Service difficulty report · Skin · Boeing 7377H4

Difficulty date
July 26, 2021
Submitted
September 14, 2021
Operation
Air carrier
Aircraft
N446WN
Make and model
Boeing 7377H4
Aircraft serial
29842
Aircraft time
58,476 hours, 34,391 cycles
Part
Skin
Condition
Cracked
Location
Horizontal 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 ON RH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90; INBOARD SIDE OF RIB ; 16.750 INCH FROM FRONT SPAR. CRACK LENGTH IS 0.500 INCH. ; 2021-341980 / [01] REPAIRED EXTERNAL LOWER IN-SPAR SKIN AT STATION 193.30 INBOARD SIDE OF RIB 16.750 INCH FROM FRONT SPAR AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. MATERIAL USED ALUMINUM SHEET 2024T3 0.063 INCH 2020202354 AND ALUMINUM SHEET 2024T3 0.080 INCH PO 2021138258; [02] REPAIRED EXTERNAL LOWER IN-SPAR SKIN AT STATION 193.30 INBOARD SIDE OF RIB 16.750 INCH FROM FRONT SPAR AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. MATERIAL USED ALUMINUM SHEET 2024T3 0.063 INCH PO 2020202354 AND ALUMINUM SHEET 2024T3 0.080 INCH PO 2021138258; [03] REPAIRED EXTERNAL LOWER IN-SPAR SKIN AT STATION 193.30 INBOARD SIDE OF RIB 16.750 INCH FROM FRONT SPAR AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. MATERIAL USED ALUMINUM SHEET 2024T3 0.063 INCH PO 2020202354 AND ALUMINUM SHEET 2024T3 0.080 INCH PO 2021138258<BR>RII ACCOMPLISHED

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