Narrative:

While waiting on hospital roof for patient and medical crew; I noticed visibility decreasing with storms to the north and south of our route of flight; both moving east. I texted the crew still in the hospital that 'we need to get going.' admittedly; I was in a hurry. I used the rotor brake on shut down; staying in the cockpit for nvg security. Once the crew arrived I started the run up; I did not brighten the cad as I normally do; missing the rotor brake caution warning. I ran the throttles to fly and didn't notice the warning until my before take off check. Too late! I learned several lessons. Always use the check list especially in a dark cockpit. Don't let weather/patient status get me in a rush. Leave my hand on the rotor brake lever until returning it to the down position. Brighten the cad (as I usually do) before any other step. No excuses; just stupidity and being human I guess.

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Original NASA ASRS Text

Title: EC145 pilot; concerned about weather and the need to expedite departure; failed to note that the main rotor brake was engaged until after the throttles had been advanced for takeoff.

Narrative: While waiting on hospital roof for patient and medical crew; I noticed visibility decreasing with storms to the north and south of our route of flight; both moving East. I texted the crew still in the hospital that 'we need to get going.' Admittedly; I was in a hurry. I used the rotor brake on shut down; staying in the cockpit for NVG security. Once the crew arrived I started the run up; I did not brighten the CAD as I normally do; missing the Rotor Brake Caution warning. I ran the throttles to FLY and didn't notice the warning until my before take off check. TOO LATE! I learned several lessons. Always use the check list especially in a dark cockpit. Don't let weather/patient status get me in a rush. Leave my hand on the rotor brake lever until returning it to the down position. Brighten the CAD (as I usually do) BEFORE any other step. No excuses; just stupidity and being human I guess.

Data retrieved from NASA's ASRS site 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.