TM 1-1500-204-23-6
CHAPTER 1
INTRODUCTION
1-1. Purpose.
This
volume
provides
general
information pertaining to the use and identification of
hardware and materials. The application of hardware
and materials on specific aircraft is not covered in the
volume. Specific aircraft application, usage, and
substitution
is
found
in
the
individual
aircraft
maintenance manual. This volume is of maximum
benefit to the mechanic who desires information about
bolts, nuts, rivets, clamps, fittings, plate nuts, torque
values, lockwire techniques, cotter pins, safety pins, Hi-
Shear rivets, etc. This volume furnishes the mechanic
with
information
about
how
to
perform
various
mechanical functions which are used on all aircraft.
This volume is not a requisitioning authority, and
applicable repair part and special tool lists should be
consulted to obtain the unit of issue and National Stock
Number of the items required for maintenance.
1-2. Scope. General information to guide aircraft
maintenance personnel is covered within this volume;
however, no attempt has been made to include special
parts or equipment which are applicable only to
individual or special aircraft. Aircraft hardware, their
types, characteristics, and uses are presented in
Chapter 2. Materials used in ground servicing and
airframe
maintenance,
including
rubber
materials,
metals, phenolic and plastic materials, adhesives,
sealants, and cements, are contained in Chapters 3
through 6.
1-3. Authority
for
Substitution
and
Interchangeability
of
Material
(Air
Items).
Substitution or interchange of items of material for
maintenance of Department of the Army aircraft will not
be authorized, nor will orders be issued for shipment,
unless substitution or
interchangeability has been
authorized by the U.S. Army Aviation and Troop
Command (ATCOM) through one of the following
methods:
·
Incorporation
of
substitution
or
interchangeability data in supply manuals,
repair
parts
appendices,
or
technical
directives.
·
Interim information in the form of individual
replies to specific problems.
1-4. Responsibilities of Maintenance Activities.
Department
of
the
Army
activities
engaged
in
maintenance will:
·
Utilize substitute or interchangeable items only
when authorized by one of the methods
outlined in paragraph 1-3.
·
Ensure
that
maintenance
contracts
for
Department of the Army aircraft provide that
material furnished by the contractor meet the
substitution and
interchangeability standards
outlined in paragraph 1-3.
·
Refer
to
ATCOM
problems
concerning
interchangeability or substitution of parts,
equipment,
or
material
not
covered
in
paragraph 1-3.
1-5. Responsibilities of ATCOM. ATCOM will:
·
Ensure
that
necessary
substitution
and
interchangeability information is published in
supply manuals, repair part and special tool
lists, and technical directives applicable to
specific Army aircraft.
·
Investigate
and
correlate
information
on
substitution
or
interchangeability
of
components, assemblies, subassemblies, and
detailed parts to be utilized in support of
equipment.
·
Determine and authorize substitution of raw
materials or stock, such as metal sheets, rods,
bars, chemicals, lubricants, etc., for use in
repair of Department of the Army aircraft
either by Department of the Army activities or
commercial contractor.
1-6. Recommended Changes to Department of the
Army Publications. Receipts of substitute items that
have not been approved as outlined in paragraph 1-3 to
be utilized for maintenance of Department of the Army
aircraft will be reported on Department of the Army
Form 2028.
1-7. Consumable Materials. Refer to Chapter 7 for
consumable materials listed in this volume.
Change 2 1-1/(1-2 blank)
