Maintenance Powerplant; Maintenance Airframe
Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown
General None Reported / Taken
Procedure
An air start was needed at [gate] on a quick turn. when I went on the headset I told the Captain we are ready for an air start. He then proceeded to start engine number 2 on his own. An agent did not know that engine was on and walked right in front and almost got sucked in.
Ground personnel reported Captain started engine without obtaining clearance; almost ingesting a ground agent.