Service difficulty report · Gusset · Boeing 7377H4

Difficulty date
July 30, 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
Gusset
Condition
Cracked
Location
Bs 500d S19r
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

FWD CARGO BAY AFT BULKHEAD SUPPORT GUSSET IS CRACKED BS500D S-19R WL193. MARKED ; / [01] REMOVED FCB AFT BLKHD GUSSET BS500D STR19R WL193 IAW SRM 51-40-02.; [02] LOCATED AND DRILLED NEW FWD CARGO BAY AFT BULKHEAD SUPPORT GUSSET P/N 143A9401-5 FOR BS 500D STR 19 R/H WL 193 IAW SRM 51-40-05-0G-0 OK TO INSTALL; [03] CORRECTION TO STEP 2 GUSSET PART # 143A9481-5; [04] VERIFIED CORRECTIVE ACTION ITEMS 1-3; OK TO INSTALL; [05] INSTALLED NEW FCB AFT BULKHEAD SUPPORT GUSSET AT BS 500D STR 19 R/H WL 193 IAW SRM 51-40-02-0G-0 AND BOEING DWG 143A7902; [06] VERIFIED CORRECTIVE ACTION ITEM 5; [07] APPLIED FILLET SEAL TO FCB AFT BULKHEAD SUPPORT GUSSET AT BS 500D STR 19 R/H WL 193 IAW AMM 51-31-00-390-804; [08] VERIFIED CORRECTIVE ACTION ITEM 7; [09] APPLIED CIC TO FCB AFT BULKHEAD SUPPORT GUSSET AT BS 500D STR 19 R/H WL 193 IAW AMM 51-21-91-620-802; [10] RII INSPECTED AND VERIFIED JOB COMPLETE ON CORRECTIVE ACTION ITEMS 5-9.; [11] VERIFIED JOB COMPLETE PER SRM 51-40-02 AND DWG 143A7902.

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