747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航1(45)

曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者

 (c) Test auxiliary static systems No. 1 and 2 for leakage.
 CAUTION: TO PREVENT PROBE MISALIGNMENT, TEST HOSES AND
_______ ADAPTERS MUST BE SUPPORTED IN SUCH A WAY AS TO ADD NO EXTRA WEIGHT ON PROBES. TURN ON, OR REMOVE MAGAZINE FROM ARINC 542 FLIGHT RECORDER BEFORE PROCEEDING WITH THIS TEST (REF 31-31-01).
 1)  Wet pitot-static probe adapters and connect pitot inlets of lower left and lower right pitot static probes to pitot cutoff valve through pitot system test gage and a flow restrictor.
 CAUTION: ENSURE THAT PROBE ADAPTER IS FLUSHED WITH WATER
_______ BEFORE ATTACHING ADAPTER TO PROBE, OR PROBE AND/OR ADAPTER MAY BE DAMAGED. A SOLUTION CONSISTING OF HALF PURE ETHYLENE GLYCOL AND HALF WATER SHOULD BE USED IN FREEZING TEMPERATURES DOWN TO -40.F.
 2) Seal these locations with vinyl adhesive tape: a) The pitot chamber drain hole in the lower right pitot-static probe b) The pitot chamber drain hole in the lower left pitot-static probe.
 3)  Connect static portion of probe adapters to forward set of static ports (S1) on lower right pitot-static probe and aft set of static ports (S2) on upper right pitot-static probe to two static cutoff valves through static system test gages and flow restrictors.
 EFFECTIVITY

 
 ALL  01 Page 518  Apr 25/9834-11-00
 4) Seal these locations with vinyl adhesive tape:
 WARNING: WHEN THE STATIC PORTS ARE COVERED, MAKE SURE THAT
_______ CONDITION IS VISIBLE FROM THE GROUND. FAILURE TO OBSERVE AND REMOVE COVERINGS OVER STATIC PORTS BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
 CAUTION: DO NOT EXTEND THE SEALS INTO THE STATIC PORTS.
_______ YOU CAN CAUSE DAMAGE TO THE SURFACE IN THE AREA WHEN YOU REMOVE THE SEALS.
 a) The aft static ports (S2) on the upper left pitot-static probe b) The forward set of static ports on the lower left pitot-static probe. 5) Verify that T.E. FLAP LOAD RELIEF circuit breaker on P12 panel is opened.
 WARNING: FAILURE TO OPEN T.E. FLAP LOAD RELIEF CIRCUIT
_______ BREAKER MAY RESULT IN INJURY TO PERSONNEL.
 6) Repeat steps (b) 3) thru 7).
 7) Release vacuum on both static and pitot systems.

 (5)  Elevator Feel Light Test
 NOTE: The following test must be performed to ensure that
____ auxiliary pitot systems No. 1 and 2, which were disconnected prior to system leakage test, are properly reconnected.
 (a)  
Reconnect pitot lines to elevator feel computers and stabilizer control modules.

 (b)  
Provide systems No. 2 and 3 hydraulic power (Ref 29-11-00).

 (c)  
Check that No. 2 and 3 elevator/rudder HYD POWER switches are ON.

 (d)  
Check that PILOT IND LTS circuit breaker on panel P12 is closed.

 (e)  
Check that ELEV FEEL caution light on center instrument panel is off.

 (f)  
Open cutoff valve. Use pneumatic test unit and pitot control valve to apply a pressure of 4.53 (| 0.16) inches of mercury (gage) or 300 (| 5) knots to auxiliary pitot system No. 1 as indicated on pitot system test gage.

 (g)  
When system has stabilized, close pitot cutoff valve. Read and record value indicated by pitot system test gage.

 (h)  
Check that ELEV FEEL caution light comes on.

 (i)  
After 1 minute, read and record value indicated on pitot system test gage. Pressure must not have decreased by more than 0.16 inch of mercury or 5 knots.

 EFFECTIVITY

 
 ALL  19 Page 519  Apr 25/9834-11-00
 (j)  
Relieve auxiliary pitot system No. 1. Check that ELEV FEEL caution light goes off.

 (k)  
Open cutoff valve. Use pneumatic test unit and pitot control valve to apply a pressure of 4.53 (| 0.16) inches of mercury (gage) or 300 (| 5) knots to auxiliary pitot system No. 2 as indicated on pitot system test gage.

 (l)  
When system has stabilized, close pitot cutoff valve. Read and record value being indicated by pitot system test gage.

 (m)  
Check that ELEV FEEL caution light comes on.

 (n)  
After 1 minute, read and record value indicated on pitot system test gage. Pressure must not have decreased by more than 0.16 inches of mercury or 5 knots.

 (o)  
Relieve auxiliary pitot system No. 2. Check that ELEV FEEL caution light goes off.

 (p)  
Remove hydraulic power (Ref 29-11-00).

 (6)  Static System Cross-Manifolding Test
 NOTE: This test does not check system or instrument accuracy, but
____ checks static tubing cross-manifolding continuity only.
　
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航1(45)