The NPRM for the IPSB was released last summer. The benefit of this rule, requiring installation and use of IPSBs on airplanes in part 121 service, is to slow such an attack long enough so that an open flight deck door can be closed and locked before an attacker could reach the flight deck.”Īircraft operators must comply when operating transport category airplanes manufactured two years after the effective date of this final rule. The NPRM notes “when the flight deck door must be opened for lavatory breaks, meal service, or crew changes, the flight deck could be vulnerable to attack. This final regulation affects operators conducting passenger-carrying operations under Title 14 of the Code of Federal Regulations (14 CFR) part 121 with transport category airplanes operating in the United States. Under the rule, aircraft manufacturers are required to have installed physical secondary barriers (IPSB) on commercial aircraft produced after the rule takes effect.Īccording to the Notice of Proposed Rulemaking, the IPSB will be closed and locked whenever the flight deck door is opened while the airplane is in flight.
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