Service difficulty report · None · Boeing 737*

Difficulty date
February 4, 2022
Submitted
March 3, 2022
Operation
Air carrier
Aircraft
N469WN
Make and model
Boeing 737*
Aircraft serial
33859
Aircraft time
59,572 hours, 35,384 cycles
Part
None
Condition
Corroded
Location
Aft Fuselage
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 ON 986 FLOORBEAM UPPER CHORD AT LBL 44 AND AT RBL 44; WL 208. / [01] VERIFY APPLICABILITY PER SRM 53-70-51-1A-1; NSTALLED L/H BS986 RBL1-LBL55 T-CHORD REPAIR I.A.W SRM 53-70-51-2R-4 REPAIR 4 ALTERNATIVE 2 PAR.4.N-O.;INSTALLED R/H BS986 RBL22-RBL55 T-CHORD REPAIR I.A.W SRM 53-70-51-2R-4 REPAIR 4 ALTERNATIVE 2 PAR.4.N-O.; INSTALLED REPAIR ON L/H FLANGE RBL1-LBL55 AND R/H FLANGE RBL22-RBL55 OF THE UPPER CHORD BS986 WL208 I.A.W 53-70-51-2R-4 REPAIR 4 ALTERNATIVE 2 PAR 1- 4.S