Piper SEMINOLE PA-44-180, Maintenance Manual

Page: 476 / 881

Carry out the following procedures in the sequence designated, because each instruction is a prerequisite
for the one following it. Should the system fail to respond as specified, find the malfunction and correct it
before continuing.
1. Keep hydraulic reservoir full of fluid. Make provisions to add fluid to the reservoir as necessary
2. Make sure all switches are OFF and that the gear selector is in the DOWN position.
3. Position the BATT MASTR switch ON.
4. Check that the three green safe lights at the bottom center of the panel are LIT, the red WARN GEAR
UNSAFE light at the top of the panel is OFF, the gear warning horn is OFF, and hydraulic pump does
not operate. On models with gear warning mute switch, check that the GEAR WARN MUTE
a n n u nciator light is OUT.
5. Check flaps are RETRACTED. Move the gear selector switch to the UP position.
6 .
Check that the green safe lights are O F F, the red WARN GEAR UNSAFE light is ON, and the warni n g
horn is ON. After all gear are retracted fully with the nose gear doors closed, check that the red WA R N
GEAR UNSAFE light is O F F, the pump motor stops running, and that the warning horn is still O N.
7. On models with gear warning mute switch:
A. Depress gear mute switch.
B. Check that the gear warning horn is OFF, that the GEAR WARN MUTE annunciator light is LIT,
C. Move both throttles to the mid travel position. Check that the GEAR WARN MUTE annunciator
light is OFF.
D. Close both throttles. Check that the gear warning horn is ON
8. Move the left throttle to the mid position. With right throttle closed and gear fully retracted:
A. The gear warning horn should remain ON.
B.
On models with gear warning mute switch:
(1) Depress gear mute switch.
( 2 ) Check that the gear warning horn is OFF and that the GEAR WARN MUTE annunciator
light is LIT,
(3) Move right throttle to mid position. Check that the GEAR WARN MUTE annunciator light
extinguished.
(4) Close right throttle. Check that the gear warning horn is ON
9. Close left throttle and move right throttle to mid travel position.
A. The gear warning horn should remain ON.
B.
On models with gear warning mute switch:
(1) Depress gear mute switch.
( 2 ) Check that the gear warning horn is OFF and that the GEAR WARN MUTE annunciator
light is LIT,
(3) Move left throttle to mid position. Check that the GEAR WARN MUTE annunciator light
extinguished.
(4) Close left throttle. Check that the gear warning horn is ON
10. Move both throttles to their mid travel positions.
11. The warning horn should go OFF.
12. Extend the flaps to their second notch.
A. The horn should come ON.
B. On models with gear warning mute switch:
(1) Depress gear mute switch.
( 2 ) Check that the gear warning horn stays ON and that the GEAR WARN MUTE annunciator
light is not LIT,
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
32-62-05
Page 32-55
Revised: June 20, 1995
2I3