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Boniface's participation in aircraft crash investigations in the 1940s and in the

accident investigation of the loss of one of the wings at cruise altitude on each of two

Lockheed Electra turboprop powered aircraft (Flight #542 operated by Braniff

Airlines in 1959 and Flight #710 operated by Northwest Orient Airlines in 1960) that

led to his wondering what the pilots may have said just prior to the wing loss and

during the descent as well as the type and nature of any sounds or explosions that

may have preceded or occurred during the wing loss. His patent was for a device for

recording audio of pilot remarks and engine or other sounds to be "contained with

the in-flight recorder within a sealed container that is shock mounted, fireproofed and

made watertight" and "sealed in such a manner as to be capable of withstanding

extreme temperatures during a crash fire". The CSR was an analog device which

provided a progressive erasing/recording loop (lasting 30 or more minutes) of all

sounds (explosion, voice, and the noise of any aircraft structural components

undergoing serious fracture and breakage) which could be overheard in the cockpit.

United States Patent 8,766,820 by Santiago Fontaina July 1, 2014 is a

device for locating crashed aircraft. invention which consists of a device especially

configured for enabling locating an aircraft quickly which due to an accident has

fallen in an area where the search for the remains is especially difficult, such as the

sea or mountainous areas.

The invention here is made up of a container, with an automated lock which is

divided internally into two chambers (2 and 3) in which metal sheets and hollow

spheres are introduced; an attached beacon, a memory circuit; and it is operated by

means of an automated control.

Docket No. : Ticket 2180/215 15