TM 1-1510-218-10 8A-27 uncontrollable  skid.    Ice  accumulation  on  the  aircraft will   result   in   higher   stalling   airspeeds   due   to   the change  in  aerodynamic  characteristics  and  increased weight of the aircraft due to ice buildup.  Approach and landing airspeeds must be increased accordingly. 8A-60.  ICING (SEVERE). a.     The   following   weather   conditions   may   be conducive to severe in-flight icing. 1.   Visible  rain  at  temperatures  below  0  C ambient air temperature. 2.   Droplets  that  splash  or  splatter  on  impact at  temperatures  below  0   C  ambient  air temperature. b.    The following procedures for exiting a severe icing  environment  are  applicable  to  all  flight  phases from takeoff to landing. 1.   Monitor     the     ambient     air     temperature. While severe icing may form at temperatures as cold as –18 °C, increased vigilance is warranted at temperatures  around  freezing  with  visible moisture present. 2.   Upon  observing  the  visual  cues  specified in the limitations section of this manual for the identification of severe icing conditions, proceed as follows. a.   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 aircraft has been certified. b.   Avoid abrupt and excessive maneuvering that may exacerbate control difficulties. c.   Do not engage the autopilot. d.   If   the   autopilot   is   engaged,   hold   the control wheel firmly and disengage the autopilot. e.   If an unusual roll response or uncommanded roll control movement is observed reduce the angle-of-attack. f.    Do  not  extend  flaps   during   extended operation in icing conditions. Operations    with   flaps    extended    can result in a reduced 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. g.   If the flaps are extended, do not retract them until the airframe is clear of ice. h.   Report  these  weather  conditions  to  air traffic control. Section VI.  CREW DUTIES H 8A-61.  CREW/PASSENGER BRIEFING. The  following  guide  should  be  used  in  accomplishing the  required  passenger  briefings.    Items  that  do  not pertain to a specific mission may be omitted. 1.   Crew introduction. 2.   Equipment. a.   Personnel to include ID tags. b.   Professional (medical equipment, etc.). c.   Survival. 3.   Flight data. a.   Route. b.   Altitude. c.   Time en route. d.   Weather. 4.   Normal procedures. a.   Entry and exit of aircraft. b.   Seating and seat position. c.   Seat belts. d.   Movement in aircraft. e.   Internal communications. f.    Security of equipment.