Service difficulty report · Frame · Boeing 7378H4

Difficulty date
June 22, 2023
Submitted
July 18, 2023
Operation
Air carrier
Aircraft
N8543Z
Make and model
Boeing 7378H4
Aircraft serial
63587
Aircraft time
19,500 hours, 9,726 cycles
Part
Frame
Part number
UNKNOWN
Condition
Cracked
Location
Zn 200 Fus Top
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

BS 328 FRAME CRACKED AT LOWER END JUST ABOVE FWD ENTRY DOOR UPPER SILL WEB LBL 40 WL 284.<[01] NO ALLOWABLE DAMAGE PERMITTED PER SRM 53-00-07-1A-1 ALLOWABLE DAMAGE 1 PAR 4.A <BR>DISCREPANCY TO BE CONFIRMED BY HFEC;REMOVE I.A.W SRM 51-10-02-0G-0 AND CONTACT ENGINEERING FOR REPAIR INSTRUCTIONS.;[02] ACCOMPLISHED HFEC SURFACE SCAN ON SUSPECTED CRACK AREA IAW 737 NDTM PART 6 CHAPTER 51-00-00 PROCEDURE 23. NO CRACKS NOTED.<BR><BR>EQUIPMENT USED: NORTEC 600 ID: ATS1465 CAL DUE: 09/2023;[03] AFTER FURTHER INVESTIGATION AND INSPECTED WITH NDI HFEC EQUIPMENT NO CRACK FOUND ON DISCREPANCY AREA;NO FURTHER ACTION NEEDED.;[04] VERIFIED STEPS 1; 2; 3.;[05] VERIFIED STEPS 1; 2; 3.

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