SEVERAL B737 MODELS 200; 300; AND 400 WERE RELEASED FOR SERVICE IN NON COMPLIANCE AFTER A RUDDER CONTROL MODIFICATION WITHOUT CATEGORY II AND AUTOLAND TESTS.

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