FAA announces stall-warning malfunction in icing conditions
January 26, 2011, 05:08 pm
The Federal Aviation Administration has released a special airworthiness information bulletin advising pilots that stall-warning systems on pre-2000 aircraft may malfunction in icing conditions, according to the group.
After analyzing 25 years worth of icing-related accidents that did not result in fatalities, the FAA found a number of incidents in which pilots noted that their stall warning systems had not activated. In fact, in some cases, pilots experienced buffet and shudder, but mistakenly attributed them to some other problem with the plane, believing the system would have activated if a stall was imminent.
Airplane designs certified after 2000 have been tested for stalling in icing conditions. However, the FAA believes that planes constructed earlier than this year may still stall without the pilot being aware. The group has advised that pilots look up their plane manual's specific instructions for stalling. If none are provided, pilots should increase airspeed by 25 percent up to the maximum speed of the plane, and reduce the angle of attack and apply full torque in response to buffet or shudder. The SAIB also provides advice on approach, landing and autopilot in both regular and severe icing conditions.
Flying in winter adds additional danger to an already potentially hazardous recreation. Life insurance for pilots is essential for providing for their families in the event of a fatal accident.
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