Service difficulty report · Support Plate · Boeing 7378H4

Difficulty date
February 17, 2022
Submitted
March 3, 2022
Operation
Air carrier
Aircraft
N8681M
Make and model
Boeing 7378H4
Aircraft serial
36904
Aircraft time
20,561 hours, 9,510 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

CORROSION AFT CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE BS727J +14 RBL25 WL156 / [01] EVALUATED CORROSION; BS 727J+14 RBL 25 WL 156; FOUND 0.015 REMOVED FROM ORIG 0.040 IN 1'X1' AREA FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING DIAL DEPTH GAUGE ATS 2473;[02] VERIFIED CORRECTIVE ACTION 1. OUT OF LIMITS;[03] REMOVED ACB FLOOR TO SIDEWALL SUPPORT DAMAGE SECTION AT BS 727H +11 - BS 767 ; RBL25; WL156 PER SRM 51-40-02-0G-0;[04] FABRICATED; LOCATED AND APPLIED CHEMICAL CONVERSION COATING TO ACB FLOOR TO SIDEWALL SUPPORT AT BS727H +11 - BS767 AND SPLICE REPAIR AT BS727H+6 - BS767+15 USING BAC1496-377#7075T62 LOT#1473823-1 PER SRM 51-40-05-0G AND DWG 146A7500; SRM 53-00-53-2R-5; AMM 51-21-41-370-802;[05] VALIDATED APPLICABILITY OF SRM 53-00-53-2R-5;[06] VERIFIED CORRECTIVE ACTIONS 4; 5. <BR><BR>OK TO PRIME REPAIR PARTS.;[07] OK TO INSTALL REPAIR PARTS;[08] APPLIED PRIMER TO REPAIR PARTS PER AMM 51-21-72-370-804;[09] VERIFIED CORRECTIVE ACTION ITEM 8.;[10] OK TO INSTALL FLOOR TO SIDEWALL SUPPORT FROM BS727H+11- BS767 RBL25.;[11] INSTALLED ACB R/H FLOOR TO SIDEWALL SUPPORT PLATE BS 727H+11 TO BS767 RBL25 WL156 IAW SRM 53-00-53-2R-5 AND DWG #146A7500.;[12] VERIFIED CORRECTIVE ACTION 11.;[13] WORKSCOPE COMPLETE

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