Air cargo first officer describes an attempt to taxi out of the parking spot; forgetting that the me...

Narrative:

Sgf ramp is a power out ramp versus a pushback. After starting both engines and doing the after start checklist; the capt asked to call for taxi clearance. As I was doing this; he released the parking brake and starting to power up. The mechanic came on and said 'I'm still down here'. The capt stopped immediately and apologized profusely. The mechanic said it was not a problem and signed off. The marshaller guided us out and we departed uneventful. This was just us not paying close enough attention. When we are pushed back; we are used to hearing pushback crew say their 'speech' about the pins and tug. Of course we didn't hear this as it was a power out. I guess it just threw us off. No excuse for it; it just happened. It sounds cliche but we just needed to pay better attention. The capt felt horrible about it. I don't think we rolled more than a foot or two but it could've been bad had the mechanic not been paying attention. I as first officer will try and be better backup and consciously slow things down when things aren't going 'according to script'.

Original NASA ASRS Text

Title: Air Cargo First Officer describes an attempt to taxi out of the parking spot; forgetting that the Mechanic is still below the aircraft on the headset; waiting for the 'cleared to disconnect' command. The aircraft is quickly stopped and no injuries occur.

Narrative: SGF ramp is a power out ramp versus a pushback. After starting both engines and doing the after start checklist; the capt asked to call for taxi clearance. As I was doing this; he released the parking brake and starting to power up. The mechanic came on and said 'I'm still down here'. The capt stopped immediately and apologized profusely. The mechanic said it was not a problem and signed off. The marshaller guided us out and we departed uneventful. This was just us not paying close enough attention. When we are pushed back; we are used to hearing pushback crew say their 'speech' about the pins and tug. Of course we didn't hear this as it was a power out. I guess it just threw us off. No excuse for it; it just happened. It sounds cliche but we just needed to pay better attention. The capt felt horrible about it. I don't think we rolled more than a foot or two but it could've been bad had the mechanic not been paying attention. I as FO will try and be better backup and consciously slow things down when things aren't going 'according to script'.

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.

Attributes
ACN	1204430
Time
Date	201409
Local Time Of Day	1201-1800
Place
Locale Reference	SGF.Airport
State Reference	MO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Person 1
Function	First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Deviation - Procedural Published Material / Policy

Air cargo first officer describes an attempt to taxi out of the parking spot; forgetting that the mechanic is still below the aircraft on the headset; waiting for the 'cleared to disconnect' command. The aircraft is quickly stopped and no injuries occur.