Service difficulty report · Crease Beam · Boeing 7377H4

Difficulty date
March 4, 2021
Submitted
March 30, 2021
Operation
Air carrier
Aircraft
N746SW
Make and model
Boeing 7377H4
Aircraft serial
29798
Aircraft time
74,212 hours, 43,790 cycles
Part
Crease Beam
Condition
Corroded
Location
Bs 706-727
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

***CORROSION*** ON INBD CREASE BEAM CHORD AROUND FLOORPANEL HOLES AND INBD RADIUS BS 706-727 LBL64 WL 208 / CORROSION ON I/B CREASE BEAM CHORD; BS 706-727 LBL 64 WL 208 FOUND TO BE OUT OF LIMITS PER SRM 53-40-13-1A-1 REMOVED AND REPLACED I/B CREASE BEAM CHORD BS 670-727+3 PER SRM 51-40-02; SRM 51-40-05; MM 21-23-03; MM 20-60-07; MM 51-21-99 AND DWG# 144A5900 REV -

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