Service difficulty report · Support Plate · Boeing 7378H4

Difficulty date
March 22, 2022
Submitted
April 20, 2022
Operation
Air carrier
Aircraft
N8628A
Make and model
Boeing 7378H4
Aircraft serial
42384
Aircraft time
27,196 hours, 12,448 cycles
Part
Support Plate
Part number
146A750252
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

AFT CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE HAS AREAS OF CORROSION BS 727E+12 TO BS767 RBL 21 WL156 / [01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 727F+10 RBL 21 WL 156; FOUND 0.015 REMOVED FROM ORIG 0.040 IN NUMEROUS 1'X1' AREAS; FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE ATS 1225[11] INSTALLED FABRICATED ACB R/H FLOOR TO SIDEWALL SUPPORT PLATE AND ALL REPAIR PARTS. BS727E+12 TO BS767; RBL21; WL156 PER SRM 53-00-53-2R-5 AND DWG 146A7500.;[12] VERIFIED CORRECTIVE ACTIONS 10 AND 11.;[13] VERIFIED WORK COMPLETED

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