Service difficulty report · Angle · Boeing 7378H4

Difficulty date
July 26, 2024
Submitted
August 23, 2024
Operation
Air carrier
Aircraft
N8647A
Make and model
Boeing 7378H4
Aircraft serial
42528
Aircraft time
33,518 hours, 16,169 cycles
Part
Angle
Condition
Cracked
Location
Zone 100
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

INSIDE THE AIR CONDITIONING COMPARTMENT UNDER DOOR 192CR NEAR THE AFT INBD UPPER CORNER; THERE IS EVIDENCE OF A CRACK AT A FASTENER ON THE HORIZONTAL ANGLE.<[01] REMOVED STIFFENER PART # 111A1306-8 AND FILLER PART # 111A1601-11 FROM FRONT SIDE OF VAPOR BARRIER AT STA 663 PER SRM 51-40-02 TO F.O.M.;[06] LOCATED AND DRILLED HORIZONTAL ANGLE AT STA 663 IAW SRM 51-40-05;[07] IN REFERENCE TO CORRECTIVE ACTION #5; VERIFIED DAMAGE REMOVAL FROM HOLE. PERFORMED HFEC INSPECTION OF FASTENER HOLE IAW 737 NDT PART 6; 51-00-00 PROCEDURE 16. NO DEFECTS NOTED. REFERENCE TTG8Q00V2EPN FOR WORK ACCOMPLISHED.;[08] INSPECTED AS REQUIRED. CORRECTIVE ACTION #6. OK TO INSTALL NEW HORIZONTAL ANGLE.;[09] INSTALLED 33 EACH FASTENERS THROUGH STA 663 HORIZONTAL ANGLE INSIDE THE CENTER FUEL TANK IAW SRM 51-40-02;[10] C/W INSP. INSTALLED 33 EACH FASTENERS THROUGH STA 663 HORIZONTAL ANGLE INSIDE THE CENTER FUEL TANK IAW SRM 51-40-02;[11] GRANTED :L OK TO REINSTALL STIFFENER PART # 111A1306-8 AND FILLER PART # 111A1601-11 TO FRONT SIDE OF VAPOR BARRIER AT STA 663.;[12] RE INSTALLED HORIZONTAL STIFFENER AND FILLER AND VERTICAL STIFFENER AT L/H STA 663 HORIZONTAL ANGLE REPAIR PER SRM 51-40-02;[13] C/W INSPECTION OF C/A #12 ONLY;[14] COMPLETED REMOVAL AND REPLACEMENT OF R/H 663 CHORD IAW SRM 51-40-02.;[15] VERIFIED COMPLETED REMOVAL AND REPLACEMENT OF R/H 663 CHORD IAW SRM 51-40-02.

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