Service difficulty report · None · Boeing 737

Difficulty date
March 31, 2022
Submitted
April 29, 2022
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 737
Aircraft serial
32474
Aircraft time
59,744 hours, 35,276 cycles
Part
None
Condition
Cracked
Location
Fuselage
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 B.S. 312 FRAME JUST ABOVE FORWARD ENTRY DOOR CUT OUT. / [01] VERIFIED SRM 53-00-07-1A-1 IS APPLICABLE FOR DAMAGE ON A FRAME;[02] CRACK IN BS 312 FRAME FOUND TO BE OUT OF LIMITS PER SRM 53-00-07-1A-1 FIG. 102 DETAIL E;[03] REQUEST NDI TO MARK END OF CRACK;[04] HFEC INSPECTED FRAME BS312 AND MARKED END OF CRACKED AS REQUESTED IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23. <BR>EQUIP USED: NORTEC 600 ID: ATS1465;[05] VERIFIED CORRECTIVE ACTION 1 AND 2.;[06] TRIMMED .400' FROM EDGE OF BS 312 FRAME TO REMOVE CRACK; MAINTAINING .5' RADIUS PER SRM 51-10-02;[07] REQUEST NDI TO HFEC TRIMMED EDGE TO ENSURE A CRACK FREE CONDITION;[08] HFEC INSPECTED TRIMMED EDGE IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23. <BR>EQUIP USED: IS000450 500D;[09] VERIFIED ITEM 6 CORRECTIVE ACTIONS.;[10] ADDITION TO ACTION 8; NO CRACKS FOUND.;[11] CARD COMPLETE;[12] VERIFIED COMPLETE