Service difficulty report · Floorbeam · Boeing 737436

Difficulty date
December 24, 2019
Submitted
January 8, 2020
Operation
Air carrier
Aircraft
N401YK
Make and model
Boeing 737436
Aircraft serial
25860
Aircraft time
57,186 hours, 36,394 cycles
Part
Floorbeam
Part number
65458078
Condition
Cracked
Location
Fuselage
Stage of operation
IN
How discovered
V
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

BS660 - BS666, FLOOR BEAM LOWER CHORD, LBL24.82 CRACK INDICATION IN FORWARD HOLE. RBL24.82 CRACK INDICATIONS IN FORWARD AND AFT HOLES. UPSIZE TO REMOVE CRACK IAW SB737-57A1296