Medium Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Training / Qualification; Situational Awareness
Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors
Strong winds and a good landing by my First Officer allowed us to pull off of Runway 30R at taxiway Golf with relative ease. A short taxi to the gate. After the parking brake was set at the gate we were still in our two minute cool down period. My moment of alarm came when the forward cargo door was opened. Engines were still running and the beacon was on. My eyes immediately darted to the reflection of the aircraft from the terminal windows. I could then see the crew member in question was now away from the engine in a relative safe place. I elected to allow the engine to continue to cool down. I transmitted on the operations frequency to speak to the ramp supervisor for this gate. The engines were shut down and the parking check was completed. The ramp supervisor was very professional and said that he witnessed the crew member do what he did. I expressed my concern of how dangerous that was. While my First Officer was outside on the post flight; the crew apologized to him. I was informed by the ramp supervisor the team member in question was fairly new. Emphasize training to new hire ramp workers how dangerous this is. Somebody could have been killed.
We landed on 30R and taxied off the runway with a left hand turn. Ground cleared us to taxi and the ground crew was standing by to marshal us in. I completed the After Landing check as directed by the Captain. We were marshaled in and the Captain parked the aircraft and placed the parking brake on. I then announced 'cool down not complete'. No more than 10 seconds after the captain placed the parking brake on we received Red Waring lights; alarms and EICAS messages. These messages were for the front and rear cargo doors being opened by the ramp personnel while the engines were still running. I canceled the warnings and we waited for the required cool down period before the Captain shut down the engines and called for the parking check.
Air carrier flight crew reported ramp personnel opened both cargo doors prior to the engines being shut down.