Service difficulty report · Angle · Boeing 7378H4

Difficulty date
May 26, 2024
Submitted
July 1, 2024
Operation
Air carrier
Aircraft
N8574Z
Make and model
Boeing 7378H4
Aircraft serial
63588
Aircraft time
19,849 hours, 10,149 cycles
Part
Angle
Part number
UNKNOWN
Condition
Corroded
Location
Bs 727j-747
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

AFT CARGO COMPARTMENT RH TRANSITION ANGLE BETWEEN STA.727J-747; RBL 21-RBL 22 HAS SURFACE CORROSION.(MARKED<REMOVED CORROSION PER SRM 53-00-53-1A-2 (0.037' REMAINING THICKNESS). TRANSITION ANGLE (SIDEPLATE) IS OUT OF LIMITS PER SRM 53-00-53-1A-2.;[02] CUT AND REMOVED TRANSITION ANGLE DAMAGE SECTION FROM STA. 727H+10 TO STA. 767 IAW SRM 53-00-53-2R-5 REPAIR 5.; FABRICATED; DRILLED AND COUNTERSINK NEW TRANSITION ANGLE FROM STA. 727H+10 TO STA. 767 AND REPAIR SPLICE IAW SRM 53-00-53-2R-5 REPAIR 5.;[04] C/W INSPECTION OF C/A #3 ONLY;[05] ALDINE AND PRIMED NEW TRANSITION ANGLE AND REPAIR SPLICE IAW SRM 53-00-53-2R-5 REPAIR 5 INSTALLED NUTPLATES TO NEW TRANSITION ANGLE IAW SRM 51-40-10-2R-0. 02-JUN-2024 03:07 UTC INSTALLED NUT PLATES TO NEW TRANSITION ANGLE IAW SRM 51-40-10-2R-0. DATE/ TIME INSTALL 6/1/2025 10:30PM.INSTALLED NEW TRANSITION ANGLE FROM STA. 727J TO STA. 767 IAW SRM 53-00-53-2R-5.;[11] PERFORMED PUSH TEST ON NUTPLATES ON NEW TRANSITION ANGLES IAW SRM 51-40-10-2R-0. NO FAIL NUTPLATES.;[12] RII: INSPECTED WORK ACCOMPLISHED IN C/A'S <BR>#10. VISAY HEUANGVILAY (TECHNICIAN); 02-JUN-2024 23:57 UTC INSTALLED NEW TRANSITION ANGLE FROM STA. 727J TO STA. 767 IAW SRM 53-00-53-2R-5. REPAIRED RH TRANSITION ANGLE FROM STA. 727J+10 TO STA. 767 RBL 21-RBL22 IAW SRM 53-00-53-2R-5 REPAIR 5. REPAIRED RH TRANSITION ANGLE FROM STA. 727J+10 TO STA. 767 RBL 21-RBL22 IAW SRM 53-00-53-2R-5 REPAIR 5.;[15] C/W INSPECTON SEE INDIVIDUAL SIGN OFFS

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