Table of Contents
Advertisement
(3) Inspect all structures using
bright light and magnifying glass.
Determine the path entry of the projec-
tile to aid in finding structures that
may have embedded fragments.
embedded objects and record them on DA
Form 2404, Figure 4-2.
Inspecting for Fire Damage.
e.
Inspect for fire damage by checking for
discoloration of the structure.
discoloration will indicate that the
member has been exposed to high tem-
perature.
Conduct a hardness test to
determine if the temperature of the
material has changed.
heat damage, record the information on
DA Form 2404 and clearly mark the
member.
Detecting Structural Damage in
f.
Adjoining Areas.
(1) Secondary damage can be the
result of severe overstress, explosive
blast, or maneuvering loads imposed on
damaged structures. Inspect the
airframe near the projectile damage for
evidence of secondary damage.
(2) Inspect the skin for creases,
wrinkles, and dents.
for chipped or flaked paint, looseness,
and serviceability.
are evident, remove access panels and
doors to inspect members for cracks and
structural changes.
Inspecting for broken and missing
fasteners. Inspect fasteners for
security, shear, pull-through, tear-out,
and elongated fastener holes.
possible, inspect fasteners from both
sides.
Inspecting for Delaminations.
h.
Inspect honeycomb structures for voids
and delamination using the coin tapping
method.
Mark
Any
If test indicates
Inspect fasteners
If these conditions
Where
i.
Marking and Recording Damage.
(1) Record all detected damage.
Refer to Table 4-1 for repair/referral of
repair on structural member.
(a) Record name of aircraft
section containing the damaged element,
Figure 4-1.
(b) Record the name of the
damage element such as frame, stringer,
or skin panel.
(c) Describe the location of
the damaged element such as station,
waterline, butt line, or panel location.
(d) Describe the damage to the
element using terms such as hole, crack,
or buckle.
(e) Continue damage recording
for:
1 Other damages to the same
element.
2 Other damaged elements in
the same subassembly.
3 Other damaged sub-
assemblies in the section of the
airframe.
4 Other damage sections of
the airframe as required.
(f) After the damage inspection
is completed, file the damage report in
the aircraft log book and make entries
as required.
(2) Damage diagrams. Show the
location and extent of damage as shown
in the diagrams in Figure 1-3. The
damage can be drawn by hand. Accurately
locating damage on a diagram will
greatly help the damage assessment
procedure.
TM 55-1520-228-BD
A I R F R A M E
4-5
Hide quick links:
Advertisement
Table of Contents
