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COCKPIT warning systems on seven Dragonair planes are to be corrected after it was discovered wrong information caused the emergency landing at Kai Tak two weeks ago.

  The Airbus A320 was forced to abort two attempts at landing in bad weather before landing heavily and skidding off the runway on June 6.

  A spokesman for manufacturer Airbus Industrie said yesterday all 46 airlines that used the plane had been notified of the problem and their pilots told to ignore certain warnings until the system could be corrected.

  He said the company would quickly input revised warning information to ensure there was no repeat of the Kai Tak accident.

  The Civil Aviation Department is believed to be satisfied that the Dragonair A320 does not pose a safety risk after tests on the airline's seven Airbuses.

  However, no one was able to comment while the investigation is still officially continuing.

  Airbus Industrie in Toulouse, France, also tested its own A320 and decided that warnings which were initially programmed into its computer were not the most ''appropriate'' in circumstances similar to flight KA323.

  ''The problem is that the information given in the warning was incorrect,'' the Airbus spokesman said. ''We flew an A320 [in Toulouse] in similar conditions [to the Kai Tak incident] and decided the warning that was given was not the most appropriate.''   The spokesman said the problem occurred after wind shear caused the plane to lock both wing flaps at full extension - a built-in safety mechanism.

  Although this was the correct flap position for landing, the plane's computer issued a cockpit warning to move the flap control to an intermediate position.

  But when the pilot did so, the plane became more sensitive and over-compensated for turbulence resulting in a rocking motion on approach.



Changes after Kai Tak mishap