3.6.7 giving some strange results for auto tune - Copter 3.6 - ArduPilot Discourse

Repeatable problem: Altitude estimation suddenly wrong, but all

How to methodically tune (almost) any multicopter using ArduCopter

EKF3 - Uncommanded periodic high throttle out in PosHold - Copter

How to methodically tune (almost) any multicopter using ArduCopter

How to methodically tune (almost) any multicopter using ArduCopter

Tune in auto is very aggressive compared to stabilise - Copter 4.3

Copter 4 autotune problem - Copter 4.0 - ArduPilot Discourse

AutoTune — Copter documentation

AutoTune: failing to level, manual tune may be req - Copter 4.1

Strange behavior in loiter mode under version 4.3.6 - Traditional