Service difficulty report · Shear Web · Boeing 7378H4

Difficulty date
January 2, 2024
Submitted
January 29, 2024
Operation
Air carrier
Aircraft
N8677A
Make and model
Boeing 7378H4
Aircraft serial
36650
Aircraft time
27,106 hours, 13,052 cycles
Part
Shear Web
Part number
UNKNOWN
Condition
Corroded
Location
Bs 986
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

LIGHT CORROSION AT RT. GALLEY MOUNT FEET AT STA. 986 I/B AND O/B<[01] REMOVED CORROSION FROM R/H SHEAR WEB IAW SRM 51-10-02. DAMAGE REMOVAL OUT OF LIMITS IAW SRM 53-70-51-1A-1. CORROSION GOES COMPLETELY THROUGH .040 SHEAR WEB.;[02] PARTIALLY INSTALLED NEW WEB; (ALL FASTENERS LESS OUTBD ROW AND 3 OUTBD AFT FASTENERS PER SRM 41-40-02;[03] UPDATING CORRECTIVE ACTION 2. NICHOLAS AYLOR SRM REFERENCE TO; 'PARTIALLY INSTALLED NEW WEB; (ALL FASTENERS LESS OUTBD ROW AND 3 OUTBD AFT FASTENERS PER SRM 51-40-02'. SRM 41-40-02 WAS A TYPO.;[04] INSTALLED REMAINING FASTENERS IN NEW WEB P/N 147A5712U35 IAW SRM 51-40-02.;[05] VERIFIED CA#4 INSTALLED REMAINING FASTENERS IN NEW WEB P/N 147A5712U35 IAW SRM 51-40-02.;[06] SEE RAISED FAULT: CORRECTIVE ACTION #2 NEEDS INSP BUYBACK. CORRECTIVE ACTION #3 NEEDS CORRECTION TO BE DONE PER MPM AND INCLUDE MPM REFERENCE IN SIGN OFF. STEPS 1;2;3 NEED PARTIAL WORK TO BE DOCUMENTED BY AMT

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