Assertion: rotor's position | /r/HasProperty | normal upright
Facets:
Source sentences:
text: When bench testing any of the HAM series rotors or the T2X (Tailtwister) rotor, the rotor must be either in its normal upright position or inverted (upside down) to test.
text: When bench testing any of the HAM series rotors or the T2X (Tailtwister) rotor, the rotor must be either in its normal upright position or inverted (upside down) to test.