TM 1-1520-238-23
8-76
SECTION II. FLIGHT INSTRUMENTS MAINTENANCE
8.29.
FLIGHT INSTRUMENTS INSPECTION
8.29.1. Description
This task covers:
Inspection.
8.29.2. Initial Setup
Personnel Required:
68X
Armament/Electrical System Repairer
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors opened and covers, panels,
and fairings removed as necessary
8.29.3. Inspection
a. Check flight instruments and instrument panel mounting areas for dents, nicks, and cracks. None
allowed.
b. Check instrument panel screw holes for stripped or damaged threads. Acceptable thread damage cannot
exceed 50 percent of one thread.
c. Check front panels of instruments for dents, nicks, and cracks. None allowed.
d. Check instruments and their front panels, covers, switches, pointers, and knobs for loose installation.
None allowed.
e. Check instruments for loose or missing hardware. None allowed.
f. Check pointers on instrument faces for wear and damage. None allowed.
g. Check instrument scales for wear, illegibility, distortion, and discoloration. None allowed.
h. Check electrical connectors for loose installation. Inspect lockwire for loose or broken wires. None
allowed.
i. Check instruments for fogging and moisture. None allowed.
j. Secure opened access doors; install removed access covers, panels, and fairings (para 2.2).
END OF TASK
