NTSB Issues Deicing Safety Alert

The directive also warns that ice buildup on pitot tubes can lead to instrument failure, impacting readings for airspeed, altitude, and vertical speed.

Thursday, September 12, 2024 at 04:21 PM ET

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The NTSB safety alert warned of the dangers of flying in icing conditions, and the adverse effects of airframe and propeller icing on aircraft performance. [FLYING file photo]

Key Takeaways:

The NTSB issued Safety Alert SA-097 to remind pilots of the severe dangers of icing, which can significantly degrade aircraft performance, increase stall speed, and lead to instrument failure.
The alert clarifies that modern deicing boots (post-1960 aircraft) are not prone to "ice bridging," advising pilots to activate them promptly at the first sign of ice accumulation.
Pilots are strongly urged to adhere to their aircraft's operating handbooks for specific deicing procedures, as non-compliance has been a factor in past accidents involving loss of control.

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As winter approaches, the National Transportation Safety Board (NTSB) has issued Safety Alert SA-097, reminding pilots about the dangers of flying in icing conditions—namely the adverse effects of airframe and propeller icing on aircraft performance.

SA-097 emphasized that “as little as 1/4-inch of wing-leading edge ice accumulation can increase the stall speed by 25 to 40 knots and cause sudden departure from controlled flight.”

Amelia Walsh

Amelia Walsh is a private pilot who enjoys flying her family’s Columbia 350. She is based in Colorado and loves all things outdoors including skiing, hiking, and camping.