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Static article No.1, which had been intended for load tests of the paraglider, ejection seat, hatch, and cabin pressurization, was redesignated spacecraft No. 3A and replaced spacecraft No. 3 in the Project Orbit test program. A McDonnell review of the entire static test program in December 1962 had resulted in eliminating static article No. 1 and making static articles Nos. 3 and 4 the primary structural test articles. No. 3 was subjected to launch, reentry, abort, landing, and parachute loads; and No. 4 to seat, hatch, and pressurization loads plus dynamic response tests.