Document ID: chunk:federal_register_of_legislation:F2005L00586:body:0:p2
Version: federal_register_of_legislation:F2005L00586
Segment Type: other
Provision Reference: 
Character Range: 2905–6066

aircraft's AFM by incorporating the following:

   "THE FOLLOWING WEATHER CONDITIONS
   MAY BE CONDUCIVE TO SEVERE IN-FLIGHT ICING:

          * Visible rain at temperatures below 0 degrees Celsius ambient air temperature.

          * Droplets that splash or splatter on impact at temperatures below 0 degrees Celsius ambient air temperature.

   PROCEDURES FOR EXITING
   THE SEVERE ICING ENVIRONMENT:

      These procedures are applicable to all flight phases from takeoff to landing. Monitor the ambient air temperature.  While severe icing may form at temperatures as cold as -18 degrees Celsius, increased vigilance is warranted at temperatures around freezing with visible moisture present.  If the visual cues specified in the Limitations Section of the AFM for identifying severe icing conditions are observed, accomplish the following:

          * Immediately request priority handling from Air Traffic Control to facilitate a route or an altitude change to exit the severe icing conditions in order to avoid extended exposure to flight conditions more severe than those for which the airplane has been certificated.

          * Avoid abrupt and excessive manoeuvring that may exacerbate control difficulties.

          * Do not engage the autopilot.

          * If the autopilot is engaged, hold the control wheel firmly and disengage the autopilot.

          * If an unusual roll response or uncommanded roll control movement is observed, reduce the angle-of-attack.

          * Do not extend flaps during extended operation in icing conditions.  Operation with flaps extended can result in a reduced wing angle-of-attack, with the possibility of ice forming on the upper surface further aft on the wing than normal, possibly aft of the protected area.

                    * If the flaps are extended, do not retract them until the airframe is clear of ice.

                    * Report these weather conditions to Air Traffic Control."

             Note 1:  Certificate of Registration holders should initiate action to ensure that notification of this change is conveyed to any person who may operate their aircraft as pilot in command.

             Note 2:  FAA AD 96-09-13 Amendment 39-9589 refers.

             Certification for accomplishment of this Directive may be carried out:

                  a) after a copy of this Directive is included in the appropriate sections of the aircraft's AFM; and

             b) may be carried out at a minimum, by the holder of a private pilot's licence.
Compliance:  Unless already accomplished, within 30 days after the effective date of this Directive.

             Ensuring that the AFM revision includes the information contained in this AD meets the intent of this Directive.
             This Airworthiness Directive becomes effective on 14 April 2005.
Background:  This AD requires revising the AFM to provide the flight crew with recognition cues for, and procedures for exiting from, severe icing conditions, and to limit or prohibit the use of various flight control devices.
             The actions specified by this AD are intended to minimize the potential