N49 - not 'take-off power'. The 737 calls for "70% N1" for the procedure (designed to generate enough centrifugal [nitpickers please ignore
] force to allow ice to be shed from blades and spinner.) Well below take-off power which is typically 93% or more.
For others, I am wondering where all this FO stuff on the runway is coming from? What sort of airfields are you operating from?