Service difficulty report · Rib · Boeing 7377H4

Difficulty date
November 3, 2023
Submitted
November 7, 2023
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
64,049 hours, 38,175 cycles
Part
Rib
Part number
UNKNOWN
Condition
Broken
Location
Zn 600 Right Win
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

R/H WING DEFLECTION RIB IN BETWEEN I/B AND O/B FLAPS HAS A BROKEN UPPER SHELF PANEL SUPPORT FLANGE.<[01] REMOVED DAMAGED UPPER TAB FROM R/H DEFLECTOR CONTROL RIB PER SRM 57-51-02-2R-3 REPAIR 3.;[02] C/W HFEC IAW B737 NDT 51-00-00 PART 6 PROC 23 NO DEFECTS NOTED;[03] FLAP PEENED THE REWORKED AREA ON R/H DEFLECTOR RIB PER SRM 57-51-02-2R-3 PAR 4.H;[04] INSPECTED WORK ABOVE;[05] LOCATED AND DRILLED UPPER TAB PER SRM 57-51-02?2R-3 REPAIR 3; OK TO INSTALL;[06] ALODINED AND PRIMED REWORKED UPPER TAB AREA AS REQUIRED PER SRM 57-51-02-2R-3;[07] OK TO INSTALL UPPER TAB.;[08] INSTALLED UPPER TAB ON DEFLECTION RIB PER SRM 57-51-02-2R-3 REPAIR 3;[09] C/W INSPECTION <BR>8. INSTALLED UPPER TAB ON DEFLECTION RIB PER SRM 57-51-02-2R-3 REPAIR 3;[10] REPAIRED R/H WING DEFLECTION RIB UPPER TAB PER SRM 57-51-02-2R-3. SEE ALL C/A?S AND STEPS FOR INDIVIDUAL SIGN OFFS;[11] INSPECTED WORK ACCOMPLISHED IN C/A #10. NICHOLAS AYLOR (TECHNICIAN); 05-NOV-2023 00:43 UTC <BR>REPAIRED R/H WING DEFLECTION RIB UPPER TAB PER SRM 57-51-02-2R-3.;[12] C/W INSPECTION REQUIREMENTS.

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