(3)  
29-11-00/201, Pressurize/Depressurize Main Hydraulic System

 (4)  
32-00-15/201, Landing Gear Door Locks

 (5)  
32-00-20/201, Landing Gear Downlocks

 D.
Prepare for the Test

 S 865-018
 WARNING:_______OBEY THE REMOVAL PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Remove the door locks from the nose landing gear doors and close the nose landing gear doors (Ref 32-00-15/201).

 S 215-001

 (2)  
Make sure the downlocks are installed on the nose and main landing gear (Ref 32-00-20/201).

 (3)  
Lift the airplane nose with jacks (Ref 07-11-02/201).

 S 865-003
 

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 S 865-019
 (4)  
Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed:

 (a)  
11S15, AIR/GND SYS 1

 (b)  
11S19, AIR/GND SYS 2

 (c)  
11S20, LEVER LOCK

 (d)  
11P29, R IND LTS 2

 S 215-002
 (5)  
Make sure the control lever for the landing gear is in DN.

 S 095-004

 (6)
Remove the downlock from the nose landing gear (Ref 32-00-20/201).

 NOTE: The downlock for the nose landing gear does not have to be
____
 put away.

 S 865-005
 (7)  
Pressurize the left hydraulic system (Ref 29-11-00/201).

 S 865-006

 (8)  
Supply electrical power (Ref 24-22-00/201).

 E.  
Do the Operational Test of the Extension and Retraction System for the Nose Landing Gear

 S 845-016
 (1)  
Put one person at the control lever in the flight deck. Put another person outside the airplane near the nose landing gear. Use the person outside the airplane as an observer and to measure the time for landing gear extension and retraction. Supply interphone communication between the two persons.

 S 715-007

 (2)  
Do the steps that follow to measure the retraction time of the landing gear:

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 WARNING: MAKE SURE THE DOWNLOCKS ARE INSTALLED ON THE MAIN LANDING
_______ GEAR BEFORE YOU MOVE THE CONTROL LEVER. IF THE CONTROL LEVER IS MOVED WITHOUT THE DOWNLOCKS INSTALLED, THE MAIN LANDING GEAR CAN RETRACT AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE RETRACTION PATH OF THE NOSE LANDING GEAR. EXTENSION AND RETRACTION OF THE NOSE LANDING GEAR CAN CAUSE INJURY TO PERSONS OF DAMAGE TO EQUIPMENT IF THE AREA IS NOT CLEAR. MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE DOOR AREA FOR THE MAIN LANDING GEAR. MOVEMENT OF THE DOORS WHEN THE CONTROL LEVER IS CYCLED CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT IF THE AREA IS NOT CLEAR.
 (a)  
Start to measure the time when the control lever is moved to UP.

 (b)  
Move the control lever from DN to UP in 2 |1 seconds.

 NOTE: The override button for the control lever must be pushed
____
 in to move the control lever to UP.

 (c)  
Stop the time when the nose landing gear is retracted and the doors are closed. 1) GUN 206;

 The amber DOORS light can go off before the amber GEAR light goes off.

 (d)  
Write down the retraction time.

 S 715-008
 (3)  
Do the steps that follow to do a check of landing gear reversal:

 (a)  
Move the control lever from UP to DN. When landing gear extension is approximately one half complete, move the control lever back to UP at a constant rate in 3 |1 seconds.

 (b)  
Make sure the nose landing gear changes direction with no hydraulic leakage or damage to parts.

 (c)  
Move the control lever to OFF.

 S 715-009
 (4)  
Do the steps that follow to measure landing gear extension time.

 (a)  
Start to measure the time when the control lever is moved to DN.

 (b)  
Move the control lever from OFF to DN in 2 |1 seconds.

 (c)  
Stop the time when the nose landing gear is down and locked, and the forward doors for the nose landing gear are closed.
　
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