I receive a lot of payments by check from club members. The payment window needs to allow for the check number to be use when receiving the payment.

When a pilot switches between clubs, you currently require him/her to select another club before you switch to that club. I speculate that the vast majority of your pilots who list more than one club, list two clubs - so for that "vast majority" the selection of "another club" is obvious, unnecessary, and wasteful of both pilot time and your processing cycles.
if pilot lists only two clubs, please avoid redundant effort/time by pilots (and unnecessary entry-processing by your processor ?) by automatically switching to the other club.

Currently the "Add to calendar" feature under reservations on web site will add the title of the flight school on the reservation in the icalendar. It would be very helpful to show: 1. Name 2. Tail Number 3. Student name (if applicable) as the title in the icalendar and Google calendar.

Put a banner above the squawk entry window to remind people to enter only one item per squawk. Having to clear out multiple unrelated things in one window results in a lot of hassle and makes it difficult to follow resolution of squawks in the system.

For reactivating a subscription for a member, we should have the option to begin billing on a specific date (just like when we add a new subscription).

Incorporate PKI/digital signature technology to allow for digital signatures at the dispatch and maintenance level. We are trying to get approval to go completely digital in order to meet requirements of AC 120-78A and this would be the starting point.

When graduating a student from training course it would be helpful to see what lessons have been flown but not logged.

It would be very helpful for students/renters to be able to see the notices from the mobile app

Much like linking a Sportys account, it would nice to link Cloud Ahoy account, and possibly be able to view flight data from Ahoy or access it in Ahoy from FSP.

It would be nice if our standby reservations could be seen through the maintenance overlay instead of having to filter the schedule to view them which then doesn't allow you to see the rest of the schedule. It makes it tough to reschedule standbys when necessary.

When a plane goes down, to a red status, the CFI is not notified that his/her aircraft is unavailable. So, without calling the front desk or using a desktop site I cannot check status.
More importantly, I have no notification of when that plan returns to service. A "watch" function would be great.

Notifications, push, text, email, etc when a plane goes back to Green.

Have some type of screen to display the daily schedule on a large TV screen for flight schools. Perhaps something like a departures screen similair to what is at an airport that will show the time of departure (reservation) of each aircraft and instructor. Or get an api so that I can create my own.

Create a one page report by tail number that shows all required inspections & maintenance completed dates and due dates to have a "quick view" of an aircraft's airworthy status

For example: https://www.gocivilairpatrol.com/media/cms/01_AIF_CVR_46883189C71A9.pdf

My complex and high performance endorsements were received in a C206 on floats. This flying club has no such aircraft.

Integrate Stripe Credit Card Processing. We're unable to utilize your system to the fullest and request a lot of support tickets after sync due to being unable to merge these systems. It'd be extremely helpful for our entire operation, and we'd be able to use more functions in the system if we we're currently managing so many others.

Showing lessons as "Unsatisfactory" which are in fact simply incomplete due to lack to time or which have subsequently been completed satisfactorily is both misleading and demoralizing to the student. This score should be retained only for those lessons which have been completed, but which are not yet at a satisfactory level.

If an instructor works for two companies on your system it would be nice if it were smart enough to block unavailable time on the company A schedule if the instructor books a flight for company B.

Add a link to view student's training in people tab

Allow for rental agreements, waivers, etc., to be electronically signed in FSP by a renter and the FBO/school/club. After signing, all signers should get a PDF of the document with their electronic signatures recorded. The documents should be filed with the signers' accounts.