I am working with a small calss of student who are blind or visually impaired. I have been using the SWIFT Playgrounds Tello page so I can use VoiceOver over and the other accessibility features of iOS. Is it possible to program in SWIFT on the iPad to enter commands directly? Apps susch as DroneBlocks are not accessible.

Hi Firzyk, thanks for your love for these children. We are so happy to help you.
In regard to the problem, swift requires regular programming. It is programmed differently from scratch or Tello edu app. So please finish the program before taking off. If Tello doesn't receive any signals from the program for 15s, it will protect landing. May I know what's else problem while you program. Could you please send us a screenshot showing your problem.
In regard to DroneBlocks, we are so sorry that we don't have the ability to assist your problem. Please search for the contact information for technical support for help.
Thanks a lot. Have a good day.