Service difficulty report · Beam · Boeing 73779P

Difficulty date
December 16, 2022
Submitted
February 7, 2023
Operation
Air carrier
Aircraft
N7855A
Make and model
Boeing 73779P
Aircraft serial
29357
Aircraft time
53,057 hours, 34,450 cycles
Part
Beam
Part number
NOTREPORTED
Part serial
NOTREPORTED
Condition
Corroded
Location
Zn 900 Lav/Galle
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

CORROSION BEAM LOCATED BS986.5 AT LBL37 TO LBL46 AND WL208.1 AT AFT GALLEY AREA 2022-696971<[01] TOOL USED ULTRASONIC THICKNESS INSTRUMENT P/N 35DL S/N 091419910 DUE DATE 26-JAN-23<BR>TOOL USED EDDY CURRENT INSTRUMENT P/N NORTEC500D S/N N500X12101V022235 DUE DATE 03-AUG-23.;[02] TOOL USED: EDDY CURRENT EQUIPMENT. P/N: NORTEC 500D. S/N: N500X12101V022235. DUE DATE: 03-AUG-23.;[03] REPAIRED CORROSION ON BEAM LOCATED BS986.5 AT LBL37 TO LBL44 AND WL208.1 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6 FIGURE 205 ALTERNATIVE 4. SEE INDIVIDUAL SIGN OFFS BELLOW;[04] TASK COMPLETED; RII <BR><BR>SEE INDIVIDUAL SIGN OFFS BELOW

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