Required inspections (AVIATES)

A mnemonic device representing mandatory aircraft inspections: Annual (every 12 calendar months), VOR equipment check (every 30 days for IFR), Inspections required by Airworthiness Directives, Altimeter/pitot-static system (every 24 calendar months for IFR), Transponder (every 24 calendar months), ELT (every 12 calendar months), and 100-hour inspection (if aircraft used for hire).