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The second or relief pilot of an aircraft.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Aeronautics) a second or relief pilot of an aircraft
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkoʊˌpaɪ lət)

a pilot who is second in command of an aircraft.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.copilot - a relief pilot on an airplanecopilot - a relief pilot on an airplane  
crew - the men and women who man a vehicle (ship, aircraft, etc.)
airplane pilot, pilot - someone who is licensed to operate an aircraft in flight
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Copilot is a Level 2 safety system that uses a camera-based software suite to control braking, throttling and steering.
HealthLytix's CT CoPilot integrates into existing clinical workflow to improve radiologist efficiency, measurement accuracy and clinical confidence by automatically providing consistent views of head CT exams.
CoPilot functions as a notification system, a communications tool and a coach and is designed to provide a simple and practical programme that can be used by technicians of all levels of experience.
CoPilot takes data directly from the sensors on the machine--such as linear position transducers, hydraulic-pressure transducers, and load cells.
26, 2015, an unauthorized individual gained access to confidential patient reimbursement data of CoPilot via the website administration interface, PHPMyAdmin.
Email Copilot provides pre-send data to pinpoint possible deliverability issues before they occur, as well as post-send monitoring and alerts to notify the user when deliverability results fall outside of the normal range.
A full report released earlier this month by France's Civil Aviation Safety Investigation Authority reveals that the copilot recently had resumed treatment with a psychiatrist, as well as several other physicians, without informing his employer.
The copilot directed me to start an immediate descent back towards the ship as he declared an emergency with tower.
It was assumed the captain had gone to the toilet, leaving the copilot in charge of the plane.
As a demonstration, the helicopter aircraft commander (HAC) would make the first landing at each of a succession of different sites, after which the copilot would take over and make two landings at each site.
NNA - A Turkish pilot and copilot were abducted in Beirut in the early hours of Friday morning by armed men who cut off their road as they were on a bus heading from Rafik Hariri International Airport to a hotel in Ain Mreisseh.