(l)  
Make sure the LEFT, RIGHT and NOSE green DOWN lights and the amber GEAR and DOORS lights are off.

 S 865-226
 (3)  
Close this circuit breaker on the overhead panel, P11:

 (a)  
11D31, HYDR PTU CONT

 TASK 32-35-00-715-190
 4.  Operational Test of the Ground Operation of the Landing Gear Doors__________________________________________________________________
 A. General
 (1)  
This procedure does an operational check of the ground operation to open and close the landing gear doors. It also does a check of the operation of the UNSAFE light. You can do all of the operational tests independently.

 B.
References

 (1)  
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels

 (2)  
AMM 24-22-00/201, Electrical Power - Control

 (3)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 (4)  
AMM 32-00-20/201, Landing Gear Downlocks

 C.
Access

 (1)  
Location Zones
 144 Main Landing Gear Wheel Well (Right)
 211 Control Cabin (Left)
 212 Control Cabin (Right)
 711 Nose Landing Gear
 731 Main Landing Gear (Left)
 741 Main Landing Gear (Right)

 (2)  
Access Panel 198PR Door - Landing Gear Ground Control (Right)

 D.
Test of the Open and Close Ground Operation of the Landing Gear Doors

 S 015-167
 (1)  Open the access door for ground control of the landing gear doors, 198PR (AMM 06-41-00/201). Find the electrical service panel in the main wheel well, P72.
 

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 (2)  S 865-165Supply electrical power (AMM 24-22-00/201).
 (3)  S 865-160Pressurize the left hydraulic system (AMM 29-11-00/201).
 S 715-159

 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE AREA
_______ AROUND THE NOSE AND MAIN LANDING GEAR. THE DOORS OPEN QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
At the same time, move the ALL DOORS OPEN ARM switch to ARM and the ALL DOORS OPEN switch to OPEN. Hold them for 2 seconds. The switches are located on the P72 panel.

 S 715-157

 (5)  
Make sure all the landing gear doors open.

 NOTE: The doors for the main and nose landing gear doors will fall
____ because of their own weight. You can manually help them to the fully open position.
 S 715-156
 (6)  
Make sure the UNSAFE, L; UNSAFE, R; and NOSE GEAR DOOR UNSAFE lights are not on.

 S 715-155

 (7)  
Make sure the power pack for the alternate extension system does not operate for more than 30 seconds. This time is measured from when you moved the ALL DOORS OPEN switch, on P72. The power pack is in the right wheel well.

 NOTE: You can hear the power pack motor operate.
____
 

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 (8)  S 715-164Push the MLG DR UNSAFE LT PRESS TO TEST switch. the electrical service panel for the main wheel for 2 seconds. The switchwell, P72.  is onHold it
 (9)  S 715-163Make sure the UNSAFE, L and UNSAFE, R lights com right wheel well. e on in the left and
 S 715-162

 (10)
 Push the NOSE GEAR DOOR UNSAFE LIGHT PRESS TO TEST switch and hold it for 2 seconds. The switch is on the left equipment panel on the nose landing gear, P63.

 S 715-161

 (11)
 Make sure the NOSE GEAR DOOR UNSAFE light comes on in the wheel well for the nose landing gear.

 S 715-154
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE AREA
_______ AROUND THE MAIN LANDING GEAR. THE DOORS CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (12)
 Move the MLG DR CLOSE SW on the P72 panel to DOOR CLOSE and hold for 2 seconds.

 S 715-153

 (13)
 Make sure the doors for the main landing gear close.

 S 715-149
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE AREA
_______ AROUND THE NOSE LANDING GEAR. THE DOORS CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (14)
 Move the NOSE DOOR CLOSE switch on the P63 panel to ON for 2 seconds.

 S 715-148
　
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