Annual
12 months
VOR
30 days
100 hours
Every 100 hours.
You can fly over the 100 hours with permission from the Flight Standards District Office (FSDO)
Altimeter
24 months
Static
24 months
Encoder
24 months
Transponder
24 months
ELT
Battery replacement after 1 hour of use or 50%
Inspection every 12 months
(ELT 121.5)