Service difficulty report · Support Angle · Boeing 73776N

Difficulty date
July 15, 2021
Submitted
August 10, 2021
Operation
Air carrier
Aircraft
N7723E
Make and model
Boeing 73776N
Aircraft serial
32670
Aircraft time
48,099 hours, 24,239 cycles
Part
Support Angle
Condition
Corroded
Location
Bs 852
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 ON SUPPORT ANGLE AT AFT CARGO BAY BS852 RBL23 WL164. ; / [01] REMOVED ANGLE AT AFT CARGO BAY BS852 RBL23 WL164.THIS PART DOES NOT HAVE ENTRY ON THE ALLOWABLE DAMAGE LIMITS THERE FOR IT HAS TO BE REPAIRED BY REPLACEMENT PER SRM 51-10-02 STEP 9; [02] REMOVED ANGLE AT AFT CARGO BAY BS852 RBL23 WL164.THIS PART DOES NOT HAVE ENTRY ON THE ALLOWABLE DAMAGE LIMITS THERE FOR IT HAS TO BE REPAIRED BY REPLACEMENT PER SRM 51-10-02 STEP 9; [03] REMOVED CORROSION ON INTERCOSTAL AT BS 852; RBL23; WL 164 PER SRM51-10-02-0G-0 MEASURE L=1'X W=0.75'X D=0.020' MAX. MAT LOSS IS 0.0020'; REMAINING THICKNESS IS 0.043'; ORIGINAL THICKNESS IS 0.063' FOUND TO BE OUT OF LIMITS;[05] FABRICATED SUPPORT ANGLE AT AFT CARGO BAY BS 848 TO BS 852 RBL 23 WL 164 FROM ITEM AND10134-1005#7075T73511 LOT #1464595-1 IAW SRM 51-40-05 AND DWG 146A8323 OK TO TREAT AND PRIMER; [06] VERIFIED FABRICATED SUPPORT ANGLE AT AFT CARGO BAY BS 848 TO BS 852 RBL 23 WL 164 FROM ITEM AND10134-1005#7075T73511 LOT #1464595-1 IAW SRM 51-40-05 AND DWG 146A8323 OK TO TREAT AND PRIMER; [09] INSTALLED NEW SUPPORT ANGLE AT AFT CARGO BAY BS 848 TO BS 852 RBL 23 WL 164 IAW SRM 51-40-02 AND DWG 146A83321;

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