Originally Posted by Empty Cruise
1) If a fire broke out inside the aircraft, you had - on average - 2 min. to put it out, or it would become uncontrollable and...
2) if a fire became uncontrollable, you had on average 14 additional minutes before chances were that nobody would walk away from it.
Russian Tupolev 154 lost all hydraulic systems after 4 minutes since engine fire alarm had triggered.
As there is no mechanical control backup the plane has crashed in 2nm from runway threshold.
So the 16 minutes is the only approx value.
Have fire on board - LAND ASAP.