Bell OH-58A - Damage Limits Tail Boom and Landing Gear - Condition II

TM 55-1520-22 8-BD
Table 4-7. Damage Limits Tail Boom and Landing Gear — Condition II
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)Tail Boom 31.92-
42.59
Intercoastals
No Damage Allowed
31.92 Attachment Fittings No Damage Allowed
At Any Circumference31.87-
164.10
Skin
6.00
5
No Damage
Allowed
BS164.10-
182.40
31.87,
42.59,
79.82,
98.29,
116.84,
150.22
Bulkheads
1.00
2.0 0 5
174.10-
182.40
Bulkheads
1.05 2.10 5
174.10-
182.40
Fin Supports
0.50 1.00 5
174.10-
182.40
Gearbox Mounting
Plate
No Damage Allowed
174.10-
182.40
Bell Crank Support
No Damage Allowed
31.87-
182.40
Driveshaft Support
and Hangers
No Damage Allowed
Stabilizer 84.57 Spar 1.50 3.00 5
Fin Honeycomb Panels 4.50
5
Fin to Antenna
Attaching Flanges
2.60 5.20 5
Fin to Boom
No Damage Within 3” of Inserts
Tail Skid Tube Fitting No Damage Restrictions
Landing Gear Skid Tube 3.50 5
Fwd & Aft Cross
Tubes
1.50
5
4-47
AIRFRAME