Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
May 12, 2023
Submitted
June 20, 2023
Operation
Air carrier
Aircraft
N429WN
Make and model
Boeing 7377H4
Aircraft serial
33658
Aircraft time
66,602 hours, 39,316 cycles
Part
Sidewall Support
Part number
UNKNOWN
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

CORROSION ON FLOOR TO SIDEWALL SUPPORT AT ACB BS767 - BS727A RBL21 WL158.<[01] VERIFY APPLICABILITY PER SRM 53-60-53-0I-2 AND SRM 53-00-53-1A-2<BR>REMOVED CORROSION ON DISCREPANCY AREA L=3.5'; W=1.7'; D=0.007'. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 STEPS 4A(2)(A) FIG 103 TOOL USED ID:ATS2827 ; DUE:01/2024;[02] VERIFIED CORRECTIVE ACTION STEP 1.;[03] RECIVED NEW FLOOR TO SIDEWALL ITEM 146A7502-51 LOT 1519356/1 LOCATED AND DRILLED NEW FLOOR TO SIDEWALL AT BS 727 TO BS 767 WL 158; IAW 737-700 SRM 51-40-05-0G-0 DWG 146A7500.-;[04] VERIFIED CORRECTIVE ACTION 3;[05] VERIFIED MEASUREMENT TABLE;[06] UPDATE PART REQUIREMENT;[07] CARD COMPLETE

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