General :: Executing Shell Script With 654 Permissions Inside Another One

I have this scenario, where in I'm calling a shell script inside another shell script. The only criteria here is that the embedded script will have 654 permissions and the master script should be able to execute this embedded script. The sample code is given below:

#!/usr/bin/ksh
maindir=/usr/home01/temp/dir
bindir=${maindir}/batch/bin
${bindir}/test.ksh -d ${dblogin} -i ${datadir} -r ${filedt} > ${tmp_log}

The test.ksh which has 654 permissions is called by the main.ksh script and when I try to run it using ./main.ksh, it fails with the error "Execute permissions denied."