NAVAIR 01-1A-509-3
01 March 2005
TM 1-1500-344-23-3
TO 1-1-689-3
CHAPTER 4
CORROSION REMOVAL
mildest method shall always be used to remove
4-1. GENERAL.
corrosion. The following methods are approved for use
4-1.1. MAINTENANCE FUNCTIONS. This chapter
on avionics:
outlines the materials, equipment, and techniques
involved in corrosion removal. In each case, some
4-2.2.1. Hand Rubbing/Abrasion.
discretion on the part of the Organizational/Unit and
Intermediate Maintenance personnel is warranted. It
4-2.2.1.1. The nature of some surfaces, such as
is important that personnel analyze the problem and
chrome, nickel, gold and silver plated contacts,
select the correct corrosion removal materials. In
cadmium and tin plated connectors and accessories,
addition, each case should be followed up where
limit the use of highly abrasive methods. Tarnish and
possible to see if the corrosion has been arrested. It is
light corrosion can be removed from such surfaces by
also extremely important that personnel identify
rubbing with:
whether the base material of connectors and
accessories is metal or composite. Corrosion removal
a. Eraser (Volume IV or V, Chapter 2).
is an important function in maintaining miliary aircraft.
b. Brushes, A-A-3077 and A-A-2074, (Volume IV
4-1.2. ITEM INSPECTION. Whenever equipment is
or V, Chapter 3).
removed from aircraft for bench check or repair, covers
and housings should be inspected and treated for
c. Non-Abrasive Pad, A-A-3100 (Volume IV or V,
corrosion. Avionic technicians must ensure that
c o r r o s i o n repair, treatment, and preventive
maintenance become part of normal maintenance and
4-2.2.1.2. Other surfaces such as antenna mounts,
repair procedures.
equipment racks, chassis, can have light to heavy
corrosion removed by hand rubbing with:
4-2. CORROSION REMOVAL MATERIALS AND
a. Abrasive Mat, A-A-58054 (Volume IV or V,
EQUIPMENT.
4-2.1. G E N E R A L .
Organizational/Unit
and
Intermediate Maintenance Activities should review
b. Abrasive Cloth, ANSI-B74.18 (Volume IV or V,
Volume IV (Navy and Army) or Volume V (Air Force) of
this manual for a listing of consumable materials,
tools, and support equipment authorized for use during
CAUTION
corrosion control maintenance of avionic equipment.
Air Force should also review TO 1-1-691. Where
The Blast Cleaning Cabinet, Hand-Held
facilities and space permit, the additional materials/
Abrasive Tool, and Portable Mini-Abrasive Unit
equipment described in Chapter 2 can be added to the
shall not be used to clean electrostatic
Avionic Corrosion Work Center. This will achieve more
discharge sensitive (ESD) devices. This
efficient production of cleaning and treatment.
includes, but is not limited to, microminiature
and similar microelectronic components,
4-2.2. CORROSION REMOVAL. When corrosion is
separate or installed in equipment. Refer to
detected, corrective action is required. If the corrosion
paragraph 2-5.2.5. for other restrictions.
is within repairable limits specified in the applicable
service directives, corrective action shall be initiated.
4-2.2.2. Portable Mini-Abrasive Unit. The Portable
This shall consist of cleaning, corrosion removal,
Mini-Abrasive Unit (Volume IV or V, Chapter 3) is a
treatment and preservation, where required. The
hand-held miniature abrasive tool used to remove light
