scope:

Description of Driving Event:

During installation of the orbiter GN2 tanks, the H70-0649 lifting adapter is used to raise the GN2 tank from the orbiter processing facility floor to the orbiter payload bay. The adapter is designed for the tank to sit flush in the cradle, but its configuration allows only the GN2 tank boss threads to sit on the adapter cradle. As a result, the tank boss supports the total tank load. This "improper fit" condition contributes to the inability to properly secure the GN2 tank during lifting operations, possibly resulting in damage to the tank, the orbiter payload bay, and/or personnel injury.