![]() In such circumstances, unless the smoke can be cleared, the crew are unable to control the aircraft. An electrical fire in an aircraft typically generates a lot of thick white smoke which can render the flight crew blind, unable to see the instruments or see out of the windows. Smoke can reduce visibility within the aircraft. The consequence of such a delay may be that the fire becomes non-survivable before the aircraft has an opportunity to land. ![]() A hidden fire may initially be difficult to confirm and the crew may be slow to initiate an emergency landing.The time delay may allow the fire to take hold and do considerable damage to the aircraft. Hidden fires are difficult to locate and access in order to fight them.This is the most dangerous type of fire for 2 reasons: Hidden Fire A hidden fire may be detected by onboard fire detection systems or by the crew or passengers noticing smoke or fumes, a hot spot on a wall or floor, or by unusual electrical malfunctions particularly when the systems are unrelated.As with an engine fire, it is still advisable to land the aircraft as soon as possible and carry out a detailed examination of the cause of the fire and any damage. A fire within the cabin will usually be detected early and be contained by the crew using onboard fire fighting equipment. Where an engine fire has been successfully contained, there is still a risk that the fire may reignite and therefore it is still advisable for the crew to land the aircraft as soon as possible and allow fire crews to carry out a visual examination of the engine. an explosive breakup of the turbine), the nature of the fire is such that onboard systems may not be able to contain the fire and it may spread to the wing and/or fuselage. ![]() An engine fire is normally detected and contained satisfactorily by the aircraft fire detection and suppression systems. ![]() UK CAA Paper 2002/01, Hidden Fires - Time to Become Non-Survivable (page 6, see Further Reading) Types ![]()
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