Service difficulty report · Support · Boeing 73776N

Difficulty date
August 23, 2021
Submitted
October 4, 2021
Operation
Air carrier
Aircraft
N7822A
Make and model
Boeing 73776N
Aircraft serial
32596
Aircraft time
59,949 hours, 29,584 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

CORROSION ON FLOOR TO SIDEWALL SUPPORT FROM STA 727 TO STA 767; RBL 22; WL 154. ; / [01] UPDATED MEASUREMENTS; [02] CORROSION ON SUPPORT WAS FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY TO FASTENER HOLE PER SRM 53-00-53-1A-2 FIG 103 DETAIL D; [03] UPDATED STATEMENT OF CORRECTIVE ACTION BLOCK 1. CORROSION ON SUPPORT WAS FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY TO FASTENER HOLES PER SRM 53-00-53-1A-2 FIG 103 DETAIL D; [04] UPDATED STATEMENT OF CORRECTIVE ACTION BLOCKS 2 AND 3. CORROSION ON SUPPORT WAS FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY TO FASTENER HOLES PER SRM 53-00-53-1A-2 FIG 103 DETAIL D; [05] VERIFIED CORROSION ON SUPPORT WAS FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY TO FASTENER HOLES PER SRM 53-00-53-1A-2 FIG 103 DETAIL D; [06] REMOVED ACB FLOOR TO SIDEWALL SUPPORT AT BS727 - BS767; RBL22; WL154 PER SRM 51-40-02-0G-0; [07] LOCATED AND DRILLED ACB FLOOR TO SIDEWALL SUPPORT AT BS727 - BS767; RBL22; WL154 PER SRM 51-40-05-0G-0 AND DWG 146A7500; [08] VERIFIED CORRECTIVE ACTION 7.; [09] OK TO INSTALL RH FLOOR-TO-SIDEWALL SUPPORT; [10] INSTALLED FLOOR TO SIDEWALL SUPPORT BS 727 TO 767; RBL22; WL154 IAW SRM 51-40-02 AND DWG 146A0061; DWG 146A7502 AND DWG 146A7502; [11] VERIFIED INSTALLATION OF RH FLOOR-TO-SIDEWALL SUPPORT; BS 727-767; RBL 22; WL 154; PER SRM 51-40-02 AND DWG 146A0061 AND DWG 146A7502; [12] VERIFIED ALL WORK COMPLETE THIS TASK

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