Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
August 9, 2023
Submitted
September 7, 2023
Operation
Air carrier
Aircraft
N8547V
Make and model
Boeing 7378H4
Aircraft serial
63572
Aircraft time
19,953 hours, 9,831 cycles
Part
Intercostal
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
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

PASSENGER CABIN FLOOR INTERCOSTAL CORRODED NEAR LAV MOUNT FITTING AT STA.947+2; RBL 50'. REFERENCE TTG8Q00MPV7P FOR ORIGINAL DISCREPANCY.<[01] BLENDED CORROSION PER SRM 51-10-02. REMOVED .040 OF MATERIAL. REMAINING THICKNES IS .110'. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-51-1A-1;[02] VERIFIED BLENDED CORROSION PER SRM 51-10-02. REMOVED .040 OF MATERIAL. REMAINING THICKNES IS .110'. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-51-1A-1;[03] INSTALLED REPLACEMENT INTERCOSTAL PER SRM 51-40-02. INSTALLED 4 EA CLICK-BOND ADHESIVE NUT PLATES TO REPLACEMENT INTERCOSTAL ON 8/18/23 @ 1330 PER SRM 51-40-10.;[04] INSPECTED THE WORK PERFORMED ON C/A #3; NO DEFECTS NOTED.

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