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; LBL 50'. AREA MARKED.<[01] BLENDED CORROSION PER SRM 51-10-02. REMOVED .058' OF MATERIAL. REMAINING THICKNESS .092'. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-51-1A-1.;[02] VERIFIED BLENDED CORROSION PER SRM 51-10-02. REMOVED .058' OF MATERIAL. REMAINING THICKNESS .092'. DAMAGE REMOVAL IS OUT OF LIMITS PER SRM 53-70-51-1A-1.;[03] REMOVED AND REPLACED INTERCOSTAL FROM STA. 947 TO STA. 967; LBL 50' PER SRM 51-40-02.;[04] INSTALLED 4EA. ADHESIVELY BONDED NUTPLATES ON INTERCOSTAL FROM STA. 947 TO STA. 967; LBL 50' PER SRM 51-40-10-2R-0. PUSH TEST -GOOD.;[05] RAJESH ALI (TECHNICIAN); 17-AUG-2023 10:20 UTC<BR>INSTALLED 4EA. ADHESIVELY BONDED NUTPLATES ON INTERCOSTAL FROM STA. 947 TO STA. 967; LBL 50' PER SRM 51-40-10-2R-0. PUSH TEST -GOOD.

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