sonaca aircraft S201 - Page 244

S201 AFM
7 - AIRPLANE AND SYSTEMS
DESCRIPTION
7.10 - FUEL SYSTEM
27/06/2019
SONAIR-S2-D-MAN-006
Page : 7-77
Rev. : A
7.10.1 FUEL TANKS
The Sonaca 201 is equipped with 2 wing tanks, each tank integrated within the
inboard wing leading edges and equipped with strainers in pick up line and drain
fittings.
Type
Capacity (liter)
Capacity of each tank
73 L
Total capacity
146 L
Total Usable fuel
140 L
Total unusable fuel
6 L (3 L per tank)
Approved fuel grades
Minimum RON 95 / minimum AKI 91
MOGAS: EN 228 Super, EN 228 Super plus, ASTMD4814
Leaded AVGAS: AVGAS 100LL (ASTM D910).
Unleaded AVGAS: UL91 (ASTM D7547).
WARNING
Do not fly with fuel under unusable fuel level.
The fuel pickup is located inboard rearward in the fuel tank. The aircraft
should at not be subjected to sustained side slip when fuel tanks are nearly
empty as this may expose the fuel lift pipe to suck air, thereby starving the
engine of fuel leading to engine failure.
Unusable fuel quantity is determined in cruise attitude, wings level. Climb
attitude is less critical and descent attitude is more critical when reaching
low fuel level.
NOTE
Operate with Unleaded rather than Leaded fuel as much as possible. Leaded
fuel will make the engine run rougher and will increase maintenance costs.