Hi kinksolomon12,
I would like to share with you some thoughts about your scenario "Flying from outside to covered patio".
For me this scenario has some particularities and potential risks if you start to fly in P-GPS mode so let's first keep focus on the fly mode, and consider obstacle avoidance as secondary question.
When entering in the patio the craft might sudden miss satellites - depends the nature of covered structure - and then automatically switch to Atti mode. Be prepared with that behavior as he will not tell you in advance!
Learning to fly in Atti mode is highy recommended generally speaking. Pilot must be able to control the craft in Atti mode - bear in mind the P4 has authority to downgrade the flying mode if conditions are not satisfactory.
Also magnetometric sensors might be disturbed by the structure inside the patio, but depends what's in there. The P4 might suden behave differently as sensors reporting different values.
To verify in advance the conditions you could first walk inside the patio with the bird without flying and watch the fly mode status in Go App. But that's not giving any insight about the sensors and P4 flight attitude, as well not exactly the same conditions: personally if ensure I start directly in Atti mode and that's it!
For the obstacle avoidance vs fly mode kindly find this information:
Obstacle Avoidance - P4
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