Service difficulty report · Support · Boeing 7377H4

Difficulty date
June 17, 2021
Submitted
July 14, 2021
Operation
Air carrier
Aircraft
N226WN
Make and model
Boeing 7377H4
Aircraft serial
32494
Aircraft time
53,110 hours, 31,655 cycles
Part
Support
Condition
Corroded
Location
Bs 727c-767
Stage of operation
IN
How discovered
V
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 FLOOR TO SIDEWALL SUPPORT AT BS 727C+9-767 RBL 22 WL 156 ; / [01] REMOVED CORROSION FROM ACB FLOOR TO SIDE WALL SUPPORT ANGLE BS 727C+9 TO BS 767 RBL 22 WL 156 IN AREA OF 2' X 2' X 0.015' DEEP FOUND TO BE OUT OFF LIMIT IAW 53-00-53-1A-1 DETAIL 4A(2)A FIG.103-D<BR>TOOLS USED MICR0METER ID ATS1671; S/N 65093024; [02] ORIGINAL MATERIAL THICKNESS 0.040'; [03] VERIFIED REMOVAL OF CORROSION FROM ACB FLOOR TO SIDE WALL SUPPORT ANGLE BS 727C+9 TO BS 767 RBL 22 WL 156 IN AREA OF 2' X 2' X 0.015' DEEP FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-1 DETAIL 4A(2)A FIG.103-D<BR>TOOLS USED MICR0METER ID ATS1671; S/N 65093024; [04] FABRICATED; LOCATED AND DRILLED ACB FLOOR TO SIDEWALL SUPPORT ANGLE MADE FROM BAC1496-377#7075T62 LOT#1459405-1 AT BS 727 TO BS 767 RBL 22 WL 156 IAW SRM 51-40-05-0G-0 AND DWG# 146A7502

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