P92 Echo Super
Maintenance Manual
15
Revision Date: 10-29-2007
Revision Number: 3.01
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3.4.3
Aircraft alignment
Figure 3-2 Alignments
3.4.4
Datum
Datum
Distances in mm
Inches
A-B
4690
"
20
184 6”
B
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SPINNER BACK
PLATE UPPER
POINT
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A
A '
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LAST RIVET ON THE LOWER
SIDE OF THE REAR WING
SPAR
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C
C '
FIRST RIVET BETWEEN THE
TUBULAR SPAR AND THE
OUTERMOST RIB
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UPPER/REAR RIVET ON ALUMINIUM SKIN.
i.e. The rivet in common between the fin's rear
spar and the upper rib.
G
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C
C '
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F
F '
Main Wheels
Axle Line
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A
‟
-B
4690
"
20
184.6”
A-C
4140
"
20
163”
A
‟
-C
‟
4140
"
20
163”
C-G
1800
"
20
70.87”
C
‟
-G
1800
"
20
70.87”
F-F
‟
1880
"
20
74”