Fri, May 24, 2013
Move The Result Of Three Accidents Involving Airplanes Colliding With Meteorological Evaluation Towers
The NTSB has issued six broad-reaching safety recommendations after three accidents in which airplanes collided with Meteorological Evaluation Towers (METs). In each of the accidents, which occurred between 2005 and 2011, the MET was unmarked and unlighted. All resulted in fatal injuries. In the 2011 case, the permit for the MET had expired more than a year before the accident occurred, but it had not been removed as stipulated by its permit. The Board says that METs are often temporary structures, and at under 200 feet tall, are not required to be marked and lighted by the FAA.
The Board recommends that the FAA amend 14 Code of Federal Regulations Part 77 to require that all meteorological evaluation towers be registered, marked, and—where feasible—lighted, and that the agency create and maintain a publicly accessible national database for the required registration of all meteorological evaluation towers.
They further recommend that the American Wind Energy Association revise the Wind Energy Siting Handbook to clearly indicate the hazards that meteorological evaluation towers (MET) pose to low-altitude aviation operations and encourage voluntarily marking them to increase their visibility by reference to Advisory Circular70/7460-1, “Obstruction Marking and Lighting.” The association should also inform members about the circumstances of the airplane accidents that have occurred in connection with the presence of meteorological evaluation towers (MET) and emphasize the importance of understanding the aviation safety hazards associated with METs when erecting them.
The Board says that in the review and approval of applications processes for the construction of METs conducted by the United States Department of the Interior, the United States Department of Defense, and the United States Department of Agriculture, applicants should be provided a copy of, or directed to Advisory Circular 70/7460-1, “Obstruction Marking and Lighting.”
Finally, the board urged 46 States, the District of Columbia, the commonwealths of Puerto Rico and the Northern Mariana Islands, and the territories of America Samoa and the U.S. Virgin Islands to pass legislation requiring that meteorological evaluation towers be marked and registered in a directory.
(NTSB image of accident site with MET visible in the background)
Vicious Campaign Against Skydiving Operation By Small, But Vocal, Group Loses Court Case News/Analysis by ANN CEO/Editor-In-Chief, Jim Campbell Those of us who work and play in the>[...]
Also: Air Power Museum, ANN Could Use A Little Help From Its Friends, GE Honda, Mexican-Registry TBM 900, Legacy 500, BBJ Winglets, Wheels Up Order The new Falcon 5X is getting clo>[...]
Progress Continues To Be Made To Return Humanity To The Moon XPRIZE and Google have officially confirmed a further extension of the $30 million Google Lunar XPRIZE. XPRIZE notes th>[...]
“It is the Sikorsky Innovations charter to identify the toughest challenges in vertical flight, and to demonstrate solutions to them. Getting an all-new aircraft into flight,>[...]
CoAxial Helo Heralds Development Of Exciting New Rotorcraft We knew it was close... and now it's real. Sikorsky has confirmed the successful first flight of the S-97 RAIDER helicop>[...]