Appendix E—STC Installation Documentation
PAGE 52
M3 GPS INSTALLATION MANUAL Revision D
NOTES:
1. Cabin-top hole location for Northstar AN120 GPS antenna connector
1.55 inches aft of front spar carry-thru and on centerline.
2. Install AN120 with four AN570 #6-32 machine screws and four
AN442 #6-32 elastic stop washers.
3. Insert AN960 #6 flat washers between fuselage and AN442 nuts.
4. Torque AN442 nuts to 12 –15 inch-pounds.
5. Follow recommended methods, techniques, and practices found
within FAA Advisory Circular 43.13-2A, Chapter 3.
NORTHSTAR TECHNOLOGIES
30 SUDBURY ROAD, ACTON, MA 01720
DRAWING TITLE: NORTHSTAR M3 GPS INSTALLATION
DRAWING NO.: 19960110 SHEET: 4/4 REV: B
DRAWN BY: J.M.M. APPROVED BY: T.L. PEARSALL
DATE: 07/01/96 SCALE: N/A FILE: AIRFRAME.DWG
C
L
Drill-four places
Number 41 drill bit
Counterbore
Drill size "F"
Northstar AN120
GPS antenna
(shown eight times
scale size for clarity)
CABIN TOP
(REF.)
F
O
R
W
A
R
D
AN120 GPS ANTENNA INSTALLATION DRAWING FOR NORTHSTAR M3 GPS SYSTEM
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