FIRESYSOK
Quote:
To prevent an electrical malfunction (albeit rare) from becoming an electrical fire. Any piece of electronic equipment is a hazard to be the source of an electrical fire. Securing current removes some of the problem. That is why. (Yes, malfunctions that severe are very rare).
There is no checklist that I know of that would direct a crew to put a transponder into 'STBY', which incidentally, does not remove power from the unit.
Any electrical smoke/fire checklist has the crew de-power/isolate busses via the elec panel and/or circuit breakers, not individual components (unless it is definitively known as being the offending kit).
It's obvious we have a lot of armchair wannabes on this thread. Sit tight, the relevant (and knowledgeable) authorities are working overtime on this. They know leagues more than any one person on this site.
FIRESYSOK is online now Report Post
NOT TRUE. All the aircraft I am familiar with have wording equivalent to:
If smoke/fumes/fire source known:
ELECTRICAL POWER (Affected equipment) . . . .REMOVE
If practical, remove power from affected equipment by
switch or circuit breaker in flight deck or cabin.
so busbars are only de-powered when source is unknown and an immediate landing is not available.