Service difficulty report · Rib · Boeing 7377H4

Difficulty date
June 8, 2021
Submitted
July 26, 2021
Operation
Air carrier
Aircraft
N441WN
Make and model
Boeing 7377H4
Aircraft serial
29837
Aircraft time
60,855 hours, 35,873 cycles
Part
Rib
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 INSPAR RIB 129.50 AT 24 INCHES FROM FRONT SPAR AT RT HORIZONTAL STABILIZER ; 2021-269627 / [01] TOOL USED: CALIPER P/N 500-464; S/N 15045614; DUE DATE 22-JAN-22.; [02] TOOLS USED: CALIPER P/N 500-464; S/N 15045614; DUE DATE 22-JAN-22; RADIUS GAUGE P/N 2204A3; S/N AE-408651; DUE DATE 02-FEB-22.; [03] TOOL USED P/N NORTEC600D; S/N 2000053402;DUE DATE: 23- APR-22; [04] TOOL USED P/N NORTEC600D; S/N 2000053402;DUE DATE: 23- APR-22; [05] TOOLS USED: CALIPER P/N 500-464; S/N 15045614; DUE DATE 22-JAN-22; RADIUS GAUGE P/N 2204A3; S/N AE-408651; DUE DATE 02-FEB-22.; [06] PERFORMED PERMANENT REPAIR ON INSPAR RIB 129.50 AT 24 INCHES FROM FRONT SPAR AT RT HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4 FIGURE 202. MATERIAL USED: KIT T-SECTION P/N 55100003-01; P.O. 2021 161712.; [07] PERFORMED PERMANENT REPAIR ON INSPAR RIB 129.50 AT 24 INCHES FROM FRONT SPAR AT RT HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4 FIGURE 202. MATERIAL USED: KIT T-SECTION P/N 55100003-01; P.O. 2021 161712. RII ITEM.

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