To buy a plane for business or personal use can be a dream come true for many budding pilots or aviators. If you are such a person, you should realize that you are embarking on something thatâ¤™s sure to be a costly venture, so you must ensure that your investment will pay off. Here are some important considerations to make when purchasing:90% RuleMake sure that you can fully use your aircraft about 90% of the time, otherwise, it might end up being little more than a failed, underutilized venture. You can guarantee optimized use of your plane by identifying exactly what you need and how you will be using the aircraft. Thankfully, many companies like Holstein Aviation can help you with this preliminary step.