For many years, taxpayers could "pay" for their personal entertainment use of the aircraft, or utilize SIFL income, and deduct 100% of aircraft depreciation and expenses.
That "game" is long gone with the law changes in recent years. Generally, any entertainment use of the aircraft - business or personal - is no longer deductible. Paying or reimbursing the company for personal use is problematic as the FAR's (Federal Aviation Regulations) impose limitation on the payment for transportation
However, any personal non-entertainment use (PNE) of the aircraft can continue to receive favorable income tax treatment. Some examples of PNE flights - bereavement, medical appointment, charitable use, etc. Proper handling of PNE flights is critical in maximizing your aircraft tax deductions.