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Notice of proposed rulemaking (NPRM).

Under this notice, the FAA proposes to implement certain security related requirements governing the design of transport category airplanes. The requirements would provide improved airplane design features and greater protection of the cabin, flightdeck, and cargo compartments from the detonation of explosive or incendiary devices, penetration by projectiles, and intrusion by unauthorized persons. The FAA also proposes to require operators to establish a "least risk bomb location" on all affected airplanes. These proposed changes would adopt several International Civil Aviation Organization (ICAO) standards. Also, this notice discusses six proposed advisory circulars (ACs) and proposed changes to two existing ACs.

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