Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 31, 2023
Submitted
July 5, 2023
Operation
Air carrier
Aircraft
N962WN
Make and model
Boeing 7377H4
Aircraft serial
36963
Aircraft time
38,452 hours, 23,554 cycles
Part
Support
Part number
UNKNOWN
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

FLOOR TO SIDE WALL SUPPORT HAS CORROSION AT BS 727A-727A+16; RBL 22; WL 156<[01] REMOVED CORROSION FROM AFT CARGO BAY FLOOR TO SIDE WALL SUPPORT ANGLE BS 727A-727A+16; RBL 22; WL 156; IN AREA OF 6' X 1' X 0.006' DEEP ORIGINAL MATERIAL THICKNESS 0.040' FOUND TO BE OUT OF LIMIT IAW SRM 53-00-53-1A-1 DET 4A(2A) FIG 103-D<BR>TOOLS USED MICROMETER ID:ATS1672; DUE:MAR-31-2024;[02] VERIFIED CORRECTIVE ACTION #1.;[03] REMOVED AFT CARGO BAY FLOOR TO SIDE WALL SUPPORT RBL 22 BS 727-BS767.;[04] FABRICATED LOCATED AND DRILLED NEW FLOOR TO SIDE WALL SUPPORT BS 727-767 RBL 22 WL 156 WITH NEXT MATERIAL BAC1496-377#7075T62 LOT 1526048-1 I.A.W SRM 51-40-05-0G-0 AND DWG 146A7502; MS 3-23; TYPE II CORROSION INHIBITING COMPOUND ON NEW FLOOR TO SIDE WALL SUPPORT BS 727-767 RBL 22 WL 156 I.A.W SRM 51-20-01. <BR>TIME APPLICATION :08-JUN-2023 04:38 UTC;[12] VERIFIED CORRECTIVE ACTION 11;[13] OK TO INSTALL FLOOR TO SIDEWALL SUPPORT;[14] OK TO INSTALL FLOOR SIDEWALL SUPPORT GIVEN;[15] INSTALLED FLOOR TO SIDEWALL SUPPORT BS 727 TO BS 767 RBL22 WL 156 IAW SRM 51-40-02 AND DWG 146A7500;[16] VERIFIED CORRECTIVE ACTION 15<BR>TASK COMPLETED

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