Bell OH-58A - Page 81

TM 55-1520-22 8-BD
Table 4-3 . Dam age Limits Aft Fuselage — Condition I (Cont)
DAMAGE LIMITS
LOCATION
CAP / FLANGE SKIN / WEB
COMPONENT /
MEMBER
FS WL BL
ELEMENT
CD’ CL’ N WL’ N
NOTES /
CAUTIONS
(D’=N x CL) (D’=N x WL)Anti-Torque Support 179.92-
181.62
58.27-
73.37
0.88R
Support and Fittings
No Damage Allowed
Engine Pan 130.00-
167.00 71.74
14.12L-
14.12R
Horizontal Stiffeners
1.00 2.00 10
130.00-
167.00 71.74
14.12L-
14.12R
Web & Drain
No Damage Allowed
130.00-
167.00 71.74
14.12L-
14.12R
Spot Weld Damage
1/3 of Welds May Be Damaged
130.00-
167.00 71.74
14.12L-
14.12R
Doublers, Splices
Vertical Stiffeners
0.75 1.50 10
Canted Web 130.00-
192.84
51.67-
59.98
25.00L&R-
7.00L&R
Stiffeners
1.15 2.30 10
130.00-
192.84
51.67-
59.98
15.00L&R-
7.00L&R
Web
4.75
5
Shear Web
192.84-
206.35
60.00
7.00L&R-
4.00L&R
Stiffeners
0.15 0.30 10
192.84-
206.35
60.00
7.00L&R-
4.00L&R
Webs
3.00
5
Electrical
Compartment Floor
130.00-
167.00
29.47-
34.46
Inserts
Damage Allowed to One Insert
in Each Group of Four
130.00-
167.00
29.47-
34.46
Honeycomb
10.00 5
No Damage Within
2” of Effective
Inserts
Bulkheads 142, 154, 167,
179, 192
Frame Section
0.75 1.50 10
142, 154, 167,
179, 192
Stiffeners, Clips
Doublers
0.50 1.00 10
142, 154, 167,
179, 192
Splices
No Damage Allowed
4-37
AIRFRAME