Service difficulty report · Gusset · Boeing 7377H4

Difficulty date
August 26, 2021
Submitted
September 22, 2021
Operation
Air carrier
Aircraft
N228WN
Make and model
Boeing 7377H4
Aircraft serial
32496
Aircraft time
53,078 hours, 31,709 cycles
Part
Gusset
Condition
Cracked
Location
Bs 500d
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

CRACK GUSSET LOCATED BS500D AND STR19R FWD CARGO COMPARTMENT ; 2021-392157 / [01] EVALUATED DAMAGE ON GUSSET AND NOT FOUND ALLOWABLE DAMAGE LIMITS IN SRM B737-700; REMOVED GUSSET AND FASTENERS IAW B737-700 SRM 51-40-02 AND PERFORMED VISUAL INSPECTION ON COMMON AREA OF REMOVED PART AND NOT FOUND ANY DAMAGE; LENGTH OF CRACK IS 0.348 TOOL USED DIGITAL CALIPER P/N: DIGITAL 150; S/N: AE-412604; DUE DATE: 28/MAY/22; [02] STEP 1 COMPLETE; [03] DRILLED NEW GUSSET IAW B737-700 SRM 51-40-05 AND APPLIED PROTECTIVE TREATMENT ON NEW HOLES IAW 51-20-01; [04] OK TO INSTALL NEW GUSSET AND FASTENERS GRANTED; [05] STEP 3 AND STEP 4 COMPLETE.. RII ITEM; [06] INSTALLED NEW GUSSET AND FASTENERS LOCATED BS500D AND STR19R FWD CARGO COMPARTMENT IAW B737-700 SRM 51-40-02 AND DWG:143A7902 SHEET:174 REV:-; [07] STEP 6 COMPLETE.RII; [08] REPLACED GUSSET AND FASTENERS LOCATED BS500D AND STR19R FWD CARGO COMPARTMENT IAW B737-700 SRM 51-10-02 ITEM 9; SRM 51-40-02 AND DWG:143A7902 SHEET:174 REV:-; [09] VERIFIED STEP 8; RII

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