It's either you change the AirOpsForm to a Single Form that's set as a dialog form
Or do the following:
1. The textbox needs to be bound to a field
2. When you set the value from AirOpsForm you need to check:
a. is the current ID on AirOpsForm = the current ID of Aircraft form. If it is update the textbox's value
b. otherwise, run an UPDATE query
3. Requery Aircraft form to reflect changes.
Or do the following:
1. The textbox needs to be bound to a field
2. When you set the value from AirOpsForm you need to check:
a. is the current ID on AirOpsForm = the current ID of Aircraft form. If it is update the textbox's value
b. otherwise, run an UPDATE query
3. Requery Aircraft form to reflect changes.