Service difficulty report · Rib · Boeing 7378H4

Difficulty date
August 3, 2024
Submitted
August 29, 2024
Operation
Air carrier
Aircraft
N8646B
Make and model
Boeing 7378H4
Aircraft serial
36935
Aircraft time
33,915 hours, 16,273 cycles
Part
Rib
Condition
Cracked
Location
Zone 500
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

ON THE LEFT WING OTBD FIXED TRAILING EDGE PANEL; THE OTBD ATTACH BRACKET AT THE DEFLECTION RIB IS CRACKED ALL THE WAY THROUGH.<[01] TRIMMED OUT DAMAGED UPPER TAB COMPLETELY FROM THE DEFLECTION CONTROL RIB IAW SRM 57-51-02-2R-3;[02] C/W HFEC INSP OF TRIMMED OUT AREA. NO DAMAGE NOTED. PER NDT PART 6 51-00-00 PROCEDURE 23.;[03] FLAP PEENED TRIMMED OUT AREA; UPPER SIDE OF L/H DEFLECTION CONTROL RIB IAW SRM 57-51-02-2R-3.;[04] VERIFIED FLAP PEENED TRIMMED OUT AREA; UPPER SIDE OF L/H DEFLECTION CONTROL RIB IAW SRM 57-51-02-2R-3.;[05] LOCATED AND DRILLED REPAIR PARTS IAW SRM 57-51-02-2R-3.;[06] OK TO INSTALL REPAIR PARTS.;[07] VERIFIED LOCATION AND FAB OF REPAIR PARTS PER SRM 57-51-02-2R-3.;[08] OK TO INSTALL REPAIR PARTS ON DEFLECTION CONTROL RIB.;[09] INSTALLED REPAIR PARTS PER SRM 57-51-02?2R-3.;[10] INSPECTED INSTALLATION OF REPAIR PARTS PER SRM 57-51-02?2R-3.

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