Service difficulty report · Support · Boeing 737

Difficulty date
February 25, 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
Support
Condition
Corroded
Location
Fwd 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; FWD CARGO LH FLOOR TO SIDEWALL SUPPORT; UPPER SURFACE; BS 480 + 10 TO BS 500D; LBL 22 / [01] REMOVED CORROSION AT FWD CARGO L/H FLOOR TO SIDEWALL SUPPORT; UPPER SURFACE; MEASURES 1.- BS.500+4' L=2.' X W=1.' X D=0.008' 2.- BS.500A+15' L=1.5' X W=1.' X D=0.006' 3.- BS500C+17' L=3.' X W=2.' X D=0.010' MAX. MATERIAL LOSS IS 0.010' REMAINING THICKNESS IS 0.030' ORIGINAL THICKNESS IS 0.040' PER SRM 53-30-53-0I-2;BAC1496-444 TABLE 2 ITEM [1] FOUND TO BE OUT OF LIMITS REWORKED AREAS IAW SRM 53-00-53-1A-2. ALLOWABLE DAMAGE 2 PARAG.4.A.(2)(A) DETAIL E. USED TOOL: ATS 1671 S/N: 65093024; DUE DATE: 10/2022.;04] FABRICATED ;DRILLED AND LOCATED NEW SIDEWALL SUPPORT AND SPLICE TO BS 480+10 TO BS500D LBL22 WITH NEXT MATERIAL BAC1496-444#7075T62 LOT 1479718-1 I.A.W SRM 51-40-05-0G-0 ; SRM 51-40-02-0G-0 ; SRM 53-00-53-2R-6 AND DWG 143A7501 . OK TREAT AND PRIME.;[08] VERIFIED CORRECTIVE ACTION ENTRY 7.;[09] OK TO INTALL SPLICE;[10] VERIFIED OK TO INSTALL SPICE PLATE TO SIDEWALL SUPPORT;[11] INSTALLED SPLICE BS. 480+10 LBL22 ON SIDEWALL SUPPORT FCB .IAW SRM 53-00-53-2R-6 FIGURE 202;[15] INSTALLED FWD CARGO BAY FLOOR TO SIDEWALL SUPPORT ANGLE AT BS 396 TO BS 500D LBL 22;IAW SRM 53-00-53-2R-6.;[16] VERIFIED CORRECTIVE ACTION #15