Required Inspections and Checks

A	Annual Inspection	12 months	91.409
A	ADs and Life-Limited Parts	As required	91.403
V	VOR Check (for IFR)	30 days	91.171
1	100-hour inspection	Every 100 hours*	91.409
A	Altimeter / Static System inspection	24 months (2 years)	91.411
T	Transponder	24 months (2 years)	91.413
E	ELT Inspection	12 months	91.207

* Required for all aircraft under 12,500 pounds used to carry passenger for hire. Or, if used for flight instruction where the aircraft is provided by the CFI.