Service difficulty report · Web · Boeing 7377CT

Difficulty date
October 25, 2022
Submitted
November 17, 2022
Operation
Air carrier
Aircraft
N569WN
Make and model
Boeing 7377CT
Aircraft serial
33656
Aircraft time
66,340 hours, 34,395 cycles
Part
Web
Condition
Cracked
Location
Zn 300 Stabilize
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

INTERNAL HORZ. PRESSURE DECK STA 663 TO STA 675 - 2 CRACKS NOTED TO BE .5'. ONE AT BS 666 LBL 31; AND THE SECOND AT BS 673 LBL 35. / [01] CUT AND REMOVED THE DAMAGED PART OF THE WEB AT INTERNAL HORZ. PRESSURE DECK STA 663 TO STA 675 BETWEEN LBL 30 AND LBL 60 IAW SRM 53-40-51-2R-2 REPAIR 2[07] FABRICATED -1 DOUBLER -4 -7 FILLERS FROM 2024T3 CLAD 0.080' LOT # 1497191-1 ; FABRICATED (7EA) -2 STIFFENERS FROM BAC1505-100052 7075-T6511 EXTRUSION LOT# 1494615-1 ; FABRICATED -3 REPLACEMENT WEB FROM 2024T3 ; 0.063' LOT #1497220-1 ; FABRICATED (3EA) -5 FILLERS FROM 2024T3 0.020' CLAD LOT # 1194858 ; FABRICATED -8 AND -9 FILLERS FROM 2024T3 0.063' CLAD LOT# 1497220-1 ; AND FABRICATED (3EA) -6 FILLERS FROM 2024T3 0.090' CLAD LOT# 1501154-1 AND FROM 2024T3 CLAD 0.020' LOT# 1194858 ; LOCATED AND DRILLED ALL REPAIR PARTS FOR INTERNAL HORZ. PRESSURE DECK STA 663 TO STA 675 LBL 30 TO LBL 60 IAW SRM 53-40-51-2R-2 REPAIR 2 ; OK TO TREAT AND PRIME[16] INSTALLED REPAIR PARTS PRESSURE DECK STA 663 TO STA 675 BETWEEN LBL 30 AND LBL 60 IAW SRM 53-40-51-2R-2 REPAIR 2 PART 4.L;[19] REPAIRED INTERNAL HORZ. PRESSURE DECK STA 663 TO STA 675 LBL 30 TO LBL 60 APPLIED A FILLET SEAL AND CIC AT THE REPAIR AREA IAW SRM 53-40-51-2R-2 REPAIR 2

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