Service difficulty report · Threshold · Boeing 7377H4

Difficulty date
August 8, 2024
Submitted
August 9, 2024
Operation
Air carrier
Aircraft
N939WN
Make and model
Boeing 7377H4
Aircraft serial
36646
Aircraft time
49,642 hours, 30,155 cycles
Part
Threshold
Condition
Cracked
Location
Zone 100
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

FWD CARGO DOOR THRESHOLD BULLNOSE HAS A CRACK AT THE ORIGINAL DENT DAMAGE LOCATION. SEE ATTACHED IMAGE.<[01] REMOVED BULLNOSE THRESHOLD CHORD PER SRM 51-40-02;[02] REMOVED DAMAGE BY BLENDING PER SRM 51-10-02.;[03] PERFORMED NDT HFEC SURFACE INSPECTION PER NDT PART 6; 51-00-00-00 PROCEDURE 23 AND VERIFIED DAMAGE IS COMPLETELY REMOVED.;[04] MACH DRILLED REPLACEMENT COURT BULLNOSE AT FWD CARGO DOOR THRESHOLD PER SRM 51-40-05.;[05] INSPECTION VERIFIED CORRECTIVE ACTION TAKEN IN STEP 4. OK TO INSTALL FORWARD CARGO BULLNOSE CHORD.;[06] REMOVED; DEBURRED; CLEANED; PREPPED; INSTALLED WET WITH SEALANT AND WET INSTALLED FASTENERS PER SRM 51-40-02.;[07] VERIFIED CORRECTIVE ACTION TAKEN IN STEP 6. OK TO CIC FORWARD CARGO BULLNOSE CHORD.

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