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 A.  Prepare for test
 (1)  Verify that GROUND PROX WARN CMPTR; CADC 1 PWR, and SYNC EXCIT; VHF NAV-1; ALTIM LOW 1 circuit breakers on panel P7 and pilots' IND LTS circuit breaker on panel P12 are closed.
 (2) Provide electrical power (Ref 24-22-00). XA (3) Verify that VHF-1 is tuned to an ILS frequency (Ref 34-31-00) and XA that glide slope flag is out of view on captain HSI - (not required XA on SN ALL since mode 5 is deactivated) - If not attainable perform XA an ILS 1 self-test simultaneously with self-test activation. XA (4) Verify that warning flag on captain height indicator and altitude XA indicator are not in view and that LRRA #1 and CADC 1 show 0 ft.
 (5)  Verify that cockpit interphone system is operating. Refer to
 23-51-00. XA (6) Verify that landing gear selector is in DN position (not required on XA SN, GN, MD, VM ALL, required on AF 121, 122, 157, 161, 183, 184,
 only. XA (7) Verify that inboard trailing edge flaps are in 20 degrees or less XA (not required on SN, GN, MD, VM ALL, required on AF 121, 122, 157 XA 161, 183, 184 only).
 B.  Test System
 (1)  Press and hold GROUND PROXIMITY TEST switch for 5 seconds. Check
 that aural warning consisting of GLIDE SLOPE and WHOOP WHOOP PULL XA UP occurs (no GS warning on SN ALL). XA Check that PULL UP or GPWS, GPWS INOP, and below GS indicators XA illuminate (No below GS indicator on SN ALL). XA (2) Release test switch. Check that visual and aural warnings go off. XA XA (3) Maintain STALL WARNING test switch (P5 panel) on test position XA while repeating step (1) and check that no visual or aural warning XA occur (On GN and AF airplanes incorporating SB 24-2171, check XA that visual and aural warnings occur). Return stall warning test XA switch to HTR OFF position.
 EFFECTIVITY

 AF ALL; LH ALL; SN ALL;  CONFIG 1 AT ALL; GN ALL; MD ALL;  ATG Page 501 VM ALL  Sep 25/94

34-46-00
 XA (4) On AF; GN; MD; VM, only if LRRA No. 1 indicator is equipped with XA an ON/OFF switch, switch OFF LRRA No. 1 indicator and repeat XA step (1). Check that aural warning still occurs.
 (5)  Remove electrical power if no longer required (Ref 24-22-00).
 4. System Test
___________
 A. Equipment and Materials
 (1)  Pitot-static test set, probe adapter and gages (Ref 34-11-00).
 (2)
LRRA Altitude Simulator XA (3) Signal Generator, Collins 479T-2 or equivalent (not required for XA SN ALL)

 B. Prepare to test
 (1)  
Set up pitot-static test set and adapter to captain's pitot-static system (Ref 34-11-00), such that predetermined altitude rates from No. 1 CADC may be obtained (Ref 34-12-00).

 (2)  
Set up LRRA altitude simulator such that radio altitude from No. 1 LRRA may be set and varied.

 

 (3)
Set up signal generator such that glide slope deviation signals XA may be set and varied (not required for SN ALL).

 (4)  
Ensure that movement of landing gear selector lever will not result in movement of landing gear.

 CAUTION:_______ALL LANDING GEAR GROUND LOCKS MUST BE INSTALLED. THERE MUST BE NO PRESSURE ON ANY OF FOUR HYDRAULIC SYSTEMS. NO ATTEMPT SHALL BE MADE TO DISTURB FLAG IN LANDING GEAR HANDLE AND NO ATTEMPT SHALL BE MADE TO MOVE HANDLE INTO UP POSITION.

 (5)  
Ensure that trailing edge flaps and drive system are correctly installed and rigged, ready for actuation.

 

 CAUTION: ENSURE THAT GROUND EQUIPMENT IS OUT OF FLAP TRAVEL; THAT
_______ ALL PERSONNEL SAFETY PRECAUTIONS AND WARNINGS ARE IN EFFECT.
 C. Test System
 (1)  
Perform Operational Test. Leave power on.

 (2)  
In-flight Self-Test

 (a)  
Set landing gear selector to OFF.

 (b)  
Set inboard trailing edge flags to 20 degrees or less.

 (c)  
Set CADC No. 1 altitude rate to 0 feet per minute, and radio altitude to 1200 feet.

 (d)  
Press and hold GROUND PROXIMITY TEST switch for 5 seconds. Check that aural warning consisting of GLIDE SLOPE and WHOOP WHOOP PULL UP occurs.

 

 XA  (No GS warning on SN ALL) check that GPWS, GPWS INOP, and BELOW G/S indicators illuminate.
 XA (No below GS indicator on SN ALL) XA (3) Test Take Off Descent Warning (Mode 3)
 (a) On all except AFA 121, 122, 157, 161, 183, 184;
 EFFECTIVITY

 AF ALL; LH ALL; SN ALL;  CONFIG 1 AT ALL; GN ALL; MD ALL;  09 Page 502 VM ALL  Sep 25/94

34-46-00
 XA Using radio altimeter test set, simulate a 500 feet radio XA altitude.
 (b)  AF 121, 122, 157, 166, 183, 184; Using radio altimeter test set, simulate a 200 feet radio altitude.
　
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本文鏈接地址：747飛機維護手冊AMM CHAPTER 34 - NAVIGATION 第34章導航4(48)