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braking action
- Definição1
- A term used by pilots to characterize the deceleration associated with the wheel braking effort and directional controllability of the aircraft.
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Circular 329: assessment measurement and reporting of runway surface conditions. Montreal, 2012. (Cir. 329-AN/191)
- Definição2
- A report of conditions on the airport movement area providing a pilot with a degree/quality of braking that he/she might expect.
- Fonte2
- FEDERAL AVIATION ADMINISTRATION. Pilot/controller glossary (P/CG). 2014. Disponível em: https://www.faa.gov/air_traffic/publications/atpubs/pcg/index.htm. Acesso em: 10 jun. 2014.
- Fonte3
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Aeronautical information services manual. 6th. ed. Montreal, 2003. (Doc. 8126 AN/872).
- Nota Adicional1
- Acronym in English: BA.
- Nota Adicional2
- Information regarding this term is a result of researches developed by DECEA in cooperation with ANAC.
- Nota Adicional3
- Braking action is reported in terms of good, fair, poor, or nil.
- Nota Adicional4
- The term “braking action” has been in continuous use in the aviation industry although it has been used in different contexts and will, as such, continue to be used in the general sense. Braking action, in the context of reporting purposes, is used to define the stopping capability of an aircraft using wheel brakes and is related to pilot braking action reports. The term braking action has also been used to describe the estimated surface friction on the ground measured by a friction measurement device and reported as aircraft stopping capability. The ICAO SNOWTAM format uses the term “estimated surface friction” and should be understood as the total assessment of the slipperiness of the surface as judged by the ground staff based upon all information available.
- Contexto
- When ice, snow or slush is present on 10% or less of the total area of a runway, the friction coefficient will not be measured and braking action will not be estimated. If in such a situation water is present, the runway will be reported WET. Where only water is present on a runway and periodic measurements so indicate, the runway will be reported as “WET”.
- Subárea
- Safety
- Français
- freinage