Service difficulty report · Web · Boeing 7377H4

Difficulty date
March 8, 2023
Submitted
April 17, 2023
Operation
Air carrier
Aircraft
N220WN
Make and model
Boeing 7377H4
Aircraft serial
32491
Aircraft time
58,003 hours, 34,631 cycles
Part
Web
Condition
Corroded
Location
Zn 100 Fus Lower
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

FOUND SEVERAL SPOTS OF LIGHT SURFACE CORROSION AT AFT WET AREA FROM STA 1016+ UNDER FLOOR PANEL 241AEF. DOT 82-001 CORROSION AT FLOOR SURFACE FIXED SKIN FROM STA 1016 TO STA 1040 FROM LBL 0 TO LBL 40 WL 208.1.<[01] NO DAMAGE PERMITTED AT WEB AREA AS PER REFERENCE SRM 53-70-51-1A-1. FOUND OUT OF LIMITS.;[02] REMOVED AFT WET AREA FLOOR WEB FROM STA 1006 TO STA 1016 BL0 TO LBL 34 AS PER REFERENCE SRM 51-40-02-0G-0.;[03] VERIFIED STEP #1 AND #2.;[04] APPLIED FILLET SEALANT AT EDGE AREA OF AFT WET AREA FROM STA 1006 THRU STA 1016 WEB PER B737-700 AMM 51-31-00-390-804;[05] REMOVED AND REPLACED FLOOR WEB AT AFT WET AREA STA 1006 TO STA 1016 BL0 TO LBL 34 AS PER REFERENCE SRM 51-40-02-0G-0.

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