TCAS on Airbus A340

Date:         21 Jan 97 01:32:27 
From:         "L.M.N. Peiris" <lmnp1@eng.cam.ac.uk>
Organization: Cambridge University Engineering Department
Followups:    1
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Could anyone tell if the traffic alert and collision avoidance systems
(TCAS) is fitted to all A340 aircrafts at manufacturing or whether it is
an option available for the airlines?