Atmospheric sciences

March 22, 2007 - 6:19am

A new NASA study claims that man-made cirrus clouds formed by commercial jet engine exhaust might be responsible for increased surface temperatures detected in the U.S. between 1975 and 1994.

Climate data shows that cirrus cloud cover over the U.S. has increased by 1 percent per decade, and the report says the rise is likely due to commercial air traffic.

February 1, 2007 - 10:24am

Operators of all U.S.-registered Challenger 600s, 601s and 604s and Canadair Regional Jets, which are derived from the business jet, must incorporate flight manual revisions to ensure that before takeoff the “wing leading edge and upper wing surface are completely free of ice, frost, snow or slush,” under a new AD. The FAA directive (AD 2005-04-07) followed an identical AD from Transport Canada.

January 31, 2007 - 10:51am

Bell 206B3, Atlantic City, Wyo., Aug. 23, 2004–The Hawkins and Powers Aviation pilot was filming and had completed a “high groundspeed” pass when he encountered what he called wind shear and a “15- to 20-knot tailwind” while maneuvering close to the ground. The helicopter did not respond to control inputs and crashed, rolling over, crushing the forward fuselage and substantially damaging the helicopter.

January 31, 2007 - 9:25am

CESSNA 208, PARKS, ARIZ., NOV. 8, 2002–At approximately 10:20 a.m. (MST) a Cessna 208B (N514DB), operated by Brown County Financial Services, LLC, of Snyder, Texas, was destroyed when it crashed approximately three miles south of Parks, Ariz., about 16 nm northwest of Flagstaff. The commercial pilot, a private-pilot-rated passenger and two other passengers were killed.

January 31, 2007 - 5:35am

NASA researchers are seeking to bring better weather information to pilots and controllers by converting a fleet of regional turboprop airliners for service as flying weather reporting stations.

January 29, 2007 - 10:03am
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Researchers from the U.S., Canada, Britain and France are participating in a major aircraft icing study taking place this winter primarily in the Montreal area. Canada’s National Research Council is leading the Alliance Icing Research Study with its Convair CV-580 in partnership with NASA’s DHC-6 Twin Otter.

January 29, 2007 - 6:47am

Archie Trammell, former magazine editor turned radar and convective weather expert, has added a bimonthly online magazine to supplement his long-running radar seminars. The new publication, at www.radar4pilots.com, contains references to weather research studies and articles.

January 23, 2007 - 10:23am

While Quest Aircraft’s brawny high-wing all-metal utility turboprop didn’t achieve FAA certification by the end of last year as the company had hoped, the program continues on the path to approval in the first quarter of this year. By mid-December, the prototype had logged nearly 600 hours of flight testing.

January 10, 2007 - 5:43am

Canada’s Transportation Safety Board has made recommendations in line with the growing concern from the FAA and NTSB about the safety of Cessna 208 Caravans in icing conditions.

January 8, 2007 - 9:00am

Further icing accidents and incidents involving the Cessna Caravan, flight manual revisions that contain erroneous data and recent flight tests prompted the FAA last week to issue AD 2006-06-06. The new directive supercedes AD 2005-07-01 issued last March.

 
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