A 'knocked circuit breaker'
Not sure what is meant by that and I can't pretend to fully understand the translation in the article.
However, if a circuit breaker was found to be out after being unable to extend the gear I fail to understand why they would not reset it.
It does remind me, however that the ancillary / additional functions of circuit breakers on the 75 /67 are not all known to the crew.
For example, did you know, on the 757 if you pull and then reset the 'speed card' circuit breakers for the left and right side simultaneously you will extend the RAT ?
One of our crews did this half way across the Atlantic,after both speed cards (vertical IAS tape on the left side of the PFD ) failed and displayed a flag
In attempting to restore operation of these instruments they reset the speed card cb's after which the RAT immediately dropped, much to their surprise.
Apparently this is how maintenance tests the operation of the RAT but no one thought to tell the Pilots.