Service difficulty report · Frame Splice · Boeing 7377H4

Difficulty date
August 2, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N491WN
Make and model
Boeing 7377H4
Aircraft serial
33867
Aircraft time
53,758 hours, 31,898 cycles
Part
Frame Splice
Condition
Corroded
Location
Bs 787 Rbl 25
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 FRAME SPLICE AT AFT CARGO BAY BS787 RBL25 WL158. ; / [01] EVALUATED CORROSION; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0; [02] VERIFIED CORRECTIVE ACTION ENTRY 1.; [03] REMOVED FRAME SPLICE CAP; BS 787; RBL25; WL 158 PER SRM 51-40-02-0G-0.; [04] LOCATED ; DRILLED ; DEBURRED NEW FRAME SPLICE CAP BS 787 RBL25 WL 158 PER SRM 51-40-05-0G-0; BOEING DWG 146A1262.; [05] VERIFIED CORRECTIVE ACTION #4.; [06] OK TO INSTALL FRAME SPLICE CAP; BS 787 RBL 25; WL 158.; [07] VERIFIED OK TO INSTALL FRAME SPLICE CAP; BS 787 RBL 25; WL 158.; [08] INSTALLED FRAME SPLICE CAP BS 787 RBL25 ; WL 158 PER SRM 51-40-02-0G-0; & DWG 146A1262.; [09] VERIFIED INSTALLED FRAME SPLICE CAP BS 787 RBL25 ; WL 158 PER SRM 51-40-02-0G-0; & DWG 146A1262.

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