S 016-120-N00
(2)
Open the fan cowl panels (AMM 71-11-04/201).
S 046-121-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(3)
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
(4)
Open the core cowl panels (AMM 71-11-06/201).
S 016-122-N00
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No. 12 - Prepare for the Borescope Inspection
_____________________________________________
S 016-123-N00 WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(5) Open the thrust reversers (AMM 78-31-00/201).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
ACCESS PORT FROM REAR CLOCKWISE POSITION ANGULAR PART(S) IN VIEW FOR INSPECTION INCH (mm) PROBE DIAMETER RECOMMENDED MAX NOTES
THRU FAN ALL LPC COMPRESSOR INLET 1ST C-BLADE 1ST C-VANE
AP-1 245` FRONT OF 4TH C-VANE REAR OF 4TH C-BLADE ----- 1
AP-2 233` REAR OF 5TH C-BLADE FRONT OF 6TH C-BLADE 0.270 (6.8)
AP-3 231` FRONT OF 7TH C-BLADE REAR OF 6TH C-BLADE 0.270 (6.8)
AP-4 127` FRONT OF 9TH C-BLADE REAR OF 8TH C-BLADE 0.270 (6.8)
AP-5 214` FRONT OF 11TH C-BLADE REAR OF 10TH C-BLADE 0.270 (6.8)
AP-6 98` FRONT OF 13TH C-BLADE REAR OF 12TH C-BLADE 0.270 (6.8)
AP-7 80` FRONT OF 15TH C-BLADE REAR OF 14TH C-BLADE 0.270 (6.8)
AP-8 277` CHAMBER, 1ST TURBINE VANE FUEL NOZZLE, COMBUSTION 0.444 (11.3)
AP-8 225` 45`,128`, CHAMBER, 1ST TURBINE VANE FUEL NOZZLE, COMBUSTION 0.444 (11.3)
AP-8 172` FUEL NOZZLE, COMBUSTION CHAMBER, 1ST TURBINE VANE 0.444 (11.3) 2
AP-8 338` FUEL NOZZLE, COMBUSTION CHAMBER, 1ST TURBINE VANE 0.444 (11.3) 3
AP-9 93` FRONT OF 1ST T-BLADE FRONT OF 1ST T-VANE 0.270 (6.8)
AP-10 139` REAR OF 2ND T-BLADE FRONT OF 3RD T-VANE 0.270 (6.8)
AP-11 215` FRONT OF 2ND T-BLADE REAR OF 1ST T-BLADE 0.444 (11.3) 4
CASE STRUTS THRU EXHAUST ALL 6TH T-VANE 6TH T-BLADE
ACCESS IS THROUGH FOURTEEN 2.5 BLEED VALVE OPENINGS
IN FAN EXIT CASE LINER. A FLEXIBLE PROBE IS NECESSARY AT THIS ACCESS PORT.
RIGHT ANGLE EYEPIECE IS NECESSARY.
RIGHT ANGLE EYEPIECE IS RECOMMENDED.
OPTIONAL BORESCOPE PORT LOCATION.
Borescope Access Port Data
Figure 608 (Sheet 1)
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AP-1
(14 LOCATIONS) AP-8
AP-8 (338`)
(277`)
FAN THRU AP-2 AP-3 AP-5 (225`) AP-8 AP-11 (215`) L-A3032 EXHAUST THRU
____NOTE: SHOWN FOR CLARITY. QEC EQUIPMENT NOT
(LEFT SIDE) BORESCOPE ACCESS PORT LOCATIONS
Borescope Access Port Data
Figure 608 (Sheet 2)
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