The shaft 20 of the probe 10, as shown, also rotates in {HEAD ~ a plane} paralleling {TAIL ~ the wing span} of the aircraft as unusual attitudes such as slip, skid, spin and the like are experienced 
paralleling
The shaft 20 of the probe 10 , as shown , also rotates in { HEAD ~ a plane } paralleling { TAIL ~ the wing span } of the aircraft as unusual attitudes such as slip , skid , spin and the like are experienced
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH