Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
August 4, 2021
Submitted
August 23, 2021
Operation
Air carrier
Aircraft
N964WN
Make and model
Boeing 7377H4
Aircraft serial
36965
Aircraft time
32,901 hours, 20,020 cycles
Part
Support Angle
Condition
Corroded
Location
Bs 500d
Stage of operation
IN
How discovered
V
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 AT FWD CARGO BAY ON AFT BULKHEAD TO FLOOR SUPPORT ANGLE BS500D LBL18 TO RBL20 WL157. ; / [01] NO ALLOWABLE DAMAGE LIMTOS FOUND IN SRM FOR FCB AFT CENTER BULKHEAD SUPPORT; PART TO BE REPAIRED BY REPLACEMENT PER SRM 51-10-02; [02] UPDATED MEASUREMENTS; [03] OUT OF LIMITS; [04] VERIFIED CORRECTIVE ACTIONS 1 THRU 3. <BR><BR>PART OUT OF LIMITS. WILL BE REPLACED.; [05] LOCATED AND DRILLED FCB LOWER BULKHEAD SUPPORT BS500D LBL20-RBL20 WL 157 IAW SRM 51-40-05; BOEING DWG# 143A9481 AND BOEING DWG# 143A7902.; [06] VERIFIED LOCATING AND DRILLING OF NEW PART PER SRM AND DWG.; [07] MAINTENANCE COMPLETED. OK TO REINSTALL; [08] REQUEST OK TO INSTALL; [09] VERIFIED OK TO INSTALL FCB LOWER BULKHEAD SUPPORT BS500D LBL20-RBL20.; [10] INSTALLED LWR BULKHEAD SUPPORT ANGLE AT FCB BS500D BETWEEN LBL20 TO RBL20 IAW SRM 51-40-02 AND DWG# 143A9481 AND BOEING DWG# 143A7902.; [11] INSTALLED LWR BULKHEAD SUPPORT ANGLE AT FCB BS500D BETWEEN LBL20 TO RBL20 IAW SRM 51-40-02 AND BOEING DWG# 143A9481 REV.0 AND BOEING DWG# 143A7902 REV.0; [12] CORRECTION FOR ITEMS 10-11- INSTALLED LWR BULKHEAD SUPPORT ANGLE AT FCB BS500D BETWEEN LBL20 TO RBL20 IAW SRM 51-40-02 AND BOEING DWG# 143A9481 REV:- AND BOEING DWG# 143A7902 REV:-.

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