JOAP ATOMIC EMISSION ROTRODE (Cont)

NAVAIR 17-15-50.3

TM 38-301-3

T.O. 33-1-37-3

CGTO 33-1-37-3

ENGINE:

PT6A-68 (Cont)

AIRCRAFT:

(T-6)

4. It is recommended that engine oil JOAP samples are taken:

After the engine has run for at least 30 minutes.

Within 10 minutes of engine shutdown.

Prior to the addition of new engine oil.

From the same location on the engine each time samples are taken.

5. The wearmetal limits are derived from the analysis of results of engine JOAP history data supplied by the field

labs. These limits will be revised as new data becomes available and experience is gathered on the PT6A-68

engines.

A31