Service difficulty report · Attach Angle · Boeing 7377H4

Difficulty date
April 25, 2023
Submitted
May 25, 2023
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
38,285 hours, 23,370 cycles
Part
Attach Angle
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 AFT CARGO BAY RAIL TO FRAME ATTACH ANGLE AT RBL 8 BS 947+1 WL 174.<[01] EVALUATED DAMAGE ON AFT CARGO BAY RAIL TO FRAME ATTACH ANGLE AT RBL 8 BS 947+1 WL 174 FOUND TO BE OUT OF LIMIT DUE NOT LIMITS IN SRM PART WILL BE REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0;[02] REMOVED ON AFT CARGO BAY RAIL TO FRAME ATTACH ANGLE AT RBL 8 BS 947+1 WL 174; IAW SRM 51-40-02-0G-0;[OUT OF LIMITS.;[04] FORMED ATTACH ANGLE AT RBL 8 BS 947+1 WL 174 ITEM 7075#O .063 LOT#5057680 PER DWG 147A7580 REV:-BRECIVED FROM OSS FORMED ANGLE; MATERIAL 7075 T0 0.063' TO T62 CONDITION LOT# 1527265-1 CUSTOMER RO NO 918739-SWA;[13] FABRICATED; LOCATED AND DRILLED NEW AFT CARGO BAY RAIL TO FRAME ATTACH ANGLE AT BS 947 RBL 8 LOT# 1527265-1 CUSTOMER RO NO 918739-SWA IAW SRM 51-40-05-0G-0 AND DWG 147A7580; APPLIED CHEMICAL CONVERSION COATING IAW SRM 51-20-01-0G-0 OK TO PRIMER;[14] VERIFIED CORRECTION ACTION 12 AND 13; OK TO APPLY PRIMER.;[15] APPLIED PRIMER ON NEW AFT CARGO BAY RAIL TO FRAME ATTACH ANGLE; IAW SOPM 20-41-02 OK TO INSTALL;[16] VERIFIED CORRECTION ACTION ITEM 15; OK TO INSTALL GIVEN.;[17] INSTALLED NEW AFT CARGO BAY RAIL TO FRAME ATTACH ANGLE AT BS 947 RBL 8 WL 174 IAW SRM 51-40-02-0G-0 DWG 147A7580 AND 147A7500; CARD IS COMPLETED;[18] VERIFIED INSTALLATION OF NEW AFT CARGO BAY RAIL TO FRAME ATTACH ANGLE AT BS 947 RBL 8 WL 174 IAW SRM 51-40-02-0G-0 DWG 147A7580 AND 147A7500;[19] UPDATED MEASUREMENTS TABLE ITEM 21 LEVEL 2;[20] VERIFIED MEASUREMENT TABLE

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