Service difficulty report · Panel · Boeing 7377H4

Difficulty date
April 16, 2025
Submitted
April 23, 2025
Operation
Air carrier
Aircraft
N421LV
Make and model
Boeing 7377H4
Aircraft serial
32452
Aircraft time
76,349 hours, 45,370 cycles
Part
Panel
Condition
Worn
Location
Zone 500
Stage of operation
IN
How discovered
E
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

LEFT WING AFT UPPER TRAILING EDGE PANEL ATTACH POINT ON THE INBOARD UPPER PANEL ATTACH BEAM WAS WEAR (BEAM ON THE INBOARD SIDE OF DEFLECTION RIB). <[01] LEFT WING AFT UPPER TRAILING EDGE SUPPORT BEAN PANEL SEAL REQUIRE TO BE REMOVE TO FOM; [02] REMOVED SUPPORT BEAN PANEL SEAL TO FOM PER SRM 51-40-02.; [03] REMOVE UPPER SUPPORT BEAM TO FOM; [04] REMOVED UPPER SUPPORT BEAM PER SRM 51-40-02.; [05] REMOVED DAMAGE TO TRAILING EDGE UPPER SUPPORT BEAM PER SRM 57-51-02-2R-1 REPAIR 1 FIGURE 203; [06] REMOVED UPPER SUPPORT BEAM PER SRM 51-40-02. REMOVED DAMAGE TO TRAILING EDGE UPPER SUPPORT BEAM PER SRM 57-51-02-2R-1 REPAIR 1 FIGURE 203. RII INSPECTION C/W.; [07] C/W HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION PER 737 NDT PART 6; 51-00-00; PROCEDURE 23. NO DEFECTS NOTED.; [08] ADDED TOOLING.; [09] ACCOMPLISHED FLAP PEEN IAW SRM 51-20-06 AND SOPM 20-10-03.; [10] FLAP PEEN WAS INCORRECTLY DOCUMENTED ON THIS FAULT; SHOULD HAVE BEEN DOCUMENTED ON NRC TTG8Q00ZV5G3. NO FLAP PEEN ACCOMPLISHED OR REQUIRED ON THIS PART.; [11] INSPECTION CONFIRMS OK TO INSTALL UPPER SUPPORT BEAM.; [12] INSTALLED HI-LOK ON UPPER SUPPORT BEAM PER SRM 51-40-02; [13] RE-INSTALLED LEFT WING AFT UPPER TRAILING SHELF PANEL SEAL O/B SIDE IAW SOPM 20-50-01.; [14] RE-INSTALLED SHELF PANEL UPPER SUPPORT BEAM IAW SRM 57-51-02-2R-1; [15] REPAIRED SHELF PANEL UPPER SUPPORT BEAM IAW SRM 57-51-02-2R-1; [16] INSPECTION VERIFIED CORRECTIVE ACTION TAKEN IN STEPS 13; 14 & 15.

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