interception from above
about glide slope interception from above, it is included in A320 training manual, contains many steps, and crew are trained to use it by memory, we have to blance lower MCP altitude, arm approach mode if not already done, and engage initially vertical speed of 1500 ft/mn, it is very helpful to be familiar with these steps, i saw many times pilots hesitating which step must be done first (v/s engagement or resetting MCP alt...) and waiste a valuable time specially when intercepting glide at low altitude, so it may happened to the turkish crew to miss momentarily flight parameters monitoring and FMA indication when trying to catch glide slope.