Service difficulty report · Rib · Boeing 7377H4

Difficulty date
December 15, 2021
Submitted
January 31, 2022
Operation
Air carrier
Aircraft
N944WN
Make and model
Boeing 7377H4
Aircraft serial
36659
Aircraft time
38,945 hours, 23,467 cycles
Part
Rib
Condition
Cracked
Location
Lh Hor Stab
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

CRACK INSPAR RIB LOCATED STAB STA 120.30 AT 19 INCH FROM FRONT SPAR LT HORIZONTAL STAB ; 2021-567111 / [01] PERFORMED HFEC INSPECTION OF THE CUT EDGE OF THE STIFFENER AND WEB AS PER NDT MANUAL D637239 PART 06 51-00-00 PROCEDURE 23 NO CRACKS FOUND. PERFORMED PERMANENT REPAIR ON INSPAR RIB LOCATED STAB STA 120.30 AT 19 INCH FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4 FIGURE 202 DETAIL A AND B737-700 SRM 51-40-02. PERFORMED PERMANENT REPAIR ON INSPAR RIB LOCATED STAB STA 120.30 AT 19 INCH FROM FRONT SPAR LT HORIZONTAL STAB IAW SRM 55-10-09-2R-4 REPAIR 4 FIGURE 202 DETAIL A AND B737-700 SRM 51-40-02.

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