Service difficulty report · Web · Boeing 73776Q

Difficulty date
April 11, 2023
Submitted
May 9, 2023
Operation
Air carrier
Aircraft
N551WN
Make and model
Boeing 73776Q
Aircraft serial
30280
Aircraft time
66,624 hours, 41,198 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 - HORIZONTAL PRESSURE DECK WEB STA 663 TO STA 675 - LBL 30 TO LBL 45. MULTIPLE CRACKS NOTED. MARKED AREAS.<[01] SRM 53-40-51-2R-2 REPAIR 2 IS APPLICABLE TO THIS A/C;[02] CUT AND REMOVED THE DAMAGED PART OF WEB IAW SRM 53-40-51-2R-2 REPAIR 2 STEP 4C(3) VIEW B FIGURE 203;[09] FABRICATED A -1 DOUBLER AND -4 & -7 FILLERS FROM 2024T3#0.080' CLAD LOT#1497191-1; -2 (7EA) STIFFERNERS FROM BAC1505-100052 7075-T6511 EXTRUSION LOT#1508574-1; -3 WEB AND -8 & -9 FILLERS FROM 2024T3#0.063' CLAD LOT# 1524605-1; -6 (3EA) FILLERS FROM 2024T3#0.090' CLAD LOT# 1501154-1 PLUS 2024T3#0.020 CLAD LOT# 1515185-1; -5 (3EA) FILLERS FROM 2024T3#0.020' CLAD LOT# 1515185-1 IAW SRM 53-40-51-2R-2 REPAIR 2. OK TO TREAT AND PRIME REPAIR PARTS;16] INSTALLED REPAIR PARTS IAW SRM 53-40-51-2R-2 REPAIR 2;[17] VERIFIED CORRECTION ACTION ITEM 16.;[18] VERIFIED ALL CORRECTION ACTIONS CARD COMPLETE.

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