Beechcraft C23 SUNDOWNER 180 Pilot Operating Handbook page 60

Section
II
BEECHCRAFTSundowner180
Limitations
C23 (M-1285 and After)
PLACARDS
On Fuel Selector Panel (M-1285
through
M-1516):
L TANK
R TANK
29
GAL
29
GAL
OFF
On Fuel Selector Panel (M-1517
through
M-1879
except
M-1875
or
prior
airplanes after
cornplíance with Service
Instructions No. 0624-281)
L
TANA TANAL
OFF
OFF
2-26
February
1979