Service difficulty report · Rib · Boeing 7377H4

Difficulty date
March 27, 2022
Submitted
May 4, 2022
Operation
Air carrier
Aircraft
N427WN
Make and model
Boeing 7377H4
Aircraft serial
29831
Aircraft time
66,803 hours, 39,311 cycles
Part
Rib
Part number
5510000301
Condition
Cracked
Location
Lh 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 INSPAR RIB LOCATED STA STAB 120.30 AND 27 INCHES FROM FRONT SPAR LT HORIZONTAL STAB 2022-165143 / [01] TOOL USED: EDDY CURRENT EQUIPMENT P/N: NORTEC 600D; S/N: 60009161631; DUE DATE: 03-DEC-22;[02] TOOL USED: EDDY CURRENT EQUIPMENT; PN: NORTEC 500.D; SN: N500X12101V022233; DUE DATE: 02-JUN-22;[03] TOOL USED: EDDY CURRENT EQUIPMENT; PN: NORTEC 500D; SN: N500X12101V02233; DUE DATE: 02-JUN-22;[04] TOOL USED: EDDY CURRENT EQUIPMENT; PN:NORTEC 500D; SN: N500X12101V022233;DUE DATE: 02-JUN-22;[05] REPAIRED INSPAR RIB LOCATED STA STAB 120.30 AND 27 INCHES FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 THIS REPAIR IS CATEGORY A AND SEE SIGNOFF BELOW;[06] REPAIRED INSPAR RIB LOCATED STA STAB 120.30 AND 27 INCHES FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5. REPAIR PARTS MATERIAL USED:T-SECTION(1EA) KIT P/N 55100003-01 BATCH SW2022000214; ANGLE(1EA) P/N BAC1490-2738 P/O 2021 227850; SHIM(2EA) ALUMINUM SHEET P/N 7075T6-.025? P/O 2021 110047; FILLER(1EA) ALUMINUM SHEET P/N 7075T6 0.056? P/O 2013 539966. THIS REPAIR IS CATEGORY A AND SEE SIGNOFF BELOW;[07] REPAIRED INSPAR RIB LOCATED STA STAB 120.30 AND 27 INCHES FROM FRONT SPAR LT HORIZONTAL STAB IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5.

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