The ” Nose-gear gravel deflector”- the most prominent and perhaps one which stands out from the rest, is used to keep the gravel off the underbelly and from flying into the engines.Additionally, if the surface wasn’t hard enough, it could still be used by reducing tyre pressure down to a minimum of 40psi per chart. As a part of its service to assess the suitability of potential strips, Boeing mandated that The surface had to be smooth with no bumps higher than 3 inches in 100ft good drainage with no standing water or ruts and the surface material had to be at least 6 inches thick with no areas of the deep loose gravel. Regardless of the surface on which to be operated, certain guidelines are to be followed. They generally come as an add-on feature on aircraft to prevent the nose gear from spraying FOD into the engine and onto the underside of the fuselage or wings, and methods of preventing each engine from ingesting FOD from the ground directly in front of it. Technically, a gravel kit is a modification on an aircraft to avoid Foreign Object Debris (FOD) damage or ingestion while operating on unpaved surfaces.
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