"1. End of the day
2. End of the day at a Maintenance Base
3. Crew change (Hands A/C over to another crew with Nice log book writeup)
4. One crew writes up reading light Immediataly other guy flys around all day with 2 knob throttle split. No worries. Aint aviation grand."
...and then there are those that are "Carried" by crews for a later time (such as when another aircraft becomes available) and/or they can fill the TL with snags as the aircraft comes in for hangar maintenance!