Service difficulty report · Stringer Clip · Boeing 7377H4

Difficulty date
May 12, 2023
Submitted
June 20, 2023
Operation
Air carrier
Aircraft
N429WN
Make and model
Boeing 7377H4
Aircraft serial
33658
Aircraft time
66,602 hours, 39,316 cycles
Part
Stringer Clip
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

CORROSION ON CLIP AT ACB BS727D+10 LBL7 WL152.<[01] EVALUATED CORROSION DAMAGE ON CLIP AT ACB BS 727D+10; LBL7 WL 152 FOUND TO BE OUT OF LIMITS DUE NOT LIMITS IN SRM PARTS WILL BE REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0;[02] REMOVED CLIP AT ACB BS 727D+10; LBL7 WL 152 IAW SRM 51-40-02-0G-0;[03] FABRICATED A CLIP AT ACB BS727D LBL7 WL152 FROM BAC1493-672#7075T62 LOT#1472647-1. TREATED IAW SRM 51-40-05 AND IAW DWG#146A7734. OK TO PRIME;[04] VERIFIED CORRECTIVE ACTION ITEMS 1; 2; 3.<BR>OKAY TO PRIME NEW CLIP GIVEN.;[05] APPLIED TWO LAYERS OF BMS 10-11; TYPE I PRIMER TO THE SURFACE OF NEW CLIP AT ACB BS727D LBL7 WL152 REFER TO SOPM 20-41-02.;[06] OK TO INSTALL;[07] VERIFIED CORRECTIVE ACTION 5 AND 6 OK TO INSTALL;[08] INSTALLED CLIP AT ACB BS727D+10 LBL7 IAW SRM 51-40-02 AND IAW DWG#146A7730;[09] VERIFIED MEASUREMENT TABLE;[10] VERIFIED CORRECTIVE ACTION 8

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