Arming requirements for auto deployment are aircraft in the air,aircraft speed greater than 80KTS and N3 on both engines less than 47% (RB211 ).
The RAT will extend whenever the manual deployment switch is depressed. You will get an amber unlocked when away from the stowed position and a Green Press indication when the RAT has run up to speed and producing pressure > 1275 psi. . .(fwd speed only !!)
Would'nt recommend you try this for fun ! The RAT comes out quick enough on the ground to take your head off if standing in the way !
[ 27 February 2002: Message edited by: Golden Rivet ]</p>