Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
January 4, 2022
Submitted
February 4, 2022
Operation
Air carrier
Aircraft
N452WN
Make and model
Boeing 7377H4
Aircraft serial
29846
Aircraft time
60,081 hours, 35,724 cycles
Part
Floorbeam
Part number
147A55068
Condition
Corroded
Location
Cabin Floor
Stage of operation
UK
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

CORROSION SPOT ON AFT CABIN WET AREA FLOORBEAM UPPER FLANGE AT BS 986.5 R.BL. 5'. REMOVED CORROSION IAW SRM 53-70-51-1A-1-A00108. PERFORMED UT THICKNESS INSP. IAW NDT PART 4; 51-00-00; PROCEDURE 3. MIN. THICKNESS 0.137'. FOUND TO BE OUT OF LIMITS IAW SRM=53-70-51-11A-1. REPAIR ACCOMPLISH ON TASK CARD TTG8Q00A436K.

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