Service difficulty report · Support · Boeing 7377H4

Difficulty date
February 9, 2023
Submitted
March 13, 2023
Operation
Air carrier
Aircraft
N289CT
Make and model
Boeing 7377H4
Aircraft serial
36633
Aircraft time
50,940 hours, 30,659 cycles
Part
Support
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 RIGHT OWE THRESHOLD SUPPORT RBL 71 WL 221<[01] CORROSION ON RIGHT OVER WING EXIT THRESHOLD SUPPORT FOUND TO BE OUT OF LIMITS DUE TO NO ALLOWABLE LIMITS FOUND IN THE SRM FOR THIS ITEM AND IT IS REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR 9 C;[02] REMOVED RIGHT OWE THRESHOLD SUPPORT RBL 71 WL 221 IAW SRM 51-40-02;[03] VERIFIED CORRECTIVE ACTION 1 AND 2.;[04] LOCATED AND DRILLED NEW R/H OVER WING THRESHOLD SUPPORT RBL 71 WL 221 IAW SRM 51-40-05 AND DWG # 411A2854 OK TO INSTALL;[05] VERIFIED ORRECTIVE ACTION 4 AND THE MEASUREMENT TABLE. OK TO INSTALL THRESHOLD SUPPORT.;[06] INSTALLED RIGHT OWE THRESHOLD SUPPORT RBL 71 WL 221 IAW SRM 51-40-02 AND DWG # 144A8201;[07] VERIFIED CORRECTIVE ACTION 6. WORKSCOPE IS COMPLETE.

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