Service difficulty report · Rib · Boeing 7377BD

Difficulty date
July 7, 2023
Submitted
July 28, 2023
Operation
Air carrier
Aircraft
N7721E
Make and model
Boeing 7377BD
Aircraft serial
34479
Aircraft time
56,723 hours, 30,056 cycles
Part
Rib
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 INSPAR RIB LOWER FLANGE AFT SIDE AT RT HORIZONTAL STABILIZER 2023-405226<[01] TOOL USED: EDDY CURRENT FLAW DETECTOR; P/N: NORTEC 600D; S/N: 220273012; DUE DATE: 17-DEC-23;[02] TOOLS USED: TEMPERATURE CONTROLLER: P/N: P3015GOES00000; S/N: 142811020; DUE DATE: 25-JAN-24; TEMPERATURE CONTROLLER: P/N: 38615K71; S/N: AE-40586; DUE DATE: 09-AUG-23.;[03] RADIOMETER PHOTOMETER P/N: XRP-3000; S/N: 1998072; DUE DATE: 15-OCT-23.;[04] PERFORMED PERMANENT REPAIR ON ON INSPAR RID 92.70 LOWER FLANGE EDGE AFTER SIDE IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 FIGURE205 SHEET 1.SEE INDIVIDUAL STEP SIGNOFF BELOW;[05] CORRECT STEP 4.<BR>PERFORMED PERMANENT REPAIR ON ON INSPAR RIB 92.70 LOWER FLANGE EDGE AFTER SIDE IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 FIGURE205 SHEET 1.SEE INDIVIDUAL STEP SIGNOFF BELOW;[06] CORRECTED STEP 5 :<BR>PERFORMED PERMANENT REPAIR ON ON INSPAR RIB 92.70 LOWER FLANGE EDGE AFTER SIDE IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 FIGURE205 SHEET 1.SEE INDIVIDUAL STEP SIGNOFF BELOW;[07] CERTIFIED STEP 6 COMPLETED <BR>PERFORMED PERMANENT REPAIR ON ON INSPAR RIB 92.70 LOWER FLANGE EDGE AFT SIDE IAW B737-700 SRM 55-10-09-2R-5 REPAIR 5 FIGURE205 SHEET 1.<BR>RII

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