NTSB Safety Recommendations A-10-105 through -118

[NTSB Press Releases <NTSBPressReleases@xxxxxxxx>]

Title: NTSB Safety Recommendations A-10-105 through -118

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                   NTSB SAFETY RECOMMENDATION

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National Transportation Safety Board

Washington, DC 20594

July 30, 2010

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NTSB Safety Recommendations A-10-105 through -118

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The National Transportation Safety Board makes the following

recommendations to the Federal Aviation Administration:

Conduct research into and document the effects of mountain

wave and downslope conditions at airports, such as Denver

International Airport, that are located downwind of

mountainous terrain (including, for example, airports in or

near Colorado Springs, Colorado; Anchorage, Alaska; Salt

Lake City, Utah; and Reno, Nevada), identify potential

mountain-wave-related hazards to ground operations at those

airports, and disseminate the results to pilots and airport

air traffic control personnel to allow for more informed

runway selection decisions. (A-10-105)

Archive all low-level windshear alert system (LLWAS) data

obtained from Denver International Airport and other

airports that experience similar wind conditions and make

these data available for additional research and the

potential future development of an improved LLWAS algorithm

for crosswind and gusty wind alerts on air traffic control

tower ribbon display terminals. (A-10-106)

Modify Federal Aviation Administration Order 7110.65 to

require air traffic controllers at airports with multiple

sources of wind information to provide pilots with the

maximum wind component, including gusts, that the flight

could encounter. (A-10-107)

Review the required documentation for all low-level

windshear alert system (LLWAS)-equipped air traffic control

towers to ensure that a letter to airmen has been published

and is easily accessible describing the location and

designation of the remote sensors, the capabilities and

limitations of the system, and the availability of current

LLWAS remote sensor wind information on the request of a

pilot, in compliance with Federal Aviation Administration

Order 7210.3. (A-10-108)

Require air traffic control towers to locally develop and

implement written runway selection programs that proactively

consider current and developing wind conditions and include

clearly defined crosswind components, including wind gusts,

when considering operational advantage with respect to

runway selection. (A-10-109)

Gather data on surface winds at a sample of major U.S.

airports (including Denver International Airport) when high

wind conditions and significant gusts are present and use

these data to develop realistic, gusty crosswind profiles

for use in pilot simulator training programs. (A-10-110)

Require 14 Code of Federal Regulations Part 121, 135, and

91K operators to incorporate the realistic, gusty crosswind

profiles developed as a result of Safety Recommendation A-

10-110 into their pilot simulator training programs. (A-10-

111)

Once realistic, gusty crosswind profiles as asked for in

Safety Recommendation A-10-110 are developed, develop a

standard methodology, including pilot-in-the-loop testing,

for transport-category airplane manufacturers to establish

empirically based, type-specific maximum-gusting-crosswind

limitations for transport-category airplanes that account

for wind gusts. (A-10-112)

Once a methodology as asked for in Safety Recommendation A-

10-112 has been developed, require manufacturers of

transport-category airplanes to develop type-specific,

maximum-crosswind takeoff limitations that account for wind

gusts. (A-10-113)

Until the actions described in Safety Recommendation A-10-

113 are accomplished, require manufacturers of transport-

category airplanes to provide operators with interim

crosswind takeoff guidelines that account for wind gusts.

(A-10-114)

Work with U.S. airline operators to review and analyze

operational flight data to identify factors that contribute

to encounters with excessive winds and use this information

to develop and implement additional strategies for reducing

the likelihood of wind-related runway excursions. (A-10-115)

Require cockpit crew seats installed in newly manufactured

airplanes that were type certificated before 1988 to meet

the crashworthiness standards contained in 14 Code of

Federal Regulations 25.562. (A-10-116)

Require operators to perform periodic inspections on the

Burns Aerospace model 2501-5 jumpseats for fatigue cracks

within the jumpseat structure and replace the jumpseat if

fatigue cracks are found. (A-10-117)

Require that operators of transport-category airplanes that

use galley latches or latch plates secured solely by

adhesives that may degrade over time modify the latches to

include mechanical fasteners. (A-10-118)

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http://ntsb.gov/recs/letters/2010/A-10-105-118.pdf

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The complete recommendation letter is available on the Web

at the URL indicated above.

The letter is in the Portable Document Format (PDF) and can

be read using the Acrobat Reader 5.0 or later from Adobe

(http://www.adobe.com/prodindex/acrobat/readstep.html).

       

An archive of recommendation letters is available at

http://www.ntsb.gov/recs/letters/letters.htm.

Electronic versions of letters may or may not include

enclosures; however, related publications, accident

briefs, and aviation accident synopses may be found

on the NTSB website.

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