04.R-2016-81.04

Isi rekomendasi

During the investigation, it was found that the CVR CAM channel was covered by the engine noise and the voice in the cockpit could not be heard. The other station communication and aircraft system alert or warning sound were not recorded in the CVR. The review to the wiring design found that the CVR wiring interconnection had caused in the improper CVR recording. The improper CVR recording was in accordance with the purpose of the CVR and led the important information which store in the CVR was unavailable. Therefore, KNKT recommend to review the CVR initial and annual download by the operator was examined properly to ensure that all channels were functioning properly and clearly readable during the whole aircraft operation (in all flight phase).