Spectrometric Oil Analysis - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
8-92. SPECTROMETRIC OIL ANALYSIS. The use of Spectrometric oil analysis is becoming widespread
in the general aviation field. It is another useful procedure in the maintenance of modern reciprocating
aircraft engines. The spectrometric method requires complete understanding of the procedures, schedules
and interpretation by the maintenance personnel using this system. It must be remembered that the oil
analysis technique is not a replacement for other established maintenance checks, such as differential
cylinder pressure checks, boroscopic examination, and filter content inspection. The oil analysis is used to
estimate wear ratio values of the particular engine or engines being monitored. For further information on
I Spectrometric oil analysis refer to latest revision of Lycoming Service Letter No. L171.
Revised: 3/11/81
POWER PLANT
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