Technical data

13773-001
57-50
Page 1
FLIGHT SURFACES
1. DESCRIPTION
The flaps are mounted to the trailing edge of each wing between the inboard end of the ailerons and the
fuselage. The ailerons are located near the wing tips and hinge to the aileron spar to become part of the
trailing edge of the wing. The ailerons and flaps are made from aluminum.
2. MAINTENANCE PRACTICES
A. Aileron Assembly
(1) Removal - Aileron Assembly
(a) Remove wing tip. (Refer to 57-20)
(b) Cut safety wire securing aileron hinge bolts to flat actuation fittings on each end of the aile-
ron.
CAUTION: When removing aileron hinge bolts, exercise caution to prevent aileron from
falling and becoming damaged. Exercise caution to prevent the aileron from
being supported by only one bolt, as this could damage the bolt, hinge, and
aileron.
(c) Remove the outer aileron hinge bolt and thick washer from the outside edge of the hinge.
Account for a thin washer (located next to the inside edge of the outer hinge) and two thick
washers.
(d) Remove the inner aileron hinge bolt, washer, and spacer from the inner hinge. Remove
aileron.
(2) Installation - Aileron Assembly
(a) Acquire necessary tools, equipment, and supplies.
(b) Insert the actuation arm pin into the spherical rod end on the actuation pulley.
(c) Place the inner aileron hinge bolt, washer, and spacer into the inner aileron hinge.
(d) Place the outer aileron hinge bolt and thick washer into the outside edge of the outer aile-
ron hinge. Place the thin washer (next to the inside edge of the outer aileron hinge) and
two thick washers next against the inside edge of the outer aileron hinge.
(e) Tighten both aileron hinge bolts to 20 - 25 inch pounds.
(f) Safety wire both aileron hinge bolts to the flat actuation fittings. (Refer to 20-50)
(g) Install wing tip. (Refer to 57-20)
(3) Inspection/Check - Aileron Assembly
(a) Lower flaps to full down position.
(b) Remove wing tips. (Refer to 57-20)
(c) Verify proper hinge bolt installation and torque on outboard hinge. (Refer to 57-50)
(d) Verify proper hinge bolt installation and torque on inboard hinge. (Refer to 57-50)
(e) Verify proper installation of safety wires and cotter pins on all fasteners.
(f) Install wing tips. (Refer to 57-20)
(g) Raise flaps to full up position.
(4) Adjustment - Aileron Balancing
Description P/N or Spec. Supplier Purpose
Safety wire MS20995C32 Any Source Retain part
30 Nov 2000