Service difficulty report · Skin · Boeing 7377H4

Difficulty date
April 21, 2022
Submitted
May 31, 2022
Operation
Air carrier
Aircraft
N473WN
Make and model
Boeing 7377H4
Aircraft serial
33832
Aircraft time
60,134 hours, 35,574 cycles
Part
Skin
Condition
Cracked
Location
Rh Hor 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 INDICATIONS FOUND ON RH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 10.0 INCH FROM REAR SPAR; INBD SIDE OF RIB. CRACK LENGTH IS 1.200 INCH 2022-206920 REPAIRED RH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 10.0 INCH FROM REAR SPAR; INBD SIDE OF RIB IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11 FIGURE 204 SHEET 2 DETAIL:B AND SRM 51-40-02.THIS REPAIR IS CATEGORY B. CRACK LENGTH IS 1.200 INCH. [03] REPAIRED RH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90 RIB; 10.0 INCH FROM REAR SPAR; INBD SIDE OF RIB IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11 FIGURE 204 SHEET 2 DETAIL:B AND SRM 51-40-02.THIS REPAIR IS CATEGORY B. CRACK LENGTH IS 1.200 INCH.

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