Service difficulty report · Door Sill · Boeing 7377H4

Difficulty date
March 10, 2022
Submitted
April 8, 2022
Operation
Air carrier
Aircraft
N468WN
Make and model
Boeing 7377H4
Aircraft serial
33858
Aircraft time
58,378 hours, 34,580 cycles
Part
Door Sill
Condition
Cracked
Location
L1 Door
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 ON EDGE BS 312 FRAME AT FWD ENTRY DOOR UPPER SILL LBL 33 WL 298. / [01] ACCOMPLISHED HFEC INSPECTION OF CRACK MARKED END IAW 737 NDTM PART 6; 51-00-00 PROCEDURE 23 TOOL# IS000450;[02] REMOVED DAMAGED AREA ON BS312 FRAME AT FWD ENTRY DOOR UPPER SILL BETWEEN STR5L-6L WL298 LBL33 BY TRIM OUT I.A.W SRM 51-10-02-0G-0;[03] REQUEST HFEC TO VERIFY CRACK FREE CONDITION ON TRIM OUT AREA.;[04] VERIFIED CORRECTIVE ACTION STEP 2.;[05] HFEC INSPECTED CUT EDGE IAW 737 NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED. EQUIP USED: NORTEC 600 ID: ATS1465;[06] PERFORMED .040 INSURANCE CUT PER SRM 53-10-07-2R-1 STEP 4 -D;[07] PERFORMED DVI OF UNDERLYING STRUCTURE CRACKS;DEFORMATION OR OTHER DAMAGE IN REPAIR AREA PER SRM 53-10-07-2R-1 STEP 4-F NO FIRTHER DAMAGE NOTED;[08] VERIFIED CORRECTIVE ACTIONS 6 AND 7.;[09] REPAIRED DAMAGE ON EGE OF BS 312 FRAME AT FWD ENTRY DOOR UPPER SILL; LBL 33; WL 298 PER EA 22-153-00851.;[10] EDITED MEASUREMENT TABLE.;[11] CERTIFIED EDIT.;[12] VERIFIED CORRECTIVE ACTIONS STEP 9.

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