▁a ▁result , ▁the ▁pilot ▁will ▁apply ▁right ▁rud der ▁and ▁un know ingly ▁re - enter ▁the ▁original ▁right ▁spin . ▁Cross - check ing ▁the ▁air plane ' s ▁flight ▁instruments ▁would ▁show ▁that ▁the ▁air plane ▁is ▁still ▁in ▁a ▁turn , ▁which ▁causes ▁sens ory ▁conflict ▁for ▁the ▁pilot . ▁If ▁the ▁pilot ▁does ▁not ▁correct ▁the ▁spin , ▁the ▁air plane ▁will ▁continue ▁to ▁lose ▁alt itude ▁until ▁contact ▁with ▁the ▁terrain ▁occurs . ▁ ▁Gra vey ard ▁spir al ▁▁ ▁The ▁gra vey ard ▁spir al ▁is ▁character ized ▁by ▁a ▁pilot ▁who ▁mistaken ly ▁bel ieves ▁they ▁are ▁in ▁wings - level ▁flight ▁when ▁the ▁plane ▁is ▁in ▁fact ▁in ▁a ▁bank ing ▁turn , ▁and ▁not ices ▁descent ▁indicated ▁on ▁the ▁plane ' s ▁alt imeter . ▁The ▁sens ory ▁dis orientation ▁of ▁returning ▁from ▁a ▁prolong ed ▁bank ing ▁turn ▁to ▁wings - level ▁flight ▁can ▁cause ▁the ▁pilot ▁to ▁re - enter ▁the ▁bank ing ▁turn , ▁as ▁in ▁the ▁gra vey ard ▁spin ▁ill usion . ▁While ▁the ▁plane ▁continues ▁in ▁the ▁turn ▁and ▁begins ▁to ▁indicate ▁a ▁loss ▁of ▁alt itude , ▁the ▁pilot ▁will ▁try ▁to ▁correct ▁the ▁loss ▁of ▁alt itude ▁by ▁" pull ing ▁up " ▁on ▁the ▁plane ' s ▁controls . ▁Att empt ing ▁to ▁adjust ▁the ▁controls ▁in ▁this ▁way ▁will ▁have ▁the ▁effect ▁of ▁tight ening ▁the ▁radius ▁of ▁the ▁turn ▁and ▁eventually ▁quick ening ▁the ▁rate ▁of ▁descent ▁until ▁the ▁pilot ▁is ▁vis