General information:
No longer really that relevant, since the 9-0-9 preliminary investigation revealed no evident fuel mixup*. However, acording to this (dated 15 Oct 2019) there was a fatal at the Kokomo Indiana airport due to a fuel mixup:
https://www.avweb.com/aviation-news/misfueling-likely-cause-of-recent-aerostar-crash/Since the 9-0-9 crash, this old groundlubber has been wondering how come they didn't use different mating nozzles for the different fuels.
Well, duh, they do, but this popped out at me from the article cited in this post:
The normal checks and balances are bolstered by the design of Jet A fuel nozzles, which are built to not fit into the filler ports of piston aircraft. Nevertheless, according to the NTSB prelim, “The [FBO] employee said that he was able to orientate [sic] the different shaped nozzle (relative to the 100 low lead fuel truck nozzle) from the Jet A fuel truck by positioning it 90 degrees over the wing fuel tank filler necks and about 45 degrees over the fuselage filler necks. He said the he initially spilled about one gallon of fuel during refueling and adjusted his technique so subsequent fuel spillage was minimal.”
Italics mine.
Hooooleee excrement !
Attention to detail, or lack thereof, is a killer in this industry.
And sometimes, even protective details can be defeated by a dedicated jerk.
Terry
* "According to the NTSB’s initial report [on the 9-0-9 crash]: 'On the morning of the accident flight, an airport lineman at BDL assisted the loadmaster as he added 160 gallons of 100LL aviation fuel to the accident airplane. The lineman stated that the accident airplane was the first to be fueled with 100LL fuel that day.'"