Upon advancing throttles for takeoff; a 777 pilot reported receiving an EICAS takeoff configuration ...

Attributes
ACN	1276402
Time
Date	201506
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Nosewheel Steering
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

Lined up for takeoff; captain's leg. We straightened out and captain advanced the thrust levers and hit toga. As the power was starting to come up; we got a master warning and configure gear steering warning on EICAS. He rejected the takeoff immediately and the warning cleared. I advised the tower that we had aborted the takeoff and that we needed no assistance. We discussed what had happened and how fast we were going at that point. Since we had shutdown almost immediately; our ground speed was probably no faster than 20 KTS.we advised tower that we were ready to go and departed uneventfully.I thought that we had gone far enough to get the gear in lock position before takeoff. Apparently not far enough in this case. In the future; I will let it roll a lot further than 30 ft to make sure before I go to toga.

Original NASA ASRS Text

Title: Upon advancing throttles for takeoff; a 777 pilot reported receiving an EICAS takeoff configuration warning due to Main Landing Gear not locked for takeoff. A low speed rejected takeoff was performed.

Narrative: Lined up for takeoff; captain's leg. We straightened out and captain advanced the thrust levers and hit TOGA. As the power was starting to come up; we got a master warning and configure gear steering warning on EICAS. He rejected the takeoff immediately and the warning cleared. I advised the tower that we had aborted the takeoff and that we needed no assistance. We discussed what had happened and how fast we were going at that point. Since we had shutdown almost immediately; our ground speed was probably no faster than 20 KTS.We advised tower that we were ready to go and departed uneventfully.I thought that we had gone far enough to get the gear in lock position before takeoff. Apparently not far enough in this case. In the future; I will let it roll a lot further than 30 FT to make sure before I go to TOGA.

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.

Upon advancing throttles for takeoff; a 777 pilot reported receiving an EICAS takeoff configuration warning due to main landing gear not locked for takeoff. A low speed rejected takeoff was performed.