MCCONNELLAFBI21-106 governs procedures for protecting aircraft, personnel, and facilities from severe weather.
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MCCONNELLAFBI21-106 addresses weather warnings, weather watches, wind conditions, thunderstorms, and electrical storms. It requires specified notifications, suspensions, equipment controls, aircraft protection measures, and maintenance restrictions.
Applies to: This instruction is applicable to all aircraft maintenance activities, including Air Force Reserves.
A weather warning is issued when weather condition exists that pose an immediate hazard to aircraft, resources or personnel. (paragraph 2)
A weather watch is issued when the potential exists for weather conditions that pose a threat to aircraft, resources or personnel. Watches normally precede a weather warning. (paragraph 3)
The Fuel Systems supervisor shall initiate action to ensure operations are suspended by the time the severe weather is within 10 miles for KC-46 aircraft and 5 nautical miles for KC-135 aircraft. (paragraph 3)
Personnel will not use high-reach or de-icer baskets for de-icing or any other maintenance unless otherwise approved by the MXG/CC. (paragraph 4)
Open fuel system maintenance will be suspended when winds reach 30 knots due to potential static build-up from wind on exposed tail surface (i.e., aircraft not fully enclosed in a hanger). (paragraph 4)