Service difficulty report · Rib · Boeing 737*

Difficulty date
January 4, 2022
Submitted
February 15, 2022
Operation
Air carrier
Aircraft
N423WN
Make and model
Boeing 737*
Aircraft serial
29827
Aircraft time
66,169 hours, 39,132 cycles
Part
Rib
Condition
Cracked
Location
L/H Horiz. 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 101.90 AT LEVEL FRONT SPAR LT HORIZONTAL STAB ; 2022-11920 / [01] TOOL USED EDDY CURRENT EQUIPMENT PN: NORTEC500D; SN: N500X12101V022235; DUE DATE: 03 JUN 22; [02] TOOL USED EDDY CURRENT FLAW DETECTOR PN NORTEC 600D SN 210136503; DUE DATE 05-MAR-22; [03] TOOLS USED: TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 142811020; DUE DATE: 21-JAN-22; TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 142811019; DUE DATE: 21-JAN-22.; [04] REPAIRED INSPAR RIB LOCATED INBOARD SIDE LOWER CHORD AT FRONT SPAR INSPAR RIB STAB STA 101.90 AT LT HORIZONTAL STAB. IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 AND 51-40-02.; [05] REPAIRED INSPAR RIB LOCATED INBOARD SIDE LOWER CHORD AT FRONT SPAR STAB STA 101.90 AT LT HORIZONTAL STAB. IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 AND 51-40-02. MATERIAL USED: ALUMINUM SHEET 7075-0.063 PO# 2021 158110; ALUMINUM SHEET 7075-T6-0.063 PO# 2021 194451.; [06] REPAIRED INSPAR RIB LOCATED INBOARD SIDE LOWER CHORD AT FRONT SPAR STAB STA 101.90 AT LT HORIZONTAL STAB. IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 AND 51-40-02. MATERIAL USED: ALUMINUM SHEET 7075-0.063 PO# 2021 158110; ALUMINUM SHEET 7075-T6-0.063 PO# 2021 194451. RII