Mooney M20J - Page 163

MOONEY SECTION VII
MODEL M20J AIRPLANE AND SYSTEMS DESCRIPTION
1. PRESS-TO-TEST SWITCH
Press red press-to-test switch (3-5 sec.) with master switch ON to illuminate
all annunciator light bulbs, excluding START POWER ON indicator. Defective
bulbs should be replaced prior to the next flight.
2 & 3. GEAR SAFETY INDICATOR
The green GEAR DN light and a red GEAR UNSFE light provide visual gear
position signals. The green light (GEAR DN) shows continuously when the
gear is fully extended. With the navigation lights on, the GEAR DN light is
dim for night operation. All gear lights are out when the gear is fully
retracted. GEAR UNSFE light is on between gear fully extended and gear
fully retracted position.
4
& 5. FUEL LOW INBlCATOWS
LEfT and/or RIGHT, red, FUEL LOW annunciator light comes on when there
is
a 2-112 to 3 ga1.(9.5 to t 1.4 liters) of useable fuel remaining in the respec-
tive tanks. Press to test switch must be held for 3-5 seconds for low fuel warn-
ing circuit to activate.
6. VACUUM MALFUNCTION INDICATOR (VAC-HIGHILOW)
The red VAC annunciator light indicates a mal- function of improper adjust-
ment of air suction system. Air suction is available for operation of the at-
titude gyro, and also the directional gyro, and will be shown in inches of mer-
cury. The designated suction range is 4.25 to 5.5 inches of mercury. The
VAC light will blink when suction is below 4.25 inches of mercury and gives a
steady light when suction is above 5.5 inches of mercury. In either case the
gyros should not be considered reliable during this warning time.
REV.
B 6-12-87
ISSUED 6-2-86