Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
February 19, 2023
Submitted
March 20, 2023
Operation
Air carrier
Aircraft
N278WN
Make and model
Boeing 7377H4
Aircraft serial
36441
Aircraft time
52,434 hours, 31,459 cycles
Part
Intercostal
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 WEB - INTERCOSTAL BTW BS 747 TO BS 767 AT LEVEL S 25R AND RBL 21 AT AFT CARGO COMPARTMENT 2023-127670<[01] REPLACED WEB - INTERCOSTAL BTW BS 747 TO BS 767 AT LEVEL S 25R AND RBL 21 AT AFT CARGO COMPARTMENT IAW B737-700 SRM 51-40-02 AND DWG 146A7500; SHEET 88 AND REV: A. SEE INDIVIDUAL SIGN OFF BELOW.;[02] CERTIFIED RII WORK PERFORMED. <BR>SEE INDIVIDUAL SIGNOFFS BELOW.

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