Service difficulty report · Plate · Boeing 7378H4

Difficulty date
January 9, 2023
Submitted
February 2, 2023
Operation
Air carrier
Aircraft
N8519R
Make and model
Boeing 7378H4
Aircraft serial
36910
Aircraft time
20,262 hours, 9,764 cycles
Part
Plate
Part number
NOTENTERED
Part serial
NOTENTERED
Condition
Corroded
Location
Zn 100 Fus Lower
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 FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE MULTIPLE AREAS AROUND NUT PLATE HOLES BS500A TO BSBS500I RBL24.5 WL156<[01] UPDATED MEASUREMENT TABLE FOR PICTURE OF CORROSION ATTACHED STEP 20;[02] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 500D+10 RBL 24.5 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 2473 DUE 2023;[03] VERIFIED CORRECTIVE ACTION 2 AND MEASUREMENT TABLE;[04] REMOVED DAMAGED FCB R/H FLOOR TO SIDEWALL SUPPORT BS500A TO BS500I; RBL24.5; WL156 PER SRM 51-40-02-0G-0.;[05] LOCATED AND DRILLED NEW FCB R/H FLOOR TO SIDEWALL SUPPORT PLATE BS500A TO BS500I; RBL24.5; WL156 PER SRM 51-40-05-0G-0 AND DWG 143A7500.;[06] OK TO INSTALL NEW FCB R/H FLOOR TO SIDEWALL SUPPORT PLATE BS500A TO BS500I; RBL24.5; WL156.;[07] VERIFIED CORRECTIVE ACTIONS STEP 4;5;6 OK TO INSTALL GIVEN .;[08] INSTALLED NEW FCB R/H FLOOR TO SIDEWALL SUPPORT PLATE BS500A TO BS500I; RBL24.5; WL156 PER SRM51-40-02-0G-0 AND DWG 143A7500.;[09] VERIFIED CORRECTIVE ACTION 8.;[10] VERIFIED MEASUREMENT TABLE. WORKSCOPE COMPLETE.

More about the Boeing 737-8H4