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GENERAL AEROSPACE

Boeing 737-300

MAINTENANCE MANUAL

EFFECTIVITY

PW245

34-53-11GA

DRAWING # GA-KD28-ATC-MM

Page 403

Use and disclosure shall be in accordance with the proprietary legend located on the cover of this document

Aug 15/10

ATC Antenna Installation

Figure 401.

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Summary of Contents for 737-300 Series

Page 1: ...er any confidentiality agreement contract or license with General Aerospace neither recipient nor its agents representatives or employees will copy reproduce or distribute this information in whole or...

Page 2: ...W245 DRAWING GA KD28 ATC MM Page LR 1 Use and disclosure shall be in accordance with the proprietary legend located on the cover of this document Aug 15 10 LOG OF REVISIONS Revision No Description Pag...

Page 3: ...1 Aug 15 10 Effective pages 34 53 31 EP 1 Aug 15 10 401 Aug 15 10 402 Aug 15 10 Table of Contents 1 Aug 15 10 34 53 41 401 Aug 15 10 34 53 00 402 Aug 15 10 1 Aug 15 10 2 Aug 15 10 3 Aug 15 10 4 Aug 1...

Page 4: ...der 3 4 ATC antenna 3 5 Operation 3 Troubleshooting 34 53 00 1 General 101 2 References 101 3 Prepare for Troubleshooting 101 Adjustment Test 34 53 00 1 General 501 2 Operational Test ATC System 501 3...

Page 5: ...ression circuit is connected between the TCAS Computer ATC transponders and the DME interrogators to prevent simultaneous transmissions F The ATC system operates in three different modes Mode A mode C...

Page 6: ...W245 34 53 00GA DRAWING GA BC17 ATC MM Page 2 Use and disclosure shall be in accordance with the proprietary legend located on the cover of this document AUG 15 10 ATC System Component Location Figure...

Page 7: ...m ATCRBS In the airplane its function is to transmit a coded response to a coded interrogation transmitted by the air traffic control ground station 2 There are two types of radar at each ATC ground s...

Page 8: ...ation number Two others called framing pulses come before and after the twelve information pulses The last is a special identification pulse to aid the radar operator The mode C reply is basically the...

Page 9: ...0 MAINTENANCE MANUAL EFFECTIVITY PW245 34 53 00GA DRAWING GA BC17 ATC MM Page 5 Use and disclosure shall be in accordance with the proprietary legend located on the cover of this document AUG 15 10 Tr...

Page 10: ...to 500 watts peak RF power The power amplifier output is then sent to the Diplexer to be routed to ATC transponder antenna 4 Functional Test a Upon manual activation of the test switch either on the...

Page 11: ...Mode S functions operate when the mode S programming plug is configured with a unique mode S address If all the programming pins are grounded they have a bit value of one then there is no unique addre...

Page 12: ...the equipment C The troubleshooting procedures are applicable to ATC system No 1 Figure 101 and ATC system No 2 Figure 102 2 References A 24 22 00 201 Manual Control B 34 53 02 501 ATC System Adjustm...

Page 13: ...es on examine the top antenna cable Is the cable OK and the ATC transponder installed properly NO Repair or replace the antenna cable or install the ATC transponder properly Ref 34 53 31 201 YES Repla...

Page 14: ...the ATC antenna cable Repair or replace as necessary Ref 34 53 11 401 YES System is operational If the system test failed CODE test replace the transponder Ref 34 53 21 401 and do the system test aga...

Page 15: ...d test YES Replace the top ATC antenna Ref 34 53 11 401 and do the required test If the ANT light indicator comes on examine the top antenna cable Is the cable OK and the ATC transponder installed pro...

Page 16: ...ine the ATC antenna cable Repair or replace as necessary Ref 34 53 11 401 YES System is operational If the system test failed CODE test replace the transponder Ref 34 53 21 401 and do the system test...

Page 17: ...sponder circuitry and the same for the top ATC antenna 2 Operational Test ATC System A General 1 The operational test is a fast check of the ATC system It uses only the system s BITE function No speci...

Page 18: ...he select keys to get to the desired test and push the RUN STOP key B Special Tools and Equipment 1 ATC Transponder Ramp Test Set IFR ATC 601 C References 1 AMM 24 22 00 201 Manual Control 2 AMM 34 12...

Page 19: ...and 7700 7777 These are emergency codes 1 Set the code switches on the ATC Control Panel to a desired ATC ID code 2 Set the transponder select switch on the ATC Control Panel to the No 1 system 3 On t...

Page 20: ...Only a Make sure DF 11 and AA airplane s address 19 Do a check of the MODE S UF16 TEST Mode S transponder Only a Make sure DF 16 AC airplane s altitude and ADDRESS airplane s mode S address NOTE No r...

Page 21: ...W ERP 57 0 dBm NOTE Effective Radiated Power ERP is the product of the antenna output power and antenna gain b Make sure the Minimum Threshold Level MTL sensitivity is 74dBm 3dBm NOTE An additional 3d...

Page 22: ...ystem test again for the right or No 2 ATC system and use the No 1 air data source NOTE On the test set select the BOT ATC antenna Transponder 2 is mode C skips Mode S steps for check of Transponder 2...

Page 23: ...ipment 1 ATC Transponder Ramp Test Set TIC T 48 or T 49 2 RF through line wattmeter Bird model 43 or equivalent up to 500 watts C References 1 24 22 00 201 Manual Control 2 34 12 01 501 Air Data Compu...

Page 24: ...Mode S Comm Identity 11 Mode S Comm Altitude 12 Mode S Comm Short NOTE The Mode S Comm will be tested by the T 49 tester if the transponder is equipped with the capability If not the T 49 skips over...

Page 25: ...greater than 90 11 Push the TEST switch on the test set to run the ATCRBS C test a Make sure the test set shows the airplane s altitude and REPLY greater than 90 NOTE Make sure the reported altitude...

Page 26: ...e of the maximum power output and the minimum power output measured by the RF through line wattmeter during the mode S squitter transmission period 1 Make sure the minimum power output is 100 times or...

Page 27: ...aker b P6 Load Control Center Right 1 ATC 2 AC 2 ATC 2 DC 2 Remove the ATC antenna a Remove the screws that attach the ATC antenna to the airplane structure Fig 401 CAUTION Move the antenna only as fa...

Page 28: ...SWPM 20 20 00 a Make sure the resistance is not more than 0 001 ohm 4 Apply the weather aerodynamic sealant BMS 5 95 to the outer edge of the antenna AMM 51 31 00 201 5 Remove the unwanted sealant fro...

Page 29: ...MAINTENANCE MANUAL EFFECTIVITY PW245 34 53 11GA DRAWING GA KD28 ATC MM Page 403 Use and disclosure shall be in accordance with the proprietary legend located on the cover of this document Aug 15 10 AT...

Page 30: ...s Equipment Access Door C Procedure 1 Open these circuit breakers and attach DO NOT CLOSE tags a P18 Load Control Center Left 1 ATC 1 AC 2 ATC 1 DC 3 TCAS Speaker b P6 Load Control Center Right 1 ATC...

Page 31: ...l connectors 3 Install the ATC transponder AMM 20 10 07 201 4 Remove the DO NOT CLOSE tags and close these circuit breakers a P18 Load Control Center Left 1 ATC 1 AC 2 ATC 1 DC 3 TCAS Speaker b P6 Loa...

Page 32: ...DO NOT CLOSE tags a P18 Load Control Center Left 1 ATC 1 AC 2 ATC 1 DC b P6 Load Control Center Right 1 ATC 2 AC 2 ATC 2 DC 2 Do these steps to remove the ATC Control Panel a Loosen the quarter turn f...

Page 33: ...ot interchangeable d Tighten the quarter turn fasteners on the Control Panel 3 Remove the DO NOT CLOSE tags and close these circuit breakers a P18 Load Control Center Left 1 ATC 1 AC 2 ATC 1 DC b P6 L...

Page 34: ...1 ATC 2 AC 2 ATC 2 DC C Procedure 1 Remove the electrical connector from the ATC antenna switch 2 Remove the nuts and screws from the ATC antenna switch 3 Remove the ATC antenna switch 3 ATC Antenna S...

Page 35: ...P18 Load Control Center Left 1 ATC 1 AC 2 ATC 1 DC b P6 Load Control Center Right 1 ATC 1 AC 2 ATC 1 DC F ATC Antenna Switch Test 1 Supply electrical power AMM 24 22 00 201 2 Set the transponder selec...

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