From the TRA website: Certification Flight – Level 3 Certification flight may take place at any insured launch. The TAP member must be present and witness the certification flight. The TAP member must witness the rocket ascend in a stable manner and descend in stabilized manner controlled by the recovery system.
Post-Flight Inspection – The rocket must be presented to the certifying member for inspection. If the rocket cannot be recovered, but can be inspected in place (power lines, tree, etc...) this is acceptable. The certifying member shall inspect the rocket for excessive damage. Excessive damage shall be considered damage to the point that if the flyer were handed another motor, the rocket could not be put on the pad and flown again safely. Damage caused by wind dragging will not cause a disqualification.
That is from:
https://www.tripoli.org/Level3
The term TAP is in the singular and I was told that meant one of the two TAPs needs to witness and sign-off.
As far as confirming two TAPs approved the paperwork simple, email or phone call from one TAP to the other TAP. I believe it was setup this way because it was recognized that some fliers might be operating in isolation where
physical access to two TAPs at the same time is a hardship. Kurt
