737-300 400 500 AMM 飞机维护手册 导航 NAVIGATION 1(21)

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 (1)  Apply pressure to the pitot-static system equal to 300 |5 knots of airspeed (4.53 |0.16 in. Hg differential).
 S 865-055
 CAUTION: HOLD THE VACUUM, AS AN ALTERNATIVE, BEHIND THE CUTOFF VALVES
_______ DURING THE CUTOFF TIME. YOU CAN CAUSE DAMAGE TO THE EQUIPMENT WHEN YOU OPEN THE CUTOFF VALVES WITHOUT THE VACUUM.
 (2)  
Close the pitot cutoff valve to the system when the necessary airspeed is reached.

 S 865-057

 (3)
Stop for 5 to 6 minutes to permit the system to become stable.

 S 865-058

 (4)  
Write the airspeed.

 S 865-059

 (5)  
Stop for one minute and read the airspeed again.

 S 865-060

 (6)  
Make sure that the airspeed does not decrease by more than 5.0 knots

 (0.16 in. Hg).
 S 865-061
 CAUTION: TO PREVENT EQUIPMENT DAMAGE, THE PITOT LINE PRESSURE MUST
_______ ALWAYS EQUAL OR EXCEED STATIC LINE PRESSURE. KEEP RATE OF PITOT PRESSURE CHANGE LESS THAN 300 KNOTS FOR EACH MINUTE. KEEP THE DIFFERENTIAL PRESSURE BETWEEN 0 AND 10.00 INCHES OF MERCURY.
 (7)  Open the pitot cutoff valve and send the captain's pitot system to ambient pressure.
 NOTE: You must release the vacuum from the cutoff valves slowly.
____
 E. Put the Airplane to Its Usual Condition
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 34-11-00

 ú ú 02 Page 512 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 085-312

 CAUTION:_______ MAKE SURE THAT THE PITOT-STATIC PROBE HAS NO ADDED WEIGHT FROM
 THE TEST HOSES.  YOU CAN BEND OR TWIST THE PITOT-STATIC PROBE
 OUT OF TOLERANCE.

 CAUTION: DO NOT DISCONNECT THE PNEUMATIC TEST SET WHEN THE PITOT-STATIC
_______ SYSTEM IS NOT AT AMBIENT PRESSURE. YOU CAN CAUSE DAMAGE TO THE EQUIPMENT.
 (1)  
Disconnect the pneumatic test set from the pitot-static probe adapter.

 S 085-067

 (2)  
Remove the pitot-static probe adapter from the upper left pitot-static probe.

 (a)  Remove the probe adapter from the probe.
 NOTE: Dry off the pitot-static probe probes with a soft rag
____ when you use ethylene glycol.
 CAUTION: MAKE SURE THAT YOU REMOVE ALL OF THE PIECES OF TAPE FROM
_______ THE PITOT-STATIC PROBE. THE SYSTEM WILL NOT OPERATE CORRECTLY WHEN THE TAPE IS ON THE PITOT-STATIC PROBE.
 (b)  Remove the vinyl adhesive tape from the probe pitot chamber drain hole.
 S 205-068
 (3)  
Examine the pitot-static probe for unwanted materials and rough locations on the inner and outer surfaces (Ref 34-11-11/601).

 S 215-069

 (4)  
Make sure that the pitot-static probe does not show damage to the pitot tip or the static ports (Ref 34-11-11/601).

 S 865-070

 (5)  
Close the STALL WARNING NO. 1 and NO. 2 circuit breakers on load control panels P6 and P18.

 (6)  
Remove electrical power if it is not necessary (Ref 24-22-00/201).

 S 865-072
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 ú ú 06 Page 513 ú Mar 15/98

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TASK 34-11-00-865-073
 4. The First Officer's Pitot System Leak Test
__________________________________________
 A. Standard Tools and Equipment
 (1)  
Air data test set, Castleberry AT700-2, Castleberry Instr & Avionics, Austin, TX; or equivalent

 (2)  
Pitot-static probe adapter kit, P/N AD-953-7, Nav-Aids Ltd., Montreal, Canada; or equivalent

 (3)  
Flow restrictors, control valves, cutoff valves, vinyl adhesive tape, and port seals as required

 B. References
 (1)  
24-22-00/201, Manual Control

 (2)  
34-11-11/601, Pitot-Static Probe

 C. Prepare for the Test
 S 865-074
 (1)  Supply the electrical power (Ref 24-22-00/201).
　
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