Many of you may be following this topic, but there have been some new developments in the MD-11 wiring problems that may have bearing on the SR 111 crash. I'm summarizing from a news report:
From inspections of existing MD-11s and from HB-IWF wreckage, there is evidence of serious wiring problems near 1) a circuit breaker panel located
in the cockpit ceiling 2) the entertainment system used by SR. The breaker panel was the subject of a directive in 1993 that required extensive handling of the wiring near it. It appears that some of this work may have lead to wire and/or insulation damage. Also, it seems that some of the existing SR entertainment units, which are now turned off, show some sloppy work and questionable practices -- using wrong tools, mixing hard and soft insulation so that the latter is worn off, sharp bends, etc. The implication is that the Interactive Flight Systems company was responsible for this. But there was a mysterious statement to the effect that 'other wire work was done in this area, not related to the entertainemtn unit', or something like that.
There was no mention about just what was found on various other airlines' MD-11s. They all would have had to do the circuit panel mods, and I wonder if,
for example, AA and FedEx ships showed some problems. If so, they probably don't want to publicize it.
Finally, the investigators stopped short of saying just what wiring or system caused the crash --- but the prevailing opinion was that it was probably one or both of these problem areas. At least it is consistent with some of the charred wire in the wreckage.
CV990, the Maserati of the skies!