The angle of the pelvic belt should be within the preferred zone
of 30 to 75 degrees to the horizontal OR within the optional
zone of 45 to 75 degrees to the horizontal.
Steeper side-view pelvic belt angles are especially important if
the pelvic belt is intended to be used for postural support in
addition to occupant restraint in a frontal crash. Steeper angles
will reduce the tendency for a vertical gap to develop between
the user and the belt due to compliance of seat cushions and
belt movement, thereby reducing the tendency for the user to
slip under the belt and for the belt to ride up on the soft
abdomen during normal use
Steeper belt angles also reduce the tendency for upper-torso
belts to pull the pelvic belt onto the abdomen during frontal
impact loading.
DO NOT position belts OUTSIDE of armrest, wheels, etc.
DO position belts INSIDE of armrests, wheels, etc.
1. The pelvic belt should be worn low across the front of the
pelvis in contact with the tops of the thighs near the thigh-
abdominal junctions.
2. Upper-torso belts should fit directly over, and in contact
with, the middle of the shoulder.
3. The junction of the shoulder belt and pelvic belt of the
three-point belts should be located near the hip opposite
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6 Transport - ANSI/RESNA WC-4 Section 19
Summary of Contents for Captain's Seat
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