Log book - which one for vacuum pump and filters

[markscogg]

Just changed my vacuum pump, main filter and garter filter. Cleaned the hoses also. Which log book?
Pump in the engine log and filters in the airframe log?

[osxuser]

Airframe for everything.

The only things that go in the Engine log are things the engine needs to run, carb/injectors, mags, and arguably the starter.

[AMURRAY]

Anything that didn't come with the engine when new is an airframe item and goes in the airframe logbook. Examples are the alternator, starter, vacuum pump engine baffles, oil lines and exhaust system.
Aaron Murray