Wing Spar Repair - Cessna 177 SERIES Service Manual

TRIM OUT DOUBLER-2024-T4
FILLER
-
2024-T3
DAMAGED \
ALCLAD .020 /
ALCLAD
063
p
ALC LAD .
063
AREA
: -: :' '::t .
-- FILLER - 2024-T3
ALCLAD 090
WING SPAR
090 x 360
FILLER-
ALCLAD .016
3 VERTICAL ROWS
RIVETS EACH SIDE
N* LE 4 A DOF DAMAGED AREA
1.06 x 2. 06 x .090 (EQUAL SPACING)
1/4" EDGE MARGIN ONE EXTRA ROW MINIMUM 6 EXISTING
(TYP) OF RIVETS IN RIVETS PER ROW EACH
EACH ANGLE
SIDE OF DAMAGED AREA
IN EACH ANGLE
okh NOT\E
MS20470AD4 RIVETS
NOTE |'::" (TYP)
This repair applies to the main spar from
A
station 146 outboard, and the fuel bay spar
outboard of station 84. Factory approval
of proposed repairs is required inboard of
station 146 on main spar or inboard of sta-
tion 84 on fuel bay spars. T W
TWO ROWS OF RIVETS
IN FILLER (MINIMUM).
MAKE RIVET SPACING IDENTICAL
/-S~ ' '\TO REPAIR SPACING FOR LARGER
A
FILLERS.
_ ORIGINAL PARTS
.'-'D REPAIR PARTS
A-A
REPAIR PARTS IN CROSS SECTION
Figure 18-7. Wing Spar Repair
Change 1
18-25