Service difficulty report · Rib · Boeing 7377H4

Difficulty date
June 21, 2021
Submitted
August 2, 2021
Operation
Air carrier
Aircraft
N419WN
Make and model
Boeing 7377H4
Aircraft serial
29824
Aircraft time
64,912 hours, 38,308 cycles
Part
Rib
Condition
Cracked
Location
Horizontal Stab
Stage of operation
IN
How discovered
V
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 INDICATION FOUND ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB ; 16.5 INCHES FROM FRONT SPAR INBOARD SIDE OF RIB . CRACK LENGTH 0.900 INCHES ; 2021-295266 / [01] TOOL USED PN: NORTEC 500D; SN: N500X1693P030456; DUE DATE: 30 NOV 21.; [02] TOOL USED: P/N: 45MG; S/N: 130060401; DUE DATE: 22-APR-22.; [03] PERFORMED REPAIR ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB ; 16.5 INCHES FROM FRONT SPAR INBOARD SIDE OF RIB I.A.W B737-700 SRM 51-40-02 AND SRM 55-10-01-2R-11 REPAIR 11. MEASURE OF CRACK CRACK LENGTH 0.900 INCHES TOOL USED: CALIPER P/N: 700-113-10 S/N: 0019306 DUE DATE 14-OCT-2021.; [04] PERFORMED REPAIR ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB ; 16.5 INCHES FROM FRONT SPAR INBOARD SIDE OF RIB I.A.W B737-700 SRM 51-40-02 AND SRM 55-10-01-2R-11 REPAIR 11; COMPLETED RII INSPECTION

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