Service difficulty report · Support · Boeing 7377H4

Difficulty date
October 14, 2021
Submitted
November 2, 2021
Operation
Air carrier
Aircraft
N969WN
Make and model
Boeing 7377H4
Aircraft serial
41777
Aircraft time
32,404 hours, 19,718 cycles
Part
Support
Condition
Corroded
Location
Fuselage
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

AFT CARGO COMPARTMENT FLOOR TO SIDEWALL SUPPORT IS CORRODED AT WL 153; STA747+2; RBL 22; STA747+6; RBL22; STA747+10; RBL 22; STA747+14; RBL 22; STA747+15; RBL 20; STA 747+18; RBL22. ; / [01] REMOVED CORROSION AFT CARGO FLOOR TO SIDEWALL SUPPORT (BTW B/S 747 +2' TO B/S 747+18')WL 153 RBL 20 TO 22 IAW SRM 51-10-02 PARAGRAPH 15 EVALUATED ALL REWORKED AREAS; THE DEPPEST AREA : STA 747+18 RBL 22; DIMENSION L=1.' X W=.8'X DEPTH= 0.013' ORIGINAL TICKNESS 0.040' REMAINING THICKNESS 0.027' FOUND OUT ALLOWABLE DAMAGE LIMITS IAW SRM 53-00-53-1A-2 ALLOWABLE DAMAGE 2 FIGURE 103 DEATIL'E'.

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