AC NO:
43-15
DATE:
a/15/73
-
AIIIVISORY
CIRCULAR
DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION
SUBJECT:
RE-m
GUIDELINES FOR INSTRUMENT SHOPS
--
1
. PURPOSE.
This Advisory Circular provides guidelines concerning environ-
mental conditions for instrument repair and overhaul shops and information
regarding calibration of test equipment.
2
REFERENCES.
Federal Aviation Regulations (FAR) Parts
43
and
145,
Advisory
Circular (AC)
43-28,
Minimum Barometry for Calibration and Test of Atmospheric
Pressure Instruments, Federal Standard No.
209,
Air Force Technical Order
No.
00-25-203,
American National Standard Report
A-ll.l,and
Society of
Automotive Engineers
(SAE)
Aerospace Recommended Practice No.
421.
3 -BACKGROUND.
Recent comments from members of the aviation community have
indicated a need for information concerning recommended guidelines for instru-
ment repair and overhaul shops. This information is general and can be used
by instrument shop operators regarding acceptable standards when applicable
directives are unavailable.
4.
SCOPE.
These recommended guidelines cover the general environmental
conditions
of the controlled area for repair,
overhaul and servicing of
aircraft
instruments,and
related components whose performance would be
adversely affected by uncontrolled environmental conditions.
5
GENERAL.
accessories)
Repaired and overhauled equipment (including parts and
should equal or exceed the original condition set forth in the
manufacturers’
maintenance or overhaul
manuals(Reference
FAR
43.13.
and
FAR
145.57).
Particular attention should be given to good shop practices
such as proper use of tools,
equipment, and test apparatus necessary to assure
completion of the work in accordance with accepted industry
pract.ices.
All
manufacturers’
service manuals,
instructions,and
service bulletins that relate
to articles being repaired or overhauled should be maintained, in current
condition,
in accordance with FAR
145.57.
6
.
ENVIRONMENTAL CONDITIONS.
a.
General.
L
Repair
and overhaul facilities should
maintain
a
clean,
we
11-
Initiated by:
A.FS-8OL+
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