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Insert this Temporary Revision facing TASK Part 4, 53- 61- 142.
Record the incorporation of this Temporary Revision on the yellow RECORD OF TEMPORARY REVISIONS sheet at the front of this volume.
Keep this Temporary Revision until Revision 45 incorporates this information into the Nondestructive Testing Manual.
This Temporary Revision revises TASK Part 4, 53- 61- 142 SPECIAL
DETAILED INSPECTION OF THE ENGINE SUPPORT BEAM AND LOWER CAP ANGLES AT FS625.3 AND FS640.0 BETWEEN LBL36.2 AND RBL36.2 to introduce a new calibration reference standard (CRS) and make other miscellaneous changes.
TEMPORARY REVISION 53- 129 TR 53 - 129 53−61−142 of 11 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2
SPECIAL DETAILED INSPECTION OF THE ENGINE SUPPORT BEAM UPPER AND LOWER CAP ANGLES AT FS625.3 AND AT FS640.0, BETWEEN LBL36.2 AND RBL36.2 AWL 53−61−142
1. General A. The nondestructive testing procedure that follows is for the inspection of the engine support beam structure for subsurface cracks in the forward to aft direction at the locations that follow:
− The first two rows of fasteners in the upper and lower webs, the outboard webs, and the splice plates between FS625.30 and FS640.00, at WL111.09 and WL119.12 from BL0.00 to LBL42.50.
B. This procedure is applicable to the left side and the right side. The procedure for the left side is given. Differences for the right side are identified.
C. This inspection must be done by a Level II or Level III ultrasonic qualified individual certified to an NDT Standard approved by the National Airworthiness Authority.
2. Effectivity A. All aircraft Post−SB 601R-53-059 Rev. A or later, or A/C Serial Nos. 7783 to 8999.
3. Job Set−Up Information A. Tools and Equipment
REFERENCE DESIGNATION Panametrics Epoch lll Model 2300 Ultrasonic Flaw Detector with an A−Scan presentation TECHNA NDT Transducer Part number XA−455TMiniature angle beam transducer , 45 degrees refracted angle in Aluminum, 5.0 MHz, 0.375 in. (9.52 mm) H x
0.375 in. (9.52 mm) L x 0.260 in. (6.60 mm) W; Side Microdot Connector discharge machined notch, (MHI RJ Aviation ULC) Commercially available Coaxial cable (BNC to microdot) Commercially available Explosion proof light NOTE: If equivalent equipment is used, it must satisfy the requirements of the task and resolve the electrical discharge machined (EDM) notches of the calibration reference standard (CRS) at the required level of resolution and sensitivity.
B. Consumable Materials
REFERENCE DESIGNATION 05−178 Sonotech Ultrasonic Couplant Gel
EXCM601R30039 Calibration Reference Standard containing electrical of 11 TR 53 - 129 Page 2 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2 C. Parts Table 1−Modsum TC601R15054
ITEM DESCRIPTION DRAWING NUMBER MATERIAL 1 Upper Web 601−35006 2024−T3 AL ALY ALCD SH 2 Lower Web 601−35006 2024−T3 AL ALY ALCD SH 3 Upper Outboard Web 601−35006 2024−T3 AL ALY ALCD SH 4 Lower Outboard Web 601−35006 2024−T3 AL ALY ALCD SH 5 Upper Splice Plate 601R350066 7475−T7351 AL ALY 6 Lower Splice Plate 601R350066 7475−T7351 AL ALY Table 2−Modsum TC601R16135
ITEM DESCRIPTION DRAWING NUMBER MATERIAL 1 Upper Web 601R350079 2024−T3 AL ALY ALCD SH 2 Lower Web 601R350080 2024−T3 AL ALY ALCD SH 3 Upper Outboard Web 601−35006 2024−T3 AL ALY ALCD SH 4 Lower Outboard Web 601−35006 2024−T3 AL ALY ALCD SH 5 Upper Splice Plate 601R350066 7475−T7351 AL ALY 6 Lower Splice Plate 601R350066 7475−T7351 AL ALY Table 3−Modsum TC601R16257
ITEM DESCRIPTION DRAWING NUMBER MATERIAL 1 Upper Web 601−35006 2024−T3 AL ALY ALCD SH 2 Lower Web 601−35006 2024−T3 AL ALY ALCD SH 3 Upper Outboard Web 601R350092 2024−T3 AL ALY ALCD SH 4 Lower Outboard Web 601R350093 2024−T3 AL ALY ALCD SH 5 Upper Splice Plate 601R350066 7475−T7351 AL ALY 6 Lower Splice Plate 601R350099 2024−T3 AL ALY ALCD SH D. Reference Information
MANUAL NO REFERENCE DESIGNATION CSP A−001 AMM 49−11−01−000−801 Removal of the APU EnclosureAssembly CSP A−001 AMM 49−11−01−400−801 Installation of the APU EnclosureAssembly CSP A−010 TASK 51−20−04 (Part 1) Ultrasonic − InspectionProcedures E. Standard Practices Information
TR 53- 129 of 11Page 3 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2
MANUAL NO REFERENCE DESIGNATION CSP A−001 AMM 51−25−56−390−802 Water−DisplacingCorrosion−Inhibiting Compound CSP A−008 SRM 51−13−01 Defect and Damage RepairRequests − Report Procedure CSP A−008 SRM 51−26−00 Cleaning
4. Job Set−Up A. Obey all the ultrasonic inspection procedures (TASK 51−20−04 (Part 1)).
B. Open the access door that follows:
ACCESS DESIGNATION 311BB Aft equipment compartment door C. If necessary, remove the APU enclosure assembly (AMM 49−11−01−000−801).
D. Make sure that the inspection area is clean.
E. If necessary, remove the water−displacing corrosion−inhibiting compound (CIC) with a lint−free cloth and solvent.
F . If the finish in the inspection area is damaged or deteriorated, remove the finish.5.
Procedure A. Do the special detailed inspection for subsurface cracks in the engine support beam cap angle area (upper and lower) at FS640.00 and at FS625.00 between RBL36.20 and LBL36.20 as follows:
Refer to Figure 1 and Figure 2.
(1) Calibrate the equipment as follows:
(a) Connect the transducer with the coaxial cable to the ultrasonic instrument.
(b) Turn the instrument ON.
(c) Adjust and set the instrument controls to the calibration data settings for the CRS EXCM601R30039 at Transducer Position (TP1).
(d) Apply a thin even layer of couplant gel on the −3 web adjacent to the EDM notch A on the 0.620 in. (15.75 mm) angle edge distance side of CRS EXCM601R30039 at Transducer Position (TP1).
(e) Put the front of the transducer against the −4 angle and the sound beam is pointed at the EDM notch A.
(f) Adjust the transducer to get the maximum reflection signal from the EDM notch A by swivelling the transducer to and away from the EDM notch A.
(g) Adjust the GAIN control to get 80% full screen height (FSH) signal from the EDM notch A.
(h) Adjust the RANGE and DELAY controls to set the leading edge of the reflection signal from the EDM notch A at 2.6 of the horizontal limit on the baseline.
TR 53- 129 of 11Page 4 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2R efer to Figure 3, sheet 2.
(2) Examine the upper web (1), the upper outboard web (3), and the upper splice plate
(5) as follows:
NOTE: Refer to Table 1, Table 2, and Table 3 for the applicable modsum.
NOTE: The inspection of two fasteners of the upper web at the splice plate is done internally through the cut out holes in the aft web.
NOTE: A non−relevant indication from the fastener hole can show when the sound beam is aligned with the center of the fastener. The indication will show nearer to the initial pulse or left side of the screen than a discontinuity indication.
(a) Apply a thin even layer of couplant gel on the outer side of the upper web (1), the upper outboard web (3), the upper splice plate (5), and the inner side of the splice area, adjacent to all fasteners identified for the inspection.
(b) Put the transducer to the initial fastener of the upper web (1) with the front of the transducer against the edge of the angle at BL0.00.
(c) Scan forward and aft of the fastener with a small swivel movement to and away from the fastener.
NOTE: Use the edge of the rib as a transducer guide.
(d) Repeat the inspection for all fasteners identified for the inspection.
(3) Examine the lower web (2), the lower outboard web (4), and the lower splice plate (6) as follows:
NOTE: Refer to Table 1, Table 2, and Table 3 for the applicable modsum.
NOTE: The inspection of two fasteners of the lower web at the splice plate is done internally through the cut out holes in the aft web.
NOTE: A non−relevant indication from the fastener hole can show when the sound beam is aligned with the center of the fastener. The indication will show nearer to the initial pulse or left side of the screen than a discontinuity indication.
(a) Apply a thin even layer of couplant gel on the outer side of the lower web (2), the lower outboard web (4), the lower splice plate (6), and the inner side of the splice area, adjacent to all fasteners identified for the inspection.
(b) Put the transducer to the initial fastener of the lower web (2) with the front of the transducer against the edge of the angle at BL0.00.
(c) Scan forward and aft of the fastener with a small swivel movement to and away from the fastener.
NOTE: Use the edge of the angle as a transducer guide.
(d) Repeat the inspection for all fasteners identified for the inspection.
Refer to Figure 3, Sheet 3.
TR 53- 129 of 11Page 5 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2
(4) Do the indication evaluation as follows:
(a) Record all the indications of 40% FSH or greater.
(b) Compare the horizontal time baseline position of the indication with the horizontal time baseline position of the EDM notch signal on the CRS.
(c) Make sure that the indication is not from:
− the fastener hole − too much of couplant in front of the transducer − any other non−relevant factors.
(5) Do the acceptance and rejection criterias as follows:
(a) Any relevant indication with an amplitude signal of 40% FSH or more is classified as a crack and is cause for rejection.
B. If necessary, send a defect and damage report to MHI RJ Group (SRM 51−13−01).
6. Close Out:
A. Clean the ultrasonic couplant gel from the inspection surface.
B. If the finish in the inspection area was removed, replace the finish.
C. If necessary, apply water−displacing corrosion−inhibiting compound (CIC) to the applicable surfaces.
D. Remove all tools, equipment and unwanted materials from the work area.
E. If removed, install the APU enclosure assembly (49−11−01−400−801).
F . Close the access door that follows:
ACCESS DESIGNATION 311BB Aft equipment compartment door
TR 53- 129 of 11Page 6 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2 rnd5361149_006.dg, hg, jun24/2014
SCREEN DISPLAYINSTRUMENT SETTINGS FREQUENCY 5 MHz GAIN 40.0 dB RANGE 5.0 in.
REJECT 0% THICKNESS 0 PULSER High DAMPING 400 ohms WAVEFORM Fullwave 100% 50% 80% FSH 0
VELOCITY ANGLE
DELAY/ZERO
0.1232 in./ S 45 AL 0 S
FASTENER HOLE
SIGNAL EDM NOTCHA SIGNALINITIALPULSE (IP) 123456789 1 0 Calibration Data and Instrument Settings for CRS EXCM601R 30039. Figure 1
TR 53- 129 of 11Page 7 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2 rnd5361149_007.dg, hg, jun24/2014
0.250 in.
(6.35 mm)
EDM NOTCH (4 PLACES)
0.620 in.
(15.75 mm)
EDM NOTCH A
CHEM MILL LINE (REF) TRANSDUCER POSITION 1 (TP1) −3 WEB0.050 in.
(1.27 mm)
0.032 in.
(0.81 mm) −4 ANGLE −5 ANGLE Calibration Reference Standard EXCM601R30039 and Transducer Position Figure 2
TR 53- 129 of 11Page 8 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2 rnd5361142_008.dg, hg, oct16/2014 LBL
36.20 BL
0.00 RBL
36.20 FS625.30 FS640.00 WL111.09 WL119.12 RBL
42.50 RBL
27.50 RBL
18.00 RBL
9.50 LBL
9.50LBL
18.00 LBL
27.50 LBL
42.50 Special Detailed Inspection of the Engine Support Beam Cap Angle Area (Upper and Lower) at FS640.00 and at FS625.00 Between RBL36.20 and LBL36.20 − Inspection/Check Figure 3 (Sheet 1 of 3)
TR 53- 129 of 11Page 9 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2
1. Upper web.
3. Upper outboard web.
LEGEND Indicates scan areas Indicates inspection areas Indicates transducer positions, beam direction and movement rnd5361142_009.dg, hg, oct16/2014
SYMBOL INSPECT Examine the upper web and the upper outboard web externally on two sides of these fasteners.
Examine the upper splice plate externally on two sides of these fasteners.
TYPICAL TRANSDUCER PLACEMENT AND MOVEMENT
TWO SIDES OF FASTENERS TO BE INSPECTED
5. Upper splice plate.
Examine the upper splice plate externally and the upper web internally through cut−outs in the aft web on two sides of these fasteners.
TRANSDUCER
VIEW LKG DOWN
ON UPPER WEB OF ENGINE SUPPORT BEAM 3 5 1 FS625.30 FS640.00 Special Detailed Inspection of the Engine Support Beam Cap Angle Area (Upper and Lower) at FS640.00 and at FS625.00 Between RBL36.20 and LBL36.20 − Inspection/Check Figure 3 (Sheet 2 of 3)
LBL 36.20 LBL 27.50 LBL 18.00 LBL 9.50 BL0.00 TR 53- 129 of 11Page 10 Sep 15/23
NONDESTRUCTIVE TESTING MANUAL Part 4 − Ultrasonic Part 4 53−61−142 EFFECTIVITY: SEE PARAGRAPH 2
2. Lower web.
4. Lower outboard web.
LEGEND Indicates scan areas Indicates inspection areas Indicates transducer positions, beam direction and movement rnd5361142_010.dg, hg, jun24/2014
SYMBOL INSPECT Examine the lower web and the lower outboard web externally on two sides of these fasteners.
Examine the lower splice plate externally on two sides of these fasteners.
TYPICAL TRANSDUCER PLACEMENT AND MOVEMENT
TWO SIDES OF FASTENERS TO BE INSPECTED
6. Lower splice plate.
Examine the lower splice plate externally and the lower web internally through cut−outs in the aft web on two sides of these fasteners.
TRANSDUCER
VIEW LKG UP
ON LOWER WEB OF ENGINE SUPPORT BEAM 4 6 2 FS625.30 FS640.00 Special Detailed Inspection of the Engine Support Beam Cap Angle Area (Upper and Lower) at FS640.00 and at FS625.00 Between RBL36.20 and LBL36.20 − Inspection/Check Figure 3 (Sheet 3 of 3)
BL0.00 LBL 9.50 LBL18.00 LBL 27.50 LBL 36.20 TR 53- 129 of 11Page 11 Sep 15/23