Service difficulty report · Support · Boeing 7378H4

Difficulty date
December 11, 2023
Submitted
January 10, 2024
Operation
Air carrier
Aircraft
N8557Q
Make and model
Boeing 7378H4
Aircraft serial
63582
Aircraft time
20,011 hours, 10,087 cycles
Part
Support
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

CORROSION AFT CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE HAS MULTIPLE AREAS AROUND NUT PLATE HOLES BS727E+21' TO BS767 RBL22 WL156<[01] CORROSION ON AFT CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE SECTION FOUND TO BE OUT OF LIMITS. REMOVED; REPLACED AND INSTALLED NEW FLOOR TO SIDEWALL SUPPORT SECTION FROM BS 727E+12' TO 767 AND SPLICE AT BS 727E+12' PER SRM 53-00-53-1A-2; SRM 53-00-53-2R-5; SRM 51-40-02-0G-0; AND DWG 146A7500.;[02] VERIFIED.

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