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Originally Posted by Doug Taylor  Do the newer generation 73's work the same way? I've only dealt with the -200's. |
Yes, they still have the isolation valve that enables isolating either side. On the new 737s (-700, -800 and -900) you can run both packs from the APU which you couldn't do on the classics. If you choose to on the newer 73s, you can close both engine bleeds and run both packs from the APU - then it wouldn't matter what engine you taxied out on as you would have two packs running. The preferred method is to run the left pack off the APU and the right pack off the #2 engine as you get significantly more airflow from two independent sources.