Boeing Alert Requirements Bulletin 757-53A0123 RB: No revision named, part 3 of 4, text

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Page 1OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT

FLOOR BEAM

FRAME REPAIR ANGLE (NESTED S-18R

INSIDE INNER CHORD)

FRAME REPAIR

DOUBLER FRAME OUTER CHORD

NUT SPACER PLATES

MAY BE DIFFERENT

FOR EACH AIRPLANE FAILSAFE

CONFIGURATION CHORD LOCATION 10

1.0

FRAME TRIM LINE -S-19R CHORD FRAME INNER • BEAR STRAP

• SKIN

FRAME WEB

FRAME REPAIR FILLER S-20R INBD (VIEW IN THE FORWARD DIRECTION AT FRAME WITH

FRAME SEGMENT REPLACEMENT REPAIR) H-H N GENERAL VISUAL INSPECTION 3051190 FIGURE 13: RIGHT SIDE - STA 1640 FRAME INNER CHORD, WEB AND OUTER CHORD - GENERAL

VISUAL INSPECTION (GVI) (SHEET 10 OF 11) Original Issue: March 13, 2024 Export Controlled ECCN: 9E991 757-53A0123 RB See page 1 for details 140 of 178

Page 2Open in PDF

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for this figure.

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(a)(b)(c)--FRAMEInspect1

(d)(b)(c)--FRAMEInspect2

(a) Do a GVI for any approved frame segment replacement repair.

(b) It is not necessary to remove connecting frame structure to determine if a repair exists.

(c) A Maintenance records check is acceptable in lieu of the GVI inspection if the records review can conclusively determine a repair exists in that location.

(d) Do a GVI for any local repair.

FIGURE 13: RIGHT SIDE - STA 1640 FRAME INNER CHORD, WEB AND OUTER CHORD - GENERAL

VISUAL INSPECTION (GVI) (SHEET 11 OF 11) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: March 13, 2024 757-53A0123 RB 141 of 178 REQUIREMENTS BULLETIN 757-53A0123

ALERTALERT

Page 3OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT STA STA 1640 1640 STA 1620 S-8R - S-9R - S-10R - S-11R - LOWER S-13R HINGE

INTERCOSTAL S-14R S-16R FLOOR FWD S-17R - (VIEW IN THE OUTBOARD DIRECTION) FIGURE 14: RIGHT SIDE - FUSELAGE FRAME WEB AT STA 1640 BETWEEN S-9R AND S-10R - SURFACE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 1, APPROVED FRAME SEGMENT

REPLACEMENT REPAIR (SHEET 1 OF 3) Original Issue: March 13, 2024 Export Controlled ECCN: 9E991 757-53A0123 RB See page 1 for details 142 of 178

Page 4OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT S-9R

• SKIN

BRACKET (BRACKET MAY

NOT EXIST ON

SOME AIRPLANE _ CONFIGURATIONS)

FRAME REPAIR / DOUBLER

FRAME REPAIR BEAR STRAP

ANGLE (NESTED

INSIDE INNER CHORD)

FRAME OUTER CHORD

FRAME WEB

FRAME REPAIR FILLER FRAME TRIM LINE • UPPER HINGE

FITTING

FRAME INNER CHORD INBD (VIEW IN THE FORWARD DIRECTION AT FRAME WITH

FRAME SEGMENT REPLACEMENT REPAIR) A-A SURFACE HFEC INSPECTION 3045686 FIGURE 14: RIGHT SIDE - FUSELAGE FRAME WEB AT STA 1640 BETWEEN S-9R AND S-10R - SURFACE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 1, APPROVED FRAME SEGMENT

REPLACEMENT REPAIR (SHEET 2 OF 3) Original Issue: March 13, 2024 Export Controlled ECCN: 9E991 757-53A0123 RB See page 1 for details 143 of 178

Page 5Open in PDF

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for this figure.

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(a)(b)(c)--FRAME WEBInspect1

(a) Do a surface HFEC inspection around the rivet in the frame web at the plugged coordination hole (K-hole) in the frame for any crack, from the aft side of the frame, in accordance with 757 NDT Manual Part 6, 51-

00-19.

(b) The adjacent bracket may interfere with the inspection probe. It is acceptable to do the inspection partially around the fastener, stopping the probe at the point of interference with the bracket.

(c) Some airplane configurations may not have the K-hole at this location. The surface HFEC inspection is not required for any airplane with no plugged K-hole at this location.

FIGURE 14: RIGHT SIDE - FUSELAGE FRAME WEB AT STA 1640 BETWEEN S-9R AND S-10R - SURFACE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 1, APPROVED FRAME SEGMENT

REPLACEMENT REPAIR (SHEET 3 OF 3) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: March 13, 2024 757-53A0123 RB 144 of 178 REQUIREMENTS BULLETIN 757-53A0123

ALERTALERT

Page 6OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT STA STA 1640 1640 SIA 1620 S-8R • S-9R S-10R S-11R LOWER S-13R • HINGE

INTERCOSTAL S-14R- S-16R FWD FLOOR S-17R - (VIEW IN THE OUTBOARD DIRECTION) 3045690 FIGURE 15: RIGHT SIDE - FUSELAGE FRAME WEB AT STA 1640 BETWEEN S-9R AND S-10R - OPEN-HOLE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 1, NO EXISTING REPAIR (SHEET 1 OF 3) Original Issue: March 13, 2024 Export Controlled ECCN: 9E991 757-53A0123 RB See page 1 for details 145 of 178

Page 7OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT S-9R SKIN \

BRACKET (BRACKET MAY

NOT EXIST ON

SOME AIRPLANE

CONFIGURATIONS)

BEAR STRAP

FRAME OUTER CHORD

FRAME WEB

UPPER HINGE

FITTING

FRAME INNER CHORD INBD (VIEW IN THE AFT DIRECTION AT FRAME WITHOUT

FRAME SEGMENT REPLACEMENT REPAIR) A-A OPEN-HOLE HIGH FREQUENCY 3045691

EDDY CURRENT INSPECTION FIGURE 15: RIGHT SIDE - FUSELAGE FRAME WEB AT STA 1640 BETWEEN S-9R AND S-10R - OPEN-HOLE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 1, NO EXISTING REPAIR (SHEET 2 OF 3) Original Issue: March 13, 2024 757-53A0123 RB Export Controlled ECCN: 9E991 See page 1 for details 146 of 178

Page 8Open in PDF

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for this figure.

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(a)(b)1-FRAME WEBInspect1

(a) Do an open-hole HFEC inspection of the K-hole in the frame web for any crack in accordance with 757 NDT Manual Part 6, 51-00-04, 757 NDT Manual Part 6, 51-00-11 or 757 NDT Manual Part 6, 51-00-16.

(b) Some airplane configurations may not have the K-hole at this location. The open-hole HFEC inspection is not required for any airplane with no K-hole at this location.

FIGURE 15: RIGHT SIDE - FUSELAGE FRAME WEB AT STA 1640 BETWEEN S-9R AND S-10R - OPEN-HOLE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 1, NO EXISTING REPAIR (SHEET 3 OF 3) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: March 13, 2024 757-53A0123 RB 147 of 178 REQUIREMENTS BULLETIN 757-53A0123

ALERTALERT

Page 9OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT SIA STA 1640 1640 STA 1620 Le bale S-8R S-9R- S-10R • S-11R - LOWER S-13R HINGE

INTERCOSTAL S-14R S-16R FLOOR FWD S-17R - (VIEW IN THE OUTBOARD DIRECTION) FIGURE 16: RIGHT SIDE - FUSELAGE FRAME INNER CHORD AT STA 1640 BETWEEN S-10R AND S-11R

- SURFACE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 2, NO EXISTING REPAIR (SHEET 1 OF 3) Original Issue: March 13, 2024 757-53A0123 RB Export Controlled ECCN: 9E991 See page 1 for details 148 of 178

Page 10OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT STA 1640

INTERCOSTAL STRAP S-10R S-11R COVER PLATE FWD (VIEW IN THE OUTBOARD DIRECTION) COVER PLATE

INTERCOSTAL

FRAME STRAP INNER CHORD S-10R A-A

INTERCOSTAL STRAP FRAME INNER A SURFACE HFEC INSPECTION B-B CHORD 3045701 FIGURE 16: RIGHT SIDE - FUSELAGE FRAME INNER CHORD AT STA 1640 BETWEEN S-10R AND S-11R

- SURFACE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 2, NO EXISTING REPAIR (SHEET 2 OF 3) Original Issue: March 13, 2024 757-53A0123 RB Export Controlled ECCN: 9E991 See page 1 for details 149 of 178

Page 11Open in PDF

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY numbers shown below are the number of parts necessary for this figure.

More DataQtyIdentificationNameTaskStep

(a)--FRAME INNER CHORD Inspect1

(a) Do a surface HFEC inspection of the frame inner chord around each of the three fasteners for any crack in accordance with 757 NDT Manual Part 6, 51-00-19.

FIGURE 16: RIGHT SIDE - FUSELAGE FRAME INNER CHORD AT STA 1640 BETWEEN S-10R AND S-11R

- SURFACE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 2, NO EXISTING REPAIR (SHEET 3 OF 3) Export Controlled ECCN: 9E991 See page 1 for details Original Issue: March 13, 2024 757-53A0123 RB 150 of 178 REQUIREMENTS BULLETIN 757-53A0123

ALERTALERT

Page 12OCROpen in PDF

REQUIREMENTS BULLETIN 757-53A0123

ALERT ALERT STA STA 1640 1640 S-8R - S-9R • A Or B S-10R S-11R LOWER S-13R HINGE

INTERCOSTAL S-14R - S-16R FWD FLOOR S-17R - (VIEW IN THE OUTBOARD DIRECTION) 3045705 FIGURE 17: RIGHT SIDE - FUSELAGE FRAME WEB AT STA 1640 AND S-10R - OPEN-HOLE HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION - LOCATION 3 (SHEET 1 OF 4) Original Issue: March 13, 2024 Export Controlled ECCN: 9E991 757-53A0123 RB See page 1 for details 151 of 178

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