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. One of the biggest uncertainties comes from the fact that accurate data on hours flown for each model just doesnt exist. In some cases, then, weve read the factual reports, taken them at face value, and assigned our own apparent final cause. Moreover, NTSB reports sometimes dont give final cause or the final cause may be incorrect. Because of coding errors in NTSB reports, were sure we didnt see all of the accidents. We looked at 545 accidents during the five years between 19.Īnd once again, the regular dose of salt.
Crossfeed drains on piper seneca series#
We think the best you can do is analyze the twin-engine accident record across a range of models, try to determine how and why twins crash, then decide for yourself whether the risks of flying a twin are more or less manageable than those involved with flying a single.Ĭontinuing our examination of accident records for individual models, weve reviewed the NTSB reports for six twins, ranging from the Piper PA-23 Apache/Aztec series to Cessnas popular 421 cabin-class cruiser. We emphasize average as a means of noting that not all owners pursue the recurrent training required to make them competent in twins. In the end, however, we think there are too many variables to say with assurance that an extra engine really does improve the safety margin for the average owner-pilot. If we could answer this question, we could also turn lead to gold and all of our computer hardware would actually play when plugged. I aim to undercut everybody else on Ebay selling equivalent parts, and cleaning or spraying with cute green primer to make it seem new would hinder that.I accept trades, so if you have a lot of aviation parts lying around, even if you don?t think they?re worth anything, message me and let me know what you have.Check my feedback, and bid with confidence.Like the speed of light and the fact that the best parking spaces are already taken, one of the constants in the universe is this imponderable question: Is a twin safer than a single? Does having two motors really add measurably to the safety margin or is it, like so much else in GA, undiluted marketing hype? If you are in a hurry, just let me know and we will put it at the front of the line and try to ship it ASAP.As with all aviation parts the installer is responsible for determining airworthiness per FAA regulations.I take lots of pictures and try to show any flaws that the parts might have, and I describe everything the best I can so as not to disappoint buyers.I don't spend a lot of time cleaning or priming parts trying to make them look better because I'd have to charge more. International shipping is charged at actual cost, as are shipments to Alaska and Hawaii.Sometimes due to delicate items, large cumbersome items, busy work schedule or the fact that my high school son packages everything up and ships it (he's using the money I pay him to get his private license), it may take longer. That said, I usually ship in 2 to 3 days. The o-rings cost pennies to rebuild.I PRICE TO SELL!Because Ebay gives you a bad seller rating if you miss your shipping times, I use 10 days as my official shipping time to be conservative. Same for main fuel tank and the aux tank, the recurring AD requires rebuilding these from time to time to keep them smooth. These Scott 4600 fuel valves are used in the Piper Aztec and the early Apache. Item: 174774631321 Scott 4600 Fuel Valve, Piper PA23 Aztec, Early Piper Apache.
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