S 865-087
 CAUTION: MAKE SURE THE PITOT-STATIC PROBE HEATERS ARE OFF DURING THIS
_______ TEST. THE HEATERS CAN CAUSE DAMAGE TO THE EQUIPMENT.
 (1)  Make sure the pitot-static probe heaters are off during the test.
 S 485-088
 CAUTION: MAKE SURE THE PITOT PRESSURE IS NOT LESS THAN THE PRESSURE IN
_______ THE STATIC LINES. MAKE SURE THE DIFFERENCE IN THE PRESSURE (DIFFERENTIAL PRESSURE) IS NOT MORE THAN 10.00 INCHES OF MERCURY. YOU CAN CAUSE DAMAGE TO THE PITOT-STATIC SYSTEM.
 (2)  Apply pressure to the pitot lines for the auxiliary pitot system (AMM 34-11-00/501).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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737-300/400/500MAINTENANCE MANUAL
 S 485-089
 CAUTION:_______ MAKE SURE THE STATIC PRESSURE IS NOT MORE THAN THE PITOT
 PRESSURE.  MAKE SURE THE STATIC PRESSURE IS NOT MORE THAN 8000
 FEET ABOVE THE ACTUAL ALTITUDE OF THE AIRPORT.  MAKE SURE YOU
 DO NOT CHANGE THE PRESSURE AT A RATE OF MORE THAN 3000 FEET FOR
 EACH MINUTE.  YOU CAN CAUSE DAMAGE TO THE PITOT-STATIC SYSTEM.

 (3)  Connect a vacuum source to the auxiliary static system (AMM 34-11-00/501).
 NOTE: You can apply the vacuum source to the drain fittings or the
____ pitot-static probe ports.
 S 485-090
 (4)  
Seal all of the static ports for the auxiliary system that are not used:

 (a)  
Make sure that you can fully remove the seal.

 S 865-091
 (5)  
Make sure these circuit breakers are closed:

 (a)  
P6-2 Panel 1) FLAP LOAD RELIEF

 S 865-092
 (6)  Supply the electrical power (AMM 24-22-00/201).
 S 865-093
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, TRAILING EDGE FLAPS, LEADING EDGE FLAPS AND SLATS, SPOILERS LANDING GEAR AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (7)  Supply the system B hydraulic power (AMM 27-51-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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737-300/400/500MAINTENANCE MANUAL
 S 865-094
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (8)  
Move the flap control lever to the 40-unit detent to extend the flaps.

 (a)  
Make sure the flaps are in the 40-unit position.

 NOTE: Use the flap position indicator to find the position of
____ the flaps.
 E. Do the Test of the Flap Load Limiter System
 NOTE: Use the flap position indicator to find the position of the flaps.
____ S 865-096
 (1)  
Increase the pressure in the pitot-static system until the flaps start to retract.

 S 975-097

 (2)  
Make a record of the actual differential pressure (. P1) in Table 502.

 ~............................................................................... | Table 502 | ................................................................................. | PITOT DIFFERENTIAL PRESSURE VALUES | ................................................................................. | ACTUAL | NECESSARY | ACTUAL | NECESSARY | ACTUAL | NECESSARY | | .P1 | .P1 | .P2 | .P2 | .P1-.P2 | .P1-.P2 | .................................................................................
 |  | 1.121 in Hg  |  | 1.046 in Hg  |  | 0.075 in Hg  |
 |  | (152 kts) to |  | (147 kts) to  |  | (5 kts) min  |
 |  | 1.274 in Hg  |  |  1.197 in Hg  |  |  |
 |  | (162 kts)  |  |  (157 kts)  |  |  |
　
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