Service difficulty report · Support · Boeing 7377H4

Difficulty date
November 29, 2021
Submitted
December 27, 2021
Operation
Air carrier
Aircraft
N455WN
Make and model
Boeing 7377H4
Aircraft serial
32462
Aircraft time
58,698 hours, 34,771 cycles
Part
Support
Condition
Corroded
Stage of operation
UK
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- LBL22 FLOOR TO SIDEWALL SUPPORT AT BS727D+3; +5; +6; +8; +10; +14 AND +16 ; CORROSION- LBL22 FLOOR TO SIDEWALL SPPORT AT BS727D+3; +5; +6; +8; +10; +14 AND +16 / [01] REMOVED CORROSION ON FLOOR TO SIDEWALL SUPPORT AT DISCREPANCY AREA FOUND TO BE OUT LIMITS L=1.000' W=0.0.550' D=0.017' ORIGINAL THCKNESS O.040' REMAINING MAT 0.023' IAW SRM53-00-53-1A-2 FIG 103 DETAIL C USED TOOL ID ATS 1672 DATE DUE 03/2021/03/2022; [02] VERIFIED CORRECTIVE ACTION 1; [03] LOCATED; DRILLED AND REPLACED ACB LH FLOOR TO SIDE WALL SUPPORT ANGLE ITEM# 146A7502-27 LOT#1475394-2 AT BS 727 TO BS 847 LBL 22 IAW SRM 51-40-05-0G-0 AND DWG#146A7500; [04] VERIFIED CORRECTIVE ACTION 3; [05] ACCOMPLISHED WITH CUSTOMER CARD #TTG8Q004E

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