Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date
November 29, 2021
Submitted
January 11, 2022
Operation
Air carrier
Aircraft
N8621A
Make and model
Boeing 7378H4
Aircraft serial
36917
Aircraft time
27,526 hours, 12,424 cycles
Part
Intercostal
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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 ON INTERCOSTAL FWD END BS 947.5 TO 967; LBL 51. ; / [01] CORROSION DAMAGE ON INTERCOSTAL FROM STA. 947.5 TO STA. 967; LBL 51' IS OUT OF LIMITS PER SRM 53-70-51-1A-1.; [02] VERIFIED CORROSION DAMAGE ON INTERCOSTAL FROM STA. 947.5 TO STA. 967; LBL 51' IS OUT OF LIMITS PER SRM 53-70-51-1A-1.; [03] REMOVED AND REPLACED INTERCOSTAL IN AFT WET AREA FROM STA. 947.5 TO STA. 967; LBL 51' PER SRM 51-40-02.; [04] VERIFIED INTERCOSTAL REPLACEMENT FROM STA. 947.5 TO STA. 967; LBL 51'; [05] REMOVED AND REPLACED INTERCOSTAL IN AFT WET AREA FROM STA. 947.5 TO STA. 967; LBL 51' PER SRM 51-40-02.

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