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 NAVAIR 17-15-50.3
TM 38-301-3
T.O. 33-1-37-3
ENGINE:
PT6A-34B
AIRCRAFT:
(T-44A)
JOAP ATOMIC EMISSION ROTRODE
Fe
Ag
Al
Cr
Cu
Mg
Ti
Ni
Sn
Si
Abnormal Trend
(PPM Increase
4
3
4
3
3
3
2
3
4
3
in 10 hrs)
Normal Range
0-11
0-6
0-11
0-4
0-6
0-6
0-1
0-4
0-19
0-27
Marginal Range
12-14
7
12-13
5-6
7
7
2-3
5-6
20-22
28-30
High Range
15-17
8-9
14-15
7
8-9
8-9
4-5
7-8
23-24
31-34
Abnormal
18+
10+
16+
8+
10+
10+
6+
9+
25+
35+
Average Concentration Other Elements:
Fe
Fe
Cu
Ag
Main bearings and bearing cages
Fe
Cu
Al
Accessory bushing bearing turning in magnesium housing
Fe
Cu
Mg
Accessory bushing bearing turning in magnesium housing
Ag
Plating on bearing cages
Si
Oil contamination
Sn
Plating on planet gear bearing carriers
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