Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
August 12, 2024
Submitted
September 19, 2024
Operation
Air carrier
Aircraft
N495WN
Make and model
Boeing 7377H4
Aircraft serial
33869
Aircraft time
65,436 hours, 38,932 cycles
Part
Stringer
Condition
Cracked
Location
Zone 100
Stage of operation
IN
How discovered
V
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 STRINGER 27L LOCATED BS 540 AT FWD CARGO COMPARTMENT 2024-489310<[01] TOOL USED: ULTRASONIC EQUIPMENT P/N 45MG S/N 13066401 DUE DATE: 05-OCT-24.;[02] TOOL USED: ULTRASONIC EQUIPMENT P/N 45MG S/N 13066401 DUE DATE: 05-OCT-24.;[03] TOOL USED ON STEP 8: EDDY CURRENT EQUIPMENT; P/N: NORTEC 600D; S/N:210138003; DUE DATE: 11-JUN-25.;[04] TOOLS USED TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 142811020; DUE DATE: 23-JAN-25 AND TEMPERATURE CONTROLLED P/N: P3015GOES00000; S/N: 112811019;DUE DATE: 23-JAN-25.;[05] REJECT. REPAIR PARTS DOES NOT MEET MINIMUM NUMBER OF FASTENERS THAT ARE NEEDED ON EACH SIDE OF THE DAMAGE CUTOUT TO INITIAL STRINGER THICKNESS 0.056? PER B737-700 SRM 53-00-03-2R-1 REP.1 TABLE 201. <BR>FAULT RAISED TTG8Q00VJJX5.;[06] FAULT TTG8Q00VJJX5 COMPLETED.;[07] PERFORMED PERMANENT REPAIR AT STRINGER 27L LOCATED BTW BS500D PLUS 10? AND BS540 AT FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 MATERIAL USED:ALUMINUM SHEET; STRINGER (1 EA) AND CHANNEL (1 EA) MATERIAL P/N: 7075-T0/0.056/0.063 INCH PO. 2024-190284/2024-121305 HEAT TREATED AND CONVERTED FROM 7075-T0 TO CONDITION 7075-T6; ANGLE 2E/A MATERIAL USED P/N:BAC1493-574;PO: 2024 176290.SEE INDIVIDUAL SIGN OFF BELOW.;[08] TASK COMPLETED ; RII <BR>SEE INDIVIDUAL SIGN OFF BELOW.

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