This configuration did not include the drogue stabilization chute being developed for spacecraft Nos. 3 and up. Several failures marred the first test drop, requiring McDonnell to redesign and strengthen the brackets that attached the parachute container to the rendezvous and recovery section and to redesign the sequencing circuit. Further work on the brackets was needed after the second test, on May 28, when the brackets buckled, though they did not fail. The third and final test, on June 18, successfully completed the qualification of the parachute system. Static article No. 7 was then modified for use in Phase III testing to qualify the revised parachute system incorporating the drogue chute. Phase III began December 17.