Service difficulty report · Angle · Boeing 7377H4

Difficulty date
April 4, 2023
Submitted
April 28, 2023
Operation
Air carrier
Aircraft
N412WN
Make and model
Boeing 7377H4
Aircraft serial
29818
Aircraft time
71,376 hours, 42,351 cycles
Part
Angle
Condition
Corroded
Location
Zn 200 Fus Top
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 ON ANGLE AT MID CABIN BS713 LBL63; LBL65 WL203.< REMOVED FOR ACCESS 2EA RIVET AT MID CABIN BS713 LBL63; LBL65 TO REMOVED CORROSION ON ANGLE SURFACE I.A.W SRM 51-40-02-0G-0;[03] REMOVED CORROSION ON ANGLE SURFACE AT MID CABIN BS713 LBL63 1'X1' AREA AND LBL65 1''X1'' AREA WL203 I.A.W SRM 51-10-02-0G-0;>LBL65: MINIMUM REMAINING MATERIAL THICKNESS FOUND 0.070' ADJACENT TO 0.071';[07] EQUIPMENT USED:<BR>-NORTEC 600 ID: ATS1465 CAL DUE: 09/2023<BR>-EPOCH 650 ID: ATS2342 CAL DUE: 07/2023;[08] EDITING DAMAGE DIMENSION MEASUREMENTS. REMOVED CORROSION ON ANGLE SURFACE AT MID CABIN BS713 LBL63 1'X 0.55' AREA AND LBL65 1''X 0.5'' AREA WL203 I.A.W SRM 51-10-02-0G-0.;[09] VERIFIED CORRECTIVE ACTION 8;[10] REFER TO FAULT TTG8Q00K8Y5T WHERE EA 23-153-01208 WAS ADDED AS A SUBTASK.;[11] VERIFIED CORRECTIVE ACTION 10;[12] EDITED MEASUREMENT TABLE FOR POTENTIAL CORROSION LEVEL.;[13] VERIFIED MEASUREMENT TABLE

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