Final answer:
A 43 year old pilot flying single-pilot VFR in a commercial operation maintains a category 1 medical certificate by having a medical exam every 12 months, an ECG every 6 months, and an audiogram as required.
Step-by-step explanation:
A 43 year old pilot flying single-pilot VFR in a commercial operation can maintain a category 1 medical certificate by having a medical exam every 12 months, an ECG every 6 months, and an audiogram as required.