Service difficulty report · Beam · Boeing 7377BD

Difficulty date
February 4, 2023
Submitted
March 3, 2023
Operation
Air carrier
Aircraft
N7746C
Make and model
Boeing 7377BD
Aircraft serial
33934
Aircraft time
50,644 hours, 26,573 cycles
Part
Beam
Condition
Cracked
Location
Zn 200 Fus Top
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 ON UPPER CHORD OF FLOOR BEAM BST 294.5 APPROX. RBL 59 AND WL 208.1 2023-99259<[01] TOOL USED: EDDY CURRENT EQUIPMENT P/N: NORTEC 500D S/N: N500X1693P030457; DUE DATE: 06-AUG-23;[02] TOOLS USED: TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 112031023; DUE DATE: 01-FEB-24; TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 112820025; DUE DATE: 01-FEB-24.<BR>TEMPERATURE: 922 FAHRENHEIT.<BR>TIME: 38 MINUTES.;[03] TOOL USED RADIOMETER PHOTOMETER P/N XRP-3000 S/N 1998072 DUE DATE 03-MAY-23.;[04] PERFORMED PERMANENT REPAIR (CATEGORY A) ON UPPER CHORD OF FLOOR BEAM BST 294.5 . RBL 25 AND WL 208.1 IAW B737-700 SRM 53-10-51-2R-16 REPAIR 16 ALTERNATIVE 2 DETAIL G ; SEE INDIVIDUAL SIGN OFF BELOW;[05] PERFORMED PERMANENT REPAIR (CATEGORY A) ON UPPER CHORD OF FLOOR BEAM BST 294.5 . RBL 25 AND WL 208.1 IAW B737-700 SRM 53-10-51-2R-16 REPAIR 16 ALTERNATIVE 2 DETAIL G ; SEE INDIVIDUAL SIGN OFF BELOW AS RII

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