Service difficulty report · Skin · Boeing 7377H4

Difficulty date
March 21, 2022
Submitted
April 26, 2022
Operation
Air carrier
Aircraft
N470WN
Make and model
Boeing 7377H4
Aircraft serial
33860
Aircraft time
60,200 hours, 35,739 cycles
Part
Skin
Condition
Cracked
Location
L/H Horiz. Stab.
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 INDICATION FOUND ON LH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 16.500 INCH FROM FRONT SPAR; INBD SIDE OF RIB. CRACK LENGTH IS 1.000 INCH 2022-158170 / [01] TOOL USED CALIPER P/N 500-196-30 S/N A21029144 DUE DATE 07-OCT-22;[02] TOOL USED PN NORTEC 500D SN N500X1693P030456 DUE DATE 26-JAN-23;[03] TOOL USED: EDDY CURRENT FLAW DETECTOR P/N: NORTEC 600D; S/N:600091631; DUE DATE:03-DEC-22.;[04] PERFORMED REPAIR ON LOWER IN-SPAR SKIN OF LH HORIZONTAL STABILIZER AT STATION 193.90 RIB; 16.50 INCH FROM FRONT SPAR IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11;[05] CORRECTED STEP 1 PERFORMED REPAIR ON LOWER IN-SPAR SKIN OF LH HORIZONTAL STABILIZER AT STATION 193.90 RIB; 16.50 INCH FROM FRONT SPAR IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11 SEE INDIVIDUAL SIGN OFF BELOW;[06] TASK CARD COMPLETE AND CERTIFIED AS RII.<BR><BR><BR>SEE INDIVIDUAL SIGNOFFS BELOW.

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