01 March 2005
2-4.9. C L E A N I N G TRACK EXAMPLE. As an
illustrative example of cleaning track use, assume the
cleaning track is "BCSR235". This would correspond
Cleaning Track Numbers
to the following maintenance actions (refer to Figure 2-3
a. B - Clean with the abrasive tool and glass beads.
b. C - Scrub with cleaning brush.
c. S - Clean with water base spray with one ounce
of detergent, MIL-D-16791, in 1 gallon of fresh water at
a maximum of 30 psi.
d. R - Rinse with water base spray with fresh water
at a maximum of 30 psi.
e. 2 - Dry in circulating air drying oven at 130F
2-4.6. TYPE OF AVIONIC EQUIPMENT. The criteria
f. 3 - Air dry as required.
for selection of a cleaning track are also based on type
of avionic component to be cleaned. A thorough
g. 5 - Preserve as specified by the component's
inspection of the item to be cleaned is important to
Maintenance Instruction Manuals (MIMs) or Chapter 9.
determine the type of circuitry and components
involved. Table 2-2 is a guide for determining the
2-4.10. CLEANING TRACK DESCRIPTIONS. The
cleaning track to use on various electronic and electrical
cleaning tracks are designed to fulfill specific functions.
Drying selection depends on availability of drying
2-4.7. CLEANING RESTRICTIONS.
ovens, Volume of the component, and time available
for drying. Appropriate painting, preservation, and
2-4.7.1. Selection of the cleaning track is a decision to
packaging steps are selected for the individual item
be made by the avionic cleaning facility supervisor.
being cleaned. The following are description of each
Certain circuit components can be damaged by support
2-4.10.1. Track No. 1.
2-4.7.2. The use of support equipment on certain
avionic equipment and components is restricted
2-220.127.116.11. This track removes light dirt, dust, and
salt spray. Solvent and detergent ultrasonic cleaners
are not required. This track is considered the mildest
2-4.8. CLEANING TRACK IDENTIFICATION. The
and has the widest application in cleaning of various
types of avionic equipment.
conjunction with Cleaning Track Legend, Table 2-3.
The cleaning track legend defines each element of the
2-18.104.22.168. The component is cleaned and rinsed in
cleaning track. Each function and subfunction on the
the Cleaning Booth (Booth, Cleaning, Water Base
cleaning track is assigned an alphanumeric code.
Solvent Spray) using Detergent, MIL-D-16791. One
These characters are used to identify the cleaning
ounce (2 tablespoons) of detergent is mixed in one
gallon of fresh water.
to keep a log of all avionic equipment and components
processed through the cleaning tracks. In such cases,
the cleaning track number would identify exactly the
process used when cleaning a particular component.