Originally Posted by msbbarratt
On Tuesday, Japan Airlines said maintenance engineers who were in the cockpit saw white smoke from the cockpit. When they went outside the aircraft the smoke had dispersed. On returning to the cockpit the engineers found warning lights indicating possible faults with the main battery and charger.
The sequence of events is interesting:
Observable smoke
The passing of some seconds (at least), during which the smoke clears
Then the dashboard lights up with fault indicators.
It's good that the dash did light up, but the engineers still noticed the problem before the aircraft's own systems did. Good to see the engineers had their eyes open and paying attention to detail.
Need to be a bit pedantic here, because that's not quite what it says MSB.
There is no indication of when the dashboard lights lit up, only when the engineers noticed them.