This video proves an aircraft Artificial Horizon will rapidly correct alignment errors in roll and pitch.
It has self correcting mechanisms that will constantly keep it aligned to the local level.
The corrections occur at the rate of 2-4 degrees per minute.
For the Gyro to remain level as an aircraft flys over the curved Earth at 450 Knots only one degree of correction is needed every 8 minutes.
The correcting rate of this gyro means it would work just fine even travelling at the speed of the SR-71.
The self aligning mechanism is what keeps it showing level as the aircraft follows curvature.
This video fully debunks the Flat Earth claims that an aircraft gyro is evidence of a Flat Earth.
Explanation of pendulous vanes (the correcting mechanism in this gyro)
The model is an R.C ALLEN RCA26BK-12 Gyro.
The operation manual is here.