Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
July 5, 2023
Submitted
August 4, 2023
Operation
Air carrier
Aircraft
N913WN
Make and model
Boeing 7377H4
Aircraft serial
29840
Aircraft time
49,236 hours, 29,953 cycles
Part
Stiffener
Part number
UNKNOWN
Condition
Cracked
Location
Zn 300 Stabilize
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 STIFFENER 2 INSPAR RIB 129.50 AT LT HORIZONTAL STABILIZER 2023-431111<[01] TOOL USED: EDDY CURRENT EQUIPMENT; P/N: NORTEC600D; S/N: 210138103; CAL DUE DATE: 02-MAY-24;[02] TOOL USED: EDDY CURRENT EQUIPMENT; P/N: NORTEC 500D; S/N: N500X1693P030456; DUE DATE: 12 MAR 24.;[03] TOOL USED: EDDY CURRENT FLAW DETECTOR; P/N: NORTEC 600D; S/N: 220273012; DUE DATE: 17-DEC-23;[04] TOOL USED: ULTRASONIC THICKNESS GAGE; P/N: 45MG; S/N:130066701; CAL DUE DATE: 09-JUN-24;[05] PERFORMED PERMANENT REPAIR LOCATED ON STIFFENER 2 INSPAR RIB 129.50 AT LT HORIZONTAL STABILIZER I.A.W B737-700 SRM 55-10-09-2R-5 REPAIR 5 AND DWG 182A3001 REV F. SEE INDIVIDUAL SIGN-OFF BELOW.;[06] PERFORMED PERMANENT REPAIR LOCATED ON STIFFENER 2 INSPAR RIB 129.50 AT LT HORIZONTAL STABILIZER I.A.W B737-700 SRM 55-10-09-2R-5 REPAIR 5 AND DWG 182A3001 REV F. RII; SEE INDIVIDUAL SIGN-OFF BELOW.

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