Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
May 31, 2023
Submitted
July 5, 2023
Operation
Air carrier
Aircraft
N962WN
Make and model
Boeing 7377H4
Aircraft serial
36963
Aircraft time
38,452 hours, 23,554 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

FLOOR TO SIDE WALL SUPPORT HAS CORROSION AT BS 767+3; RBL 22; WL 156<[01] REMOVED FWD SHIELD BS 767 -793 I.A.W SRM 51-40-02-0G-0.;[02] CORROSION ON AFT CARGO BAY FWD DOOR SHIELD AT RBL 22 BS 767+3 WL 156; P/N 146A8127-12; AREA OT= 0.050'; RT=0.044'; X=0.006'; L=1.200'' W=0.800'' WITH DEPTH GAGE ID: ATS2473<BR>S/N: UNKNOWN<BR>DATE:08/2022<BR>DUE:08/2023<BR> VERIFIED APPLICABILITY OF SRM 53-60-15-0I-1 IDENTIFICATION AND SRM 53-60-15-1A-1 ALLOWABLE DAMAGE FOUND TO BE OUT LIMITS DUE TO NO ALLOWABLE DAMAGE IN SRM; IT WILL BE REPAIRABLE BY REPLACEMENT I.A.W SRM 51-10-02-0G PAR 9C.LOCATED AND DRILLEDIAW SRM 51-40-05 AND DWG146A8127.<BR>OK TO APPLY ENAMEL;[05] VERIFIED CORRECTIVE ACTION 1<BR>OK TO APPLY ENAMEL GIVEN;[06] APPLIED ONE COAT OF BMS10-11 TYPE II ENAMEL (P/N BAC702GL) AT FLOOR TO SIDEWALL SUPPORT (SHIELD) AT BS 767 - BS 793 RBL 22 WL 156 IAW SOPM 20-41-02.<BR>OK TO APPLICATION CIC;[07] VERIFIED CORRECTION ACTION ITEM 6 OK TO APPLY CIC GIVEN.;[08] APPLIED ONE LAYER OF BMS 3-23; TYPE II COMPOUND INHIBITING CORROSION FLOOR TO SIDEWALL SUPPORT (SHIELD) BS767 TO BS793 RBL22 WL156 I.A.W SRM 51-20-01.<BR>TIME OF APPLICATION :12-JUN-2023 18:08 UTC;[09] OK TO INSTALL;[10] OK TO INSTALL FWD SHIELD SUPPORT GIVEN.;[11] INSTALLED FLOOR TO SIDEWALL SUPPORT (SHIELD) BS767 TO BS 793 RBL22 WL 156 IAW SRM 51-40-02 AND DWG 146A0081;[12] VERIFIED CORRECTIVE ACTION 11 AND MEASUREMENT TABLE

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