Mostly good was not good enough today

- doubly flaming arrival (short of) Torrence this morning...
I had flown the ILS RWY 29R into KTOA and the published missed, though I had severely botched the entry into the hold at LIMBO due in part to a bad choice of navigation settings. I'm trying to get used to PFD navigation, and I programmed the LAX VOR into the the GPS to help me get to LIMBO (the published missed uses the LAX 170 radial to get to LIMBO). In retrospect, I would have had it much easier just programming LIMBO into the GPS...)
After getting Socal's help in getting to the hold (good choice), I was on vectors to the ILS again and had recovered my head and felt back ahead of the airplane. I was IMC, but then I noticed that the clouds looked funny. Yes, they were *inside* the cockpit. I had been cleared for the approach and was about to intercept the localizer.
I'm flying an interesting plane of Jason Chandler's: the XHawk, which is a single engine, complex piston that can cruise 160+ (helps in adding workload to practice flights) but which has a slow stall speed, so I can slow down the action on approach if I want to. In one of his comments on the instrumentation, Jason writes:
It has the avidyne pfd's, but it also has the actual requisite minimum standby gauges. Ironically.. artificial horizon is not a required instrument. observe turn from turn coordinator gyro, and magcompas. vsi is not, altimeter is. note descent rate by the direction on the altimeter. required panel gauges. asi, alt, turn coord, compass. aats it.
With a cabin fire, I should have turned the avionics off right away and gone to standby instruments to see if the smoke stopped. I didn't feel I had the luxury of turning off the avionics and the battery/generator, because without a vacuum-driven artificial horizon, the only bank information would have been via the whiskey compass, which wouldn't be helpful enough. The turn coordinator is electric, so shutting off battery/generator would have taken that away, too.
What I did instead was continue the descent (with avionics and battery/generator on) on the ILS until I broke out under the clouds, which I knew would happen from my previous approach. By this point, the smoke was very thick, and visibility was quite poor. I told the tower I was going off radio and looked down to turn off the avionics and battery/generator (top three switches on the image below):

- XHawk switches
- switches.png (97.68 KiB) Viewed 8486 times
Not being intimately familiar with the switch layout, not having gone through emergency scenarios in my mind with this aircraft, and unable to just glance down in the sim (I had to swing the whole view down), I was heads down for about four seconds. Not having trimmed well (I had been unable to do so while peering through the smoke to catch glimpses of the PFD), these four seconds were not available. I clicked the sim view up just in time to see my flaming demise.
....
After I recover a bit, I am going to try to set up some emergency scenarios to think through and practice. Or maybe I'll tweak the x-plane settings to make random failures at an abnormally high rate...that's one way to come up with emergency scenarios.
- Doug