Service difficulty report · Web · Boeing 737

Difficulty date
February 26, 2022
Submitted
March 28, 2022
Operation
Air carrier
Aircraft
N238WN
Make and model
Boeing 737
Aircraft serial
34713
Aircraft time
53,117 hours, 31,534 cycles
Part
Web
Condition
Corroded
Location
Aft Cargo
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

CORROSION AFT CARGO SUB THRESHOLD WEB BS 787+8- BS 827+10 RBL 28 / [01] REMOVED AFT CARGO SUB THRESHOLD WEB CORRODED AT BS 794.37-847;IAW SRM51-40-02-OG-0;[02] REMOVED CORROSION ON AFT CARGO SUB THRESHOLD WEB FOUND PART TO BE OUT LIMITS MEASURE: L=1.200;W=.600;D=.006.IAW SRM 53-60-15-1A-1;PARAG 2B;FIG 103.MATERIAL ID:7075-T62;0.045.IAW SRM 53-60-15-OI-1.TOOL USED:ID:ATS2472;S/N:UNKNOWN;DUE:12/2022.;[03] VERIFIED CORRECTIVE ACTION 2.;[04] LOCATED AND DRILLED NEW SUB THRESHOLD WEB WITH P/N 146A8123U25;LOT# 1473980-1;IAW SRM 51-10-05-OG-0 AND DWG# 146A8340.OK TO ENAMEL PAINT AND INSTALL.;[05] VERIFIED CORRECTIVE ACTION 4.<BR><BR>OK TO PAINT ***ONLY***;[06] OK TO INSTALL;[07] VERIFIED OK TO INSTALL WEB;[08] INSTALLED ON AFT CARGO SUBTHRESHOLD WEB BS794.37 TO BS847 RBL 28 IAW SRM 51-40-02 AND DWG 146A8340;[09] PRIOR TO INSTALLATION; APPLICATION OF FINISH WAS ACCOMPLISHED ON FAULT #TTG8Q004FGRN;[10] VERIFIED CORRECTIVE ACTIONS 8 AND 9.;[11] UPDATED MEASURES BLOCK FOR PART NUMBER; N/A'S TO NOT USED AND REPAIR TYPE TO MINOR.