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 NAVAIR 17-15-50.3
TM 38-301-3
T.O. 33-1-37-3
CGTO 33-1-37-3
ENGINE:
JT15D-5B
AIRCRAFT:
T-1A (USAF)
JOAP ATOMIC EMISSION ROTRODE
Fe
Ag
Al
Cr
Cu
Mg
Na
Abnormal Trend
(PPM increase in 10
4
3
4
3
3
6
2
hours)
Normal Range
0-8
0-3
0-6
0-3
0-3
0-7
0-8
Marginal Range
9-11
4-5
7-10
4-6
4-5
8-10
9-10
High Range
12-15
6
11
7-8
6-8
11-14
11
Abnormal
16+
7+
12+
9+
9+
15+
12+
JOAP ATOMIC EMISSION ROTRODE (Cont.)
Ni
Pb
Si
Sn
Ti
B
Mo
Zn
Abnormal Trend
(PPM increase in 10
6
2
3
4
2
2
3
2
hours)
Normal Range
0-6
0-3
0-27
0-19
0-5
0-4
0-5
0-4
Marginal Range
7-9
4-5
28-30
20-22
6
5-6
6-7
5-6
High Range
10-15
6
31-34
23-24
7
7
8-11
7
Abnormal
16+
7+
35+
25+
8+
8+
12+
8+
Average Concentration Other Elements:
For NORMAL or MARGINAL range, continue the engine in service and refer to Table 2-2: DECISION MAKING
GUIDANCE and maintain a normal sampling interval. For HIGH and ABNORMAL range or ABNORMAL
TREND, provide the JOAP laboratory results to the Logistic Support Contractor (LSC) for recommended course
of action. (See the notes below.)
For the HIGH or ABNORMAL range, refer to Table 2-2: DECISION MAKING GUIDANCE and proceed as
follows:
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