Service difficulty report · Strap · Boeing 7377H4

Difficulty date
June 7, 2023
Submitted
July 12, 2023
Operation
Air carrier
Aircraft
N963WN
Make and model
Boeing 7377H4
Aircraft serial
36676
Aircraft time
38,123 hours, 23,431 cycles
Part
Strap
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

AFT PASSENGER FLOOR STRUCTURE TENSION STRAP HAS CORROSION AT BS 1016; LBL 3; WL 208<[01] CORROSION ON TENSION STRAP AT BS1016 LBL3 WL 208 FOUND TO BE OUT OF LIMITS DUE TO NO SRM ALLOWABLE DAMAGE. THE STRUCTURAL ITEMS THAT DO NOT HAVE ENTRIES ARE CALLED REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02 PAR 9C;[02] REMOVED TENSION STRAP FROM BS1006-BS1029 LBL3 IAW SRM 51-40-02;[03] VERIFIED CORRECTIVE ACTION 1 AND 2;[04] LOCATED AND DRILLED NEW TENSION STRAP AT LBL3 FROM BS1006-BS1029; PN#147A5620-3 IAW SRM 51-40-02 AND IAW DWG#147A5600. OK TO INSTALL;[05] CORRECTIVE REFERENCE: LOCATED AND DRILLED NEW TENSION STRAP AT LBL3 FROM BS1006-BS1029; PN#147A5620-3 IAW SRM 51-40-05 AND IAW DWG#147A5600. OK TO INSTALL;[06] VERIFIED CORRECTIVE ACTION 4 AND 5;[07] INSTALLED TENSION STRAP AT LBL3 FROM BS1006-BS1029; PN#147A5620-3 IAW SRM 51-40-02 AND IAW DWG#147A5600.;[08] VERIFIED MEASUREMENT TABLE;[09] VERIFIED CORRECTIVE ACTION 7

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