Service difficulty report · Frame · Boeing 7377BD

Difficulty date
March 6, 2023
Submitted
March 30, 2023
Operation
Air carrier
Aircraft
N556WN
Make and model
Boeing 7377BD
Aircraft serial
33936
Aircraft time
37,398 hours, 21,958 cycles
Part
Frame
Condition
Cracked
Location
Zn 100 Fus Lower
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 IN RADIUS OF FRAME CUTOUT; BS312; STR5 L/H AT DOOR CUTOUT HEADER FRAME<[01] REMOVED DAMAGE ON FRAME CUT OUT BS 312 S-5L; REWORKED AREAS: L=1.4' X W=.980' IAW SRM 51-10-02-0G-0;[02] VERIFIED CORRECTIVE ACTION STEP 1.;[03] REQ NDI CUT OUT FOR FREE CRACK CONDITION;[04] ACCOMPLISHED HFEC SURFACE SCAN 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;[05] FRAME UPPER CHORD WAS REPAIRED PER EA M-22-153-01244 ON TASK CARD TTG8Q00JFQ3U;[06] VERIFIED CORRECTIVE ACTIONS STEP 5.;[07] VERIFIED MEASUREMENTS TABLE.;[08] CERTIFY.

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