Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
June 21, 2022
Submitted
July 28, 2022
Operation
Air carrier
Aircraft
N486WN
Make and model
Boeing 7377H4
Aircraft serial
33852
Aircraft time
59,624 hours, 35,506 cycles
Part
Sidewall Support
Part number
146A75022
Condition
Corroded
Location
Aft Cargo Bay
Stage of operation
IN
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 AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT AT RBL 21 BS 747+2; BS 747+6; BS 747+10; BS 747+14; BS 747+18. / [01] ALL STEPS COMPLETED 1 TO 5;[02] CORRECTED MEASUREMENT 19;[03] VERIFIED MEASUREMENT TABLE AND COMPLETED STEPS 1-5;[04] DUE TO OUT OF LIMIT STATEMENTS. PART TO BE REPLACE AT DISCREPANCY AREA FROM 727 TO 767 RBL 21 WL 154 ON FAULT TTG8Q00D4W02.;[05] VERIFIED THAT PART WAS REPLACED ON FAULT TTG8Q00D4W02.

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