Service difficulty report · Crease Beam · Boeing 7377H4

Difficulty date
January 18, 2021
Submitted
February 15, 2021
Operation
Air carrier
Aircraft
N439WN
Make and model
Boeing 7377H4
Aircraft serial
29834
Aircraft time
59,583 hours, 35,303 cycles
Part
Crease Beam
Condition
Corroded
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

***CORROSION*** CORROSION ON INBD CHORD OF CREASE BEAM BS640 RBL 65 WL 208 / REMOVED CORROSION ON INBD CHORD OF CREASE BEAM STA 64D; RBL 65; WL 208. FOUND TO BE OUT OF LIMITS DUE TO NO APPLICABLE ALLOWABLE DAMAGE PER SRM 51-10-02-OG-0; PART TO BE REPLACED PER SRM 51-10-02-OG-0. FABRICATED REPLACEMENT INBD CHORD FROM BAC1515-531 7075 T6511; LOT #1240181. REMOVED DAMAGED INNER CHORD STA 626-672; RBL 65; WL 208; PER SRM 51-40-02-OG-0; NEW INNER CHORD WAS ANODIZED PER CUST P.O. #812584-SWA. PRIMED AND INSTALLED PER SRM 51-40-01-OG-0. AMM 51-21-72-370-804; SRM 51-40-05-06-07 DWG #144A5901; REV A

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