Wow, 690... absolutely fantastic shot with the star trails! Nicely done!
If I'm not mistaken, MMA fitted some (or maybe all?) of the B23s with auxiliary power units. They did that with some or all of their B39s too. Of course, one wonders whether MMA actually maintained the APUs toward the end, given the company's shall-we-say "unconventional" maintenance practices during their final couple of years...
MEC407
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