TM 55–2840–254–23
4–86 Change 6
4–18 INSPECT FIRESHIELD SECTION
4–18
INITIAL SETUP
Applicable Configurations:
All
Tools:
Technical Inspection Tool Kit,
NSN 5180–00–323–5114
Fluorescent Penetrant Inspection Method
Materials:
None
Personnel Required:
68B30 Aircraft Powerplant Inspector
Equipment Condition:
Off Engine Task
1.
Inspect fireshield section (1).
a.
There shall be no nicks or pits that result in
holes.
b.
There shall be no dents.
c.
There shall be no bends or warpage which
cause deformation after installation.
d.
Inspect bolt hole areas (2). Inspect for
cracks using the fluorescent penetrant in-
spection method. For the latest inspection
procedure, refer to TM 1–1520–253–23,
Technical Manual Aviation Unit Mainte-
nance (AVUM) and Aviation Intermediate
Maintenance (AVIM) Manual Nondestruc-
tive Inspection Procedure for the CH/
MH–47 Helicopter Series.
(1) There shall be no cracks (3) longer
than 1/4 inch.
(2) There shall be no cracks wider than
1/32 inch.
(3) There shall be no converging cracks
(4).
FOLLOW–ON MAINTENANCE
None
END OF TASK
