Narrative:

Experienced maintenance delay prior to departure which eventually resulted in an aircraft swap. New aircraft came from hangar and required an additional troubleshoot to clear avionics discrepancy. Asked to refile after cleared to taxi. This was the start of mild mental fatigue. After takeoff we experienced a high workload with multiple heading; altitude and frequency changes. The pilot flying called for the after takeoff checklist. I did the after takeoff flow and ran through the after takeoff checklist. I read the 'thrust rating climb checked' and looked at the climb button to verify that I had pressed it; but failed to specifically look on EICAS to verify that climb was reflected. When we reached cruise altitude the PF called for the cruise checklist and upon running the cruise checklist we realized that we were still in to-1 and pressing the cruise button would not change the thrust setting. It became apparent that during the takeoff run the thrust was inadvertently placed in the max power detent and was the reason climb and crz power was not established during the climb. We established crz power and continued the flight. Upon arrival I called operations and was told that because we did not receive any warning/caution/advisory message the aircraft did not require any further inspection.mild mental fatigue prior to departure due to maintenance delays and trouble shooting. Lack of experience/proficiency and recent experience in 'type.' mental saturation during a high workload phase of flight. Failure to diligently cross-check while running a checklist.adhere to SOP and diligently cross-check during checklist execution. The coronavirus has created an unprecedented situation for all of us. After receiving the minimum IOE; I had only flown four legs when everything shut down in ZZZ. I didn't fly for almost three months. The flight regarding this report was my third leg since the shutdown. I think that the company should be looking more closely at who (while still technically legal) may need refresher training/recurrent/more IOE etc. Currency/consolidation/proficiency isn't just a legality; it is also a factor in the safety of our employees and passengers.

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Original NASA ASRS Text

Title: Air carrier First Officer reported he had inadvertently pushed the thrust levers into detent setting on takeoff; which was not recognized until reaching cruise flight.

Narrative: Experienced Maintenance delay prior to departure which eventually resulted in an aircraft swap. New aircraft came from hangar and required an additional troubleshoot to clear avionics discrepancy. Asked to refile after cleared to taxi. This was the start of mild mental fatigue. After takeoff we experienced a high workload with multiple heading; altitude and frequency changes. The pilot flying called for the after takeoff checklist. I did the after takeoff flow and ran through the after takeoff checklist. I read the 'thrust rating climb checked' and looked at the climb button to verify that I had pressed it; but failed to specifically look on EICAS to verify that CLB was reflected. When we reached cruise altitude the PF called for the cruise checklist and upon running the cruise checklist we realized that we were still in TO-1 and pressing the cruise button would not change the thrust setting. It became apparent that during the takeoff run the thrust was inadvertently placed in the max power detent and was the reason CLB and CRZ power was not established during the climb. We established CRZ power and continued the flight. Upon arrival I called Operations and was told that because we did not receive any warning/caution/advisory message the aircraft did not require any further inspection.Mild mental fatigue prior to departure due to maintenance delays and trouble shooting. Lack of experience/proficiency and recent experience in 'type.' Mental saturation during a high workload phase of flight. Failure to diligently cross-check while running a checklist.Adhere to SOP and diligently cross-check during checklist execution. The Coronavirus has created an unprecedented situation for all of us. After receiving the minimum IOE; I had only flown four legs when everything shut down in ZZZ. I didn't fly for almost three months. The flight regarding this report was my third leg since the shutdown. I think that the company should be looking more closely at who (while still technically legal) may need refresher training/recurrent/more IOE etc. Currency/consolidation/proficiency isn't just a legality; it is also a factor in the safety of our employees and passengers.

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.