Service difficulty report · Beam · Boeing 73779P

Difficulty date
April 25, 2023
Submitted
May 26, 2023
Operation
Air carrier
Aircraft
N7860A
Make and model
Boeing 73779P
Aircraft serial
29362
Aircraft time
49,661 hours, 34,220 cycles
Part
Beam
Condition
Corroded
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

CORROSION FLOOR BEAM LOCATED AT STA312 AND BTW LBL12 AND LBL26.6 TO WL 208.1 AT FWD GALLEY AREA 2023-282627<[01] TOOL USED DIGITAL CALIPER P/N: 500-196-30; S/N: A22046819; DUE DATE: 22-JUN-23;[02] TOOL USED: ULTRASONIC EQUIPMENT P/N: 45 MG; S/N: 130060401; DUE DATE: 20-MAR-24.;[03] REMOVED CORROSION I.A.W B737-700 SRM 51-10-02 AND EVALUATED REWORKED AREA AND FOUND WITHIN LIMITS. LOCATED ON FLOOR BEAM LOCATED AT STA312 AND BTW LBL12 AND LBL26.6 TO WL 208.1 AT FWD GALLEY AREA I.A.W. B737-700 SRM 53-10-51-1A-1; STEP 4.H(2); FIGURE 105; SHEET 1; ITEM ?C?<BR>SEE INDIVIDUAL SIGN OFF BELOW;[04] REMOVED CORROSION I.A.W B737-700 SRM 51-10-02 AND EVALUATED REWORKED AREA AND FOUND WITHIN LIMITS. LOCATED ON FLOOR BEAM LOCATED AT STA312 AND BTW LBL12 AND LBL26.6 TO WL 208.1 AT FWD GALLEY AREA I.A.W. B737-700 SRM 53-10-51-1A-1; STEP 4.H(2); FIGURE 105; SHEET 1; ITEM ?C? <BR>SEE INDIVIDUAL SIGN OFF BELOW RII ITEM

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