Commercial Fixed Wing
Situational Awareness; Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown
General None Reported / Taken
Human Factors
After pushing [another aircraft]; a fellow employee that was working the gate with me told me everything was setup for the tow over to [another] gate. I hooked up the tow bar not verifying that there was a bypass pin in because I was told everything was set up; but I should have verified that it was. Another employee started [to] tow the plane and the main gear snapped the tow bar on the main gear.
A ramp employee reported a broken tow bar event that took place when the bypass pin installation was not verified prior to pushback.