Service difficulty report · Web · Boeing 7377H4

Difficulty date
June 4, 2023
Submitted
July 3, 2023
Operation
Air carrier
Aircraft
N295WN
Make and model
Boeing 7377H4
Aircraft serial
32541
Aircraft time
51,370 hours, 30,880 cycles
Part
Web
Part number
UNKNOWN
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 WEB AT MID CABIN BS711 RBL64 WL203.<[01] REMOVED CORROSION ON MID CABIN WEB AT BS 711 RBL 64; WL 203; IN<BR> AN AREA OF 0.5'X0.8'IAW SRM 51-10-02-0G-0;[02] CORRECTED MEASUREMENT TABLE;[03] INSPECTED AND VERIFIED CORRECTIVE ACTION 1.;[04] COMPLETED STEPS 1; 2.;[05] EDITED MEASUREMENT 14.;[06] DUE TO INCORRECT MEASUREMENTS GIVEN DURING PRIOR INSPECTION.<BR>UT RE-INSPECTED BLENDED AREA IAW 737 NDTM PART 4 51-00-00 PROCEDURE 2.<BR>REMAINING MATERIAL THICKNESS IS 0.054' ADJACENT TO 0.056'. <BR>EQUIP USED: <BR>-NORTEC 600 ID: ATS1465 CAL DUE: 09/23<BR>-EPOCH 650 ID: ATS2342 CAL DUE: 07/23;[07] CORRECTION TO CORRECTIVE ACTION 6.<BR>EQUIPMENT NORTEC 600 ID: ATS1465 WAS NOT USED DURING INSPECTION.;[08] COMPLETED MEASUREMENT TABLE. WEB AT MID CABIN BS 711; RBL 64; WL 203 HAS NO ALLOWABLE DAMAGE ENTRY; THEREFORE; DAMAGE FOUND TO BE OUT OF LIMITS PER SRM 51-10-02-0G-0.;[09] REFER TO FAULT TTG8Q00LF7SW WHERE EA 23-153-01843 WAS ADDED AS A SUBTASK.;[10] VERIFIED ALL STEPS COMPLETE; MEASUREMENT TABLE AND CORRECTION ACTION ITEM 9.

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