CESSNA SECTION 8
MODEL
2088 (675 SHP)HANDLING, SERVICE, AND MAINTENANCE
FUEL
(Continued)
PROCEDURE FOR CHECKING FUEL ADDITIVES
1
Prolonged storage of the airplane will result in a water buildup in the
fuel which "leaches out" the additive. An indication of this is when an
excessive amount of water accumulates in the fuel tank sumps. The
concentration of additive can be checked using an anti-icing additive
concentration test kit. For additional information about this kit, refer to
Chapter 12 of the 208 series maintenance manual. It is imperative that
the instructions for the test kit be followed explicitly when checking the
additive concentration. The additive concentrations by volume for
EGMElDlEGME shall be 0.10 percent minimum and 0.15 percent
maximum, either individually or mixed in a common tank. Fuel, when
added to the tank, should have a minimum concentration of 0.10
percent by volume.
CAUTION
IF THE FUEL ADDITIVE CONCENTRATION HAS FALLEN
BELOW 0.035% BY VOLUME, THE AIRPLANE SHOULD
BEDEFUELEDANDREFUELED.
If additional anti-static protection is desired, the following additive is
approved for use:
Dupont
Stadis 450
CAUTION
THESE ADDITIVES SHALL NOT EXCEED A MAXIMUM
CONCENTRATION OF
1
PART PER MILLION BY
WEIGHT.
If additional biocidal protection is desired, an additive is permitted for
use in certain conditions. Fuel tank maintenance practices are of prime
importance in controlling
microb~al growtn. However, other factors sucn
as climate,
airolane design, route structure and uril~zation also affect
microbial
grodh; therefGre, occasional use of a biocide may be
required.
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Revision 23
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U.S. 8-23
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