Service difficulty report · Threshold · Boeing 737*

Difficulty date
October 7, 2021
Submitted
November 19, 2021
Operation
Air carrier
Aircraft
N450WN
Make and model
Boeing 737*
Aircraft serial
32470
Aircraft time
58,641 hours, 34,716 cycles
Part
Threshold
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

FSD THRESHOLD CRACKED AFT CORNER ; / [01] WELDED CRACK ON FSD SCUFF PLATE USING AMS 4954 TITANIUM FILLER ROD LOT # M798431 PER SRM 53-10-15-2R-2PARA 4.B. (3) AND (4)<BR>WELDING MACHINE E10583; S/N: KJ256554 12/2021; [02] VERIFIED CORRECTIVE ACTION 1.; [03] FLUORESCENT DYE PENETRANT INSPECTED REPAIRED AREA IN ACCORDANCE WITH SOPM 20-20-02 METHOD C.<BR>NO CRACKS NOTED.<BR><BR>TOOL I.D. ATS2504 (DLM-1000 RADIOMETER); [04] SANDED WELD REPAIR AREA PER SRM 53-10-15-2R-2 PARA 4.B.(6); [05] VERIFIED STEP 4.; [06] APPLIED PRIMER AND PARTING AGENT TO BACK OF THRESHOLD PER SRM 53-10-15-15-2R.; [07] ALL INSPECTION STEPS COMPLETE.