APU use
Quote: "I can't recall seeing an SOP stating that we must shut down the APU on every turnaround, and even if there was, common sense should prevail"
Well I am a regular traveller (2x per month) on a -300 route to southern France. On to stand GPU in, APU OFF. Pax swelter, CC swelter on the T/R, oncoming pax being toasted in the finger as the incoming pax leave. On two occasions have had to divert to Marseilles, same deal No APU whilst crew talk to Mission control.
Perhaps the common sense store was closed on these days?