B757-200
Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Procedure; Equipment / Tooling; Human Factors
Prior to installation of Thrust Reverser Hoist assy.1. Checked out Thrust Reverser (TR) Hoist Kit; from stores. Item was located in the Engine Change Build up Kit. 2. Inspected hoist equipment available in TR hoist kit.Items available in TR hoist kit was;A. 2 sets of mount bolts; (2 ea. same size and length).B. 1 ea. Hoist chain assy. with mount.As is; Installed equipment available for TR removal. Mount bolts were tight and re-checked before T/R removal. Bolts remained tight.TR; was removed and moving toward the TR shipping crate; by fork lift.  At the time the TR dropped; I was in the process of getting some covers for the engine anti-ice duct; and was walking away from the incident. But heard the impact of the TR hitting the floor. Always inspect tooling before use. Follow Maintenance Manual procedures.
After removing the Thrust Reverser (TR) from the aircraft the TR dropped to the ground while transporting it to a shipping crate.