We looked at 545 accidents during the five years between 19.Īnd once again, the regular dose of salt. Because of coding errors in NTSB reports, were sure we didnt see all of the accidents. Moreover, NTSB reports sometimes dont give final cause or the final cause may be incorrect. In some cases, then, weve read the factual reports, taken them at face value, and assigned our own apparent final cause. One of the biggest uncertainties comes from the fact that accurate data on hours flown for each model just doesnt exist. The only legitimate means of measuring one machine against another is on an accidents-per-hours-flown basis, so weve used estimates for each model provided by the Aircraft Bluebook Digest. Crossfeed drains on piper seneca series#.
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