Narrative:

My captain was in a hurry to get home. He had plans and we were running late due to weather. I was picking up weather and receiving our clearance to depart while he was taxiing the aircraft. I was heads down for most of the taxi; setting up equipment and writing down clearances. It was a short taxi from the FBO. The captain taxied into the hold short position of runway. I received a clearance void time and I switched the radio to the local CTAF. Before I could make a radio call or run the taxi check and before takeoff check; he increased power to taxi into position for takeoff. A medical helicopter was on short final right above the threshold. The helicopter pilot immediately made a position report and the captain slammed on the brakes. It was a very close call. One that could have been avoided by not rushing. Not allowing another pilot to rush you and sacrifice safety. Both pilots should be heads up while taxiing. Both pilots should verify that final is clear. And checklists should always be completed regardless of how late you're running. This experience has helped me to be more proactive in seeing that the chain of events begins with letting outside factors affect the safety in your cockpit. Being late is better than not arriving at all.

Google
 

Original NASA ASRS Text

Title: A PC12 flight crew had a close encounter with a medical helicopter when the Captain taxied onto the runway without calling on CTAF first.

Narrative: My Captain was in a hurry to get home. He had plans and we were running late due to weather. I was picking up weather and receiving our clearance to depart while he was taxiing the aircraft. I was heads down for most of the taxi; setting up equipment and writing down clearances. It was a short taxi from the FBO. The Captain taxied into the hold short position of runway. I received a clearance void time and I switched the radio to the local CTAF. Before I could make a radio call or run the taxi check and before takeoff check; he increased power to taxi into position for takeoff. A medical helicopter was on short final right above the threshold. The helicopter pilot immediately made a position report and the Captain slammed on the brakes. It was a very close call. One that could have been avoided by not rushing. Not allowing another pilot to rush you and sacrifice safety. Both pilots should be heads up while taxiing. Both pilots should verify that final is clear. And checklists should always be completed regardless of how late you're running. This experience has helped me to be more proactive in seeing that the chain of events begins with letting outside factors affect the safety in your cockpit. Being late is better than not arriving at all.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.