OK. So lets say there are two pilots. Tom, who owns the airplane and is PIC by virtue of being in charge of the flight. Tom is night current but is not an instructor. Now Dave, who is a pilot, rated in that type airplane, flies with Tom and is NOT night current. Tom lets Dave make three landings so Dave can become night current.
Tom certainly can log the flight as PIC because he is in charge of the flight. I thought the only way Dave can log the flight is if he is a required crew member and manipulating the controls. And I dont see that he is.
Now, if the situation is reversed and Tom, who owns the airplane and is PIC by virtue of being in charge of the flight but is NOT night current. But how can he be in charge of the flight if he is not night current? If he can be PIC in spite of that lack of currency, and he takes Dave, who is now a required crew member because he IS night current and Tom isn't. So Tom has to be the manipulator of the controls so he can get night current. Dave isnt the PIC by virtue of being in charge of the flight OR manipulating the controls. So that doesn't work either.
I dunno, it doesnt add up in those above two scenarios. But like I say I don't know.
The only way I see it working is if Tom appoints Dave to be PIC in Tom's airplane by virtue of being in charge of the flight. But that one is iffy, since Tom owns the airplane and can't really abdicate PIC by virtue of being in charge of the flight. I mean if its Toms airplane, and hes in it, hes in charge and can't escape that.
I dunno, I can tell you this, it isn't happening in my airplane. If Im not night current, Im PIC by virtue of being in charge of the flight and the other pilot isn't a required crewmember because I can fly without him and get current on my own. I can't abdicate being in charge of the flight if I'm in my airplane. Now with an airline where some company owns the airplane and the pilots can shuffle it around any way they want, that is different. There is no ownership there. But they are all instructors anyway. But it applies to rentals also, because if I rent it, Im responsible for it.
Thats the way I see it. I really dont know for sure and dont think anyone does. You probably could log it and get away with it, I mean how is anyone going to know the details and do the mind boggling. If it came up on your airline interview the guy would probably accept it unless hes going to 3rd degree you and find out the details. If not accepted he's probably just not accept it and not care if its a little wrong, go on to the next one. Unless hes just looking for something to ding you on. But why log something that is iffy. If in doubt don't log it. I mean what are you in desperate need of another hour or something? Just go out and fly some more. Yeah money.
And no, there is no requirement to log every flight, just have to log enough for currency. That one is for sure.