Service difficulty report · Support · Boeing 7377H4

Difficulty date
August 11, 2021
Submitted
August 31, 2021
Operation
Air carrier
Aircraft
N965WN
Make and model
Boeing 7377H4
Aircraft serial
36677
Aircraft time
32,936 hours, 20,041 cycles
Part
Support
Condition
Corroded
Location
Bs 727-787
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 ON AFT CARGO COMPARTMENT FLOOR TO SIDEWALL SUPPORT FROM B.S. 727 TO 787; RBL 23; W.L. 156 ; / [01] REMOVED ACB R/H FLOOR TO SIDEWALL SUPPORT BS 727-787 PER SRM 51-40-02-0G-0; [02] REMOVED CORROSION FROM ACB R/H FLOOR TO SIDEWALL SUPPORT AT BS 787-3' MEASURED 3' X 1.5' DEPTH OF 0.025'. ORIGINAL THINKNESS OF 0.040' FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-1<BR><BR>CALIBRATED TOOL ID:<BR>DIAL DEPTH GAUGE <BR>ATS2472<BR>S/N:UNKNOWN<BR>06/2021<BR>06/2022; [03] VERIFIED PART REMOVAL AND OUT OF LIMITS CORROSION REMOVAL; [04] VERIFIED REMOVED CORROSION FROM ACB R/H FLOOR TO SIDEWALL SUPPORT AT BS 787-3' MEASURED 3' X 1.5' DEPTH OF 0.025'. ORIGINAL THINKNESS OF 0.040' FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-1<BR><BR>CALIBRATED TOOL ID:<BR>DIAL DEPTH GAUGE<BR>ATS2472<BR>S/N:UNKNOWN<BR>06/2021<BR>06/2022<BR>3. JERAD HEDAL (CERTIFIER); 12-AUG-2021 05:52 UTC; [05] RECEIVED NEW FLOOR TO SIDEWALL SUPPORT<BR>ITEM 146A7502-51<BR>PO# 830535/1; [06] LOCATED AND DRILLED NEW FLOOR TO SIDEWALL SUPPORT IAW SRM 51-40-05-0G-0 AND DWG 146A7502 REV:-; [07] OKAY TO INSTALL; [08] INSTALLED ACB FLOOR TO SIDEWALL SUPPORT FROM BS 727 TO BS 767 RBL 23 WL 156 IAW SRM 51-40-02-0G-0 AND DWG 146A7500 REV:-; [09] VERIFIED CORRECTIVE ACTION ENTRY 8.; [10] VERIFIED CARD COMPLETE; [11] UPDATED MEASUREMENTS

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