Service difficulty report · Angle · Boeing 7378H4

Difficulty date
October 23, 2023
Submitted
November 28, 2023
Operation
Air carrier
Aircraft
N8553W
Make and model
Boeing 7378H4
Aircraft serial
63601
Aircraft time
19,705 hours, 9,889 cycles
Part
Angle
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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

SURFACE CORROSION ON L/H TRANSITION ANGLE LBL 21 STA. 727I - 727J (MARKED)<[01] REMOVED CORROSION ON LH TRANSITION ANGLE STA 727I-727J. REMAINING THICKNESS IS 0.030. FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2;[02] C/W INSP. REMOVED CORROSION ON LH TRANSITION ANGLE STA 727I-727J. REMAINING THICKNESS IS 0.030. FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2;[03] LOCATED AND DRILLED NEW L/H TRANSITION ANGLE FROM STA 727 +4 TO 787 PER SRM 51-40-05. TREATED AND PRIMED BARE METAL PER SRM 51-20-01;[04] VERIFIED3. NICHOLAS AYLOR (TECHNICIAN); 26-OCT-2023 07:56 UTC<BR>LOCATED AND DRILLED NEW L/H TRANSITION ANGLE FROM STA 727 +4 TO 787 PER SRM 51-40-05. TREATED AND PRIMED BARE METAL PER SRM 51-20-01 C/W AND OK TO INSTALL;[05] INSTALLED NEW AFT CARGO LH SIDE TRANSITION ANGLE IAW SRM 51-40-02.;[06] C/W INSP.

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