Service difficulty report · Intercostal · Boeing 73776N

Difficulty date
November 14, 2023
Submitted
December 14, 2023
Operation
Air carrier
Aircraft
N7722B
Make and model
Boeing 73776N
Aircraft serial
32668
Aircraft time
55,418 hours, 28,473 cycles
Part
Intercostal
Part number
UNKNOWN
Condition
Cracked
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

MAIN CABIN FWD WET AREA CORROSION AT INTERCOSTAL UPPER SURFACE BETWEEN STA 294.5-312 LBL 12'<[01] REMOVED AND REPLACED NEW INTERCOSTAL AT MAIN CABIN WET AREA BETWEEN STA 294.5 TO STA 312 LBL-12 REF USED B737-700 SRM 51-40-02-0G-0 AND DWG#141A5600;[02] VERIFIED CORRECTIVE ACTION STEP 1;[03] VERIFIED CORRECTIVE ACTION STEP 1

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