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Allied Laboratory Spectraspan (A)
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TM-38-301-1 Introduction Theory Benfits Customer Sampling Procedures Programs and Reports Manual
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STANDARD LAB RECOMMENDATION CODES - NON AERONAUTICAL FOR SPECTROMETRIC ANALYSIS
NAVAIR 17-15-50.1
TM 38-301-1
T.O. 33-1-37-1
CGTO 33-1-37-1
APPENDIX A - RECOMMENDATIONS
STANDARD LAB RECOMMENDATION CODES - AERONAUTICAL FOR SPECTROMETRIC ANALYSIS
CODE
GENERAL LAB RECOMMENDATIONS
A
Sample results normal; continue routine sampling.
X
Analysis results supplied to customer; no recommendation required.
Z
Previous recommendation still applies.
CODE
INSPECTION RECOMMENDATIONS (Requires Feedback)
H**
Inspect unit and advise lab of finding. Abnormal wear indicated by *** PPM (element).
R**
Do not fly or operate; inspect filters, screens, chip detector and sumps; advise laboratory of results.
T**
Do not fly or operate. Examine for discrepancy and advise laboratory of results and disposition. If
discrepancy found and corrected, continue operation and submit resample after *** hours of operation. If
discrepancy is not found, recommend remove component from service and send to maintenance.
CODE
OIL CHANGE RECOMMENDATIONS (Requires Resample)
J
Contamination confirmed. Change oil, sample after *** minute run-up and after *** operating hours.
NOTE: Contamination is defined as water, coolant, silicon, etc.  and not wear metals.
Use the
appropriate recommendation codes for increasing trends or elevated wear- metal conditions.
W
Contamination suspected. Change oil; run for *** additional hours, take samples hourly. (This code is for
Air Force ALC Depot use only).
CODE
LAB REQUESTED RESAMPLES (Requires Resample)
B*
Resample as soon as possible; do not change oil.
C*
Resample after *** hours; do not change oil.
E*
Do not change oil. Restrict operations to local flights or reduced load operation, maintain close
surveillance and submit check samples after each flight or *** operating hours until further notice.
F*
Do not change oil. Submit resample after ground or test run. Do not operate until after receipt of
laboratory result or advice.
G*
Contamination suspected, Do not change oil, resample unit and submit sample from new oil servicing
this unit.
P*
Do not fly or operate; do not change oil; resubmit resample as soon as possible.
Q*
Normal PPM reading was obtained from test cell run after complete P.E. where oil lubricated parts were
changed/removed/replaced. Monitor engine closely after installation to ensure a normal trend before
release to routine sampling.
NOTES:
*Resample (red cap) required
**Maintenance feedback required; advise laboratory of findings
***Laboratory will specify time limit
A-1

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