What oil pressure is considered acceptable while idling during aerobatics?

In a T-6, the acceptable oil pressure range while idling during aerobatics is indeed 15 to 40 PSI. This range is critical for ensuring that the engine maintains proper lubrication and functions effectively during maneuvers that may cause variations in oil pressure.

When the aircraft is in an idle state, especially during aerobatic maneuvers, it's vital that the oil pressure remains within this specified range. Oil pressure that is too low may indicate inadequate lubrication, leading to potential engine damage or failure, while excessive pressure could be indicative of oil system issues.

Maintaining oil pressure within this range ensures that the engine components are receiving sufficient lubrication and that the oil system is operating efficiently, even during periods of low throttle or changes in aircraft attitude typical of aerobatic flying. Therefore, understanding these operational limits helps ensure safe and effective flight management.