the AMM will stipulate at the beginning of the task, open cowls IAW.... and at the end of the task it would be something like close cowls iaw AMM.... Therefore when the task is signed for in the tech log iaw AMM.... the closing and securing of the cowls is covered.
It would be rare to have a statement in the log to say fan cowls opened, please close.
interesting article especially page 16 on.....
closing cowls! 