|Posted: Mon Apr 23, 2018 9:00 am Post subject: Z12 contactor failure (CORRECTION)
In-fight contactor failure is exceedingly rare.
Smoke in the cockpit probably has a higher degree
of probability . . . in which instance you may
wish to shot the whole system down anyhow.
Any of you who have attended my weekend seminars
may remember this slide:
The last 200-300 hours of my flying days were
carried out with these three items in my flight
bag. Since I flew nothing but rentals, I had little
insight as to the history of electrical/electronics
systems. I was prepared to continue flight to intended
destination with the master switch OFF.
Indeed, the performance of these $100 hand-held
gps receivers so exceeded the panel mounted stuff
that those last hundreds of hours were flown with
DUAL gps receivers 'mounted' to the glare-shield
and windshield with little blobs of windshield
sealant. Never touched a VOR receiver or even
the panel mounted GPS receivers again.
As I describe in Chapter 17 of the 'Connection,
system reliability has far more to do with pilot
skills and careful crafting of a Plan-B than it
does on any selection of system hardware. The
carefully crafted architecture and pilot's personal
bag of tricks strives for failure tolerance . . . not
failure proofing. The later cannot be achieved.
Bob . . .
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