36301document1579ESA_474(3)_-_ELEMEN_REKABENTUK_HELIKOPTER_APR-MEI_06.pdfapplication/pdf31199292013-07-13 00:40:18http://eprints.usm.my/881/1/ESA_474%283%29_-_ELEMEN_REKABENTUK_HELIKOPTER_APR-MEI_06.pdf