Cessna 150J - Access Hole Installation

S-1443-1 DOUBLER
(.098) HOLE
VIEWED FROM INSIDE
WING
LOOKING DOWN
A T TOP OF LOWER
WING
SKIN.
WING SKIN (REF)
5.062 DIA
,--- S-225-4F COVER
MS20426AD3 RIVETS
S-1022Z-8-6 SCREWS
PRECAUTIONS
1. Add the minimum number of access holes necessary.
NOTE
PARTS
ARE AVAILABLE
FROM THE CESSNA
SERVICE PARTS
CENTER.
2. Any circular or rectangular access hole which is used with approved optional equipment installa-
tions may be added in lieu of the access hole illustrated.
3. Use landing light installations instead of access holes (thru 1970 Models) where possible. Do not
add access holes at outboard end of wing; remove wing tip instead.
4. Do not add an access hole in the same bay where one is already located.
5. Locate new access holes near the center of a bay (spanwise).
6. Locate new access holes forward of the front spars as close to the front spar as practicable.
7. Locate new access holes aft of the front spar between the first and second stringers aft of the
spar. When installing the doubler, rotate it so the two straight edges are closest to the stringers.
8. Alternate bays, with new access holes staggered forward and aft of the front spar, are pre-
ferable.
9. A maximum of five new access holes in each wing is permissible; if more are required, contact
the Cessna Service Department.
10. When a complete leading edge skin is being replaced, the wing should be supported in such a
manner so that wing alignment is maintained.
18-32
a. Establish exact location for inspection cover and inscribe centerlines.
b. Determine position of doubler on wing skin and center over c-enterlines. Mark the ten rivet
hole locations and drill to size shown.
c. Cutout access hole, using dimension shown.
d. Flex doubler and insert through access hole, and rivet in place.
e. Position cover and secure, using screws as shown.
Figure 18 -11. Access Hole Installation