B737-700 flight crew reported returning to the gate because the eec switches were in the alternate p...

Attributes
ACN	1617646
Time
Date	201902
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	Engine Control
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 304
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 410
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Flight Deck / Cabin / Aircraft Event Other / Unknown

Narrative:

While completing the before takeoff checklist; we noticed during recall; engine annunciation indicating eec's were in altn mode. We pulled over to complete the QRH procedure. Captain spoke with maintenance and was advised to taxi back to gate. Maintenance was called out to the aircraft and noticed an error during the bite test and the eec's switches were pushed out.although schedule pressures were involved; my captain and I used [risk management] to purposely take our time running checklists. During the before start/originating checklist; when I read the checklist item referring to eecs; I know I looked up at the eecs while captain responded; and I thought I observed an on indication. The plastic cover was scratched and hazy and I may have overlooked it. To prevent this in the future; I will take extra time and attention in ensuring switches are in the correct position before moving on to the next item.

Original NASA ASRS Text

Title: B737-700 flight crew reported returning to the gate because the EEC switches were in the alternate position.

Narrative: While completing the Before Takeoff Checklist; we noticed during Recall; ENG annunciation indicating EEC's were in ALTN mode. We pulled over to complete the QRH procedure. Captain spoke with Maintenance and was advised to taxi back to gate. Maintenance was called out to the aircraft and noticed an error during the BITE test and the EEC's switches were pushed out.Although schedule pressures were involved; my Captain and I used [risk management] to purposely take our time running checklists. During the Before Start/Originating Checklist; when I read the checklist item referring to EECs; I know I looked up at the EECs while Captain responded; and I thought I observed an ON indication. The plastic cover was scratched and hazy and I may have overlooked it. To prevent this in the future; I will take extra time and attention in ensuring switches are in the correct position before moving on to the next item.

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.

B737-700 flight crew reported returning to the gate because the eec switches were in the alternate position.