There is a video demonstration at the link below showing just how hazardous a hot oil turkey fryer can be.
Most fryers do not have thermostats and can easily overheat causing the cooking oil to combust.
Most fryers can tip over easily creating another hazard.
When lowering a frozen turkey into the fryer the difference in temperature can cause a boil over and the spilled hot oil will catch fire from the burner.
Putting too much oil in the fryer will cause a spill over when the turkey is lowered into the fryer.
Turkey fryers should always be used outdoors, away from buildings and never on wooden decks or patios.
Have a safe Thanksgiving without a turkey fryer fire.
Link