I'm currently waiting for the FAA to review my CPAP information. I did a in lab study after a stroke about two years ago that showed my AHI of 18.5, but no treatment was ever done. When I sent in paperwork for my SI, the FAA said I didn't meet their standards and required treatment, so I did another home study through RPM. The home test showed a AHI of 20. I purchased a AirSense10 from them and it records everything the FAA needs, including any apnea events during use (mine dropped to between 0-4 per hour) plus they provide lifetime monitoring for free. The Airsense10 also has a app that will show how many hours you used the machine each night and how your treatment is working, so you can make any small adjustments to your mask seal if needed. Randy at RPM has been very helpful, my first home sleep test malfunctioned a they sent out another test immediately and the CPAP equipment arrive in a couple of days after I ordered it. I checked several places and they had the best prices, my sleep study and equipment were under $600. Be sure to sign up for their email specials because that saved me over a $100. Unfortunately they don't take insurance but they will provide everything you need to submit it yourself. Also they will do half down on the equipment and I think it was either three or six months on the balance till paid off with no interest.