Service difficulty report · Plate · Boeing 7377H4

Difficulty date
June 26, 2024
Submitted
August 2, 2024
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
66,062 hours, 39,438 cycles
Part
Plate
Condition
Corroded
Location
Zone 100
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 AFT CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE HAS MULTIPLE AREAS AROUND NUT PLATE HOLES BS727B TO BS767 RBL22 WL156<[01] EVALUATED CORROSION ON R/H FLOOR TO SIDEWALL SUPPORT BS 727B TO BS767 RBL 22 WL 156; FOUND TO BE OUT OF LIMITS. REMOVED; FABRICATED; AND INSTALLED NEW FLOOR TO SIDEWALL SUPPORT PLATE AT BS 727 TO 767 RBL 22 WL 156 PER SRM 53-00-53-1A-2; SRM 51-10-02; SRM 51-40-02-0G-0; SRM 51-40-05-0G-0; SRM 53-60-53-0I-2 AND DWG 146A7500 REV: A.;[02] VERIFIED CORRECTIVE ACTION 1

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