Copy · U.S. DOT/FAA - Boeing Service Bulletin A3515 · 41 pages

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Show pages 25–36

FIGURE 3: HORIZONTAL STABILIZER - REAR SPAR - UPPER INBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION 92.55 TO STABILIZER STATION 182.55 - INSPECTION December 19, 2007 A3515 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 37 of 41 BOEING SERVICE BULLETIN A3515

ALERT ALERT

FIGURE 3: HORIZONTAL STABILIZER - REAR SPAR - UPPER INBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION 92.55 TO STABILIZER STATION 182.55 - INSPECTION The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME IDENTIFICATION QTY MORE DATA 1 Inspect Forward Skin Flange - 2 (a)

(a) Do a Low Frequency Eddy Current (LFEC) inspection of the left and right side horizontal stabilizer rear spar upper inboard chord forward skin flange between stabilizer station 92.55 and 182.55 for any cracking.

Refer to 707, 720 NDT, Part 6, 55-10-07, Figure 8 as an accepted procedure.

A A

BALANCE BAY PANEL NO.2FWD INBD

UPPER CHORD

REAR SPAR PANEL NO.3

BALANCE BAY

RIGHT OPPOSITE

LEFT HORIZONTAL STABILIZER UPPER SURFACE SHOWN, A-A

173.55

STAB STA 1

INSPAR SKIN

182.55

STAB STA UPPER 92.55

STAB STA 496279 (SHEET 1 OF 1)

FIGURE 4: HORIZONTAL STABILIZER - REAR SPAR - LOWER OUTBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION 182.55 TO STABILIZER STATION 272.55 - INSPECTION December 19, 2007 A3515 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 38 of 41 BOEING SERVICE BULLETIN A3515

ALERT ALERT

FIGURE 4: HORIZONTAL STABILIZER - REAR SPAR - LOWER OUTBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION 182.55 TO STABILIZER STATION 272.55 - INSPECTION The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME IDENTIFICATION QTY MORE DATA 1 Inspect Forward Skin Flange - 2 (a)

(a) Do a Low Frequency Eddy Current (LFEC) inspection of the left and right side horizontal stabilizer rear spar lower outboard chord forward skin flange between stabilizer station 182.55 and 272.55 for any cracking.

Refer to 707, 720 NDT, Part 6, 55-10-07, Figure 8 as an accepted procedure.

A A FWD INBD

LOWER CHORD

REAR SPAR

LEFT HORIZONTAL STABILIZER LOWER SURFACE SHOWN,

RIGHT OPPOSITE A-A 1 LOWER

INSPAR SKIN

182.55

STAB STA

263.55 STAB STA272.55STAB STA 496285 (SHEET 1 OF 1)

FIGURE 5: HORIZONTAL STABILIZER - REAR SPAR - LOWER INBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION 92.55 TO STABILIZER STATION 182.55 - INSPECTION December 19, 2007 A3515 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 39 of 41 BOEING SERVICE BULLETIN A3515

ALERT ALERT

FIGURE 5: HORIZONTAL STABILIZER - REAR SPAR - LOWER INBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION 92.55 TO STABILIZER STATION 182.55 - INSPECTION The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME IDENTIFICATION QTY MORE DATA 1 Inspect Forward Skin Flange - 2 (a) (b)

(a) Do a Low Frequency Eddy Current (LFEC) inspection of the left and right side horizontal stabilizer rear spar lower inboard chord forward skin flange between stabilizer station 92.55 and 182.55 for any cracking.

Refer to 707, 720 NDT, Part 6, 55-10-07, Figure 8 as an accepted procedure.

(b) Exclude inspection of areas not accessible due to interference with any vortex generators mounted on the lower surface. However, if any cracks are found at any of the first six (6) inspectable fasteners on either side of the vortex generator, remove the vortex generator and inspect all fastener locations.

A A

LOWER CHORD

REAR SPAR INBD FWD 1 LOWER

INSPAR SKIN

92.55

STAB STA

173.55

STAB STA

182.55

STAB STA

LEFT HORIZONTAL STABILIZER LOWER SURFACE SHOWN, A-A

RIGHT OPPOSITE 496290 (SHEET 1 OF 1)

FIGURE 6: HORIZONTAL STABILIZER - REAR SPAR - LOWER INBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION -13.179 TO STABILIZER STATION 92.55 - INSPECTION December 19, 2007 A3515 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 40 of 41 BOEING SERVICE BULLETIN A3515

ALERT ALERT

FIGURE 6: HORIZONTAL STABILIZER - REAR SPAR - LOWER INBOARD CHORD - FORWARD SKIN FLANGE - STABILIZER STATION -13.179 TO STABILIZER STATION 92.55 - INSPECTION The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

STEP TASK NAME IDENTIFICATION QTY MORE DATA 1 Inspect Forward Skin Flange - 2 (a) (b)

(a) Do a Low Frequency Eddy Current (LFEC) inspection of the left and right side horizontal stabilizer rear spar lower inboard chord forward skin flange between stabilizer station -13.179 and 92.55 for any cracking.

Refer to 707, 720 NDT, Part 6, 55-10-07, Figure 8 as an accepted procedure.

(b) Exclude inspection of areas not accessible due to interference with any vortex generators mounted on the lower surface. However, if any cracks are found at any of the first six (6) inspectable fasteners on either side of the vortex generator, remove the vortex generator and inspect all fastener locations.

A A

LOWER CHORD

REAR SPAR INBD FWD

STAB STA -13.1791

STAB STA

92.55 LOWER

INSPAR SKIN

STAB STA

83.55

LEFT HORIZONTAL STABILIZER LOWER SURFACE SHOWN, A-A

RIGHT OPPOSITE 496349 (SHEET 1 OF 1)

APPENDIX A: CONFIGURATION VERIFICATION - INSPECTION RESULTS FORM - MATERIAL DATA December 19, 2007 A3515 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 41 of 41 BOEING SERVICE BULLETIN A3515

ALERT ALERT

APPENDIX A: CONFIGURATION VERIFICATION - INSPECTION RESULTS FORM - MATERIAL DATA AIRPLANE REGISTRY: FLIGHT HOURS: FLIGHT CYCLES:

LEFT SIDE Horizontal Stabilizer Stabilizer Part Number (a): Stabilizer Serial Number (a):

Spar Chord Segment Location Spar Chord Material (b):

(from Part 2 - Configuration Check) Upper Inboard Side of Body to SSTA 182.55 Lower Inboard Side of Body to SSTA 182.55 Upper Outboard SSTA 182.55 to Stabilizer Tip Lower Outboard SSTA 182.55 to Stabilizer Tip RIGHT SIDE Horizontal Stabilizer Stabilizer Part Number (a): Stabilizer Serial Number (a):

Spar Chord Segment Location Spar Chord Material (b) (from Part 2 - Configuration Check) Upper Inboard Side of Body to SSTA 182.55 Lower Inboard Side of Body to SSTA 182.55 Upper Outboard SSTA 182.55 to Stabilizer Tip Lower Outboard SSTA 182.55 to Stabilizer Tip

(a) Record the horizontal stabilizer part number and serial number as recorded on the data plate.

(b) Record spar chord material, 7079-T6 or 7075-T73511, as determined from maintenance record review, or electrical conductivity test. For the electrical conductivity test refer to 707 Non-Destructive Testing (NDT) Manual D6-48023 Part 6, 51-00-00, Figure 20, dated April 5, 2004, and Boeing Process Specification BAC5946, Table I, Page 12, Revision (AA) dated July 9, 2001.

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