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Page Title:
Table A-1. Chip Evaluation Criteria |
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 NAVAIR 17-15-50.3
TM 38-301-3
T.O. 33-1-37-3
CGTO 33-1-37-3
MATERIAL
TYPE - QUANTITY - SIZE
ACTION REQUIRED
Magnetic (Steel)
Particles too small to measure
None
Less than 10 particles, none over
Perform a serviceability check
1/32" diameter and 1/4" long.
IAW TM55-1520-237-23, PARA
6-27.2.
Splinters or granular particles.
Perform a serviceability check
IAW TM55-1520-237-23, PARA
6-27.2.
Chips exceeding the size and/or
Replace tail rotor gearbox.
number criteria above.
Non-Magnetic
All particle sizes.
Perform a serviceability check
IAW TM55-1520-237-23, PARA
6-27.2.
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