Service difficulty report · Stiffener · Boeing 73779P

Difficulty date
May 19, 2023
Submitted
June 20, 2023
Operation
Air carrier
Aircraft
N7820L
Make and model
Boeing 73779P
Aircraft serial
28253
Aircraft time
58,307 hours, 37,562 cycles
Part
Stiffener
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

CRACK STIFFENER FLOOR STRUCTURE LOCATED BS 540 BETWEEN RBL 45.5 TO RBL 60 CENTER SECTION 2023-330361<[01] REPLACED STIFFENER FLOOR STRUCTURE LOCATED BS 540 BETWEEN RBL 45.5 TO RBL 60 CENTER SECTION AND FASTENER IAW B737-700 SRM 51-10-02 ITEM 9 AND SRM 51-40-02. IAW DWG 143A540 SHEET 21 REV?. SEE INDIVIDUAL SIGNOFFS BELOW.;[02] REPLACED STIFFENER FLOOR STRUCTURE LOCATED BS 540 BETWEEN RBL 45.5 TO RBL 60 CENTER SECTION AND FASTENER IAW B737-700 SRM 51-10-02 ITEM 9 AND SRM 51-40-02. IAW DWG 143A540 SHEET 21 REV?. SEE INDIVIDUAL SIGNOFFS BELOW RII CERTIFIED

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