Service difficulty report · Support Beam · Boeing 7377H4

Difficulty date
May 4, 2022
Submitted
June 14, 2022
Operation
Air carrier
Aircraft
N286WN
Make and model
Boeing 7377H4
Aircraft serial
32471
Aircraft time
57,746 hours, 34,276 cycles
Part
Support Beam
Condition
Corroded
Location
Fuselage
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* FWD CABIN STA 312 LBL 12 TO LBL 48 WL 208.1 FLOOR SUPPORT BEAM HAS CORROSION AROUND FASTENER HOLES AS MARKED. 124-018 / [01] REMOVED CORROSION AT FWD CABIN STA 312 LBL 12 TO LBL 48 WL 208.1 FLOOR SUPPORT BEAM IAW SRM 51-10-02-0G-0;[02] VERIFIED STEP 1<BR>ACCOMPLISHED A VISUAL INSPECTION WITH A 10 POWER MAGNIFING GLASS OF THE REWORKED AREA NO CORROSION OR CRACKS NOTED. REF SRM 51-10-02-0G-0 STEP 15. A. (6)(A);[24] FABRICATED REPAIR ANGLE (4 EACH) FOR STA 312 FLOOR BEAM. MATERIAL USED: 7075-0; 0.080' (PO#1740779) IAW SRM 53-10-51-2R-17.;[25] HEAT TREATED REPAIR ANGLES (4 EACH) FROM 7075-0 TO 7075-T62 IAW BAC5602 AND SRM 53-10-51-2R-17.;[26] (AMENDING STEP 25) HEAT TREATED REPAIR ANGLES (4 EACH) FROM 7075-0 TO 7075-T62 IAW BAC5602; AAR OP 84-REV 7; AND SRM 53-10-51-2R-17.;[27] VERIFIED STEPS #23; #24; #

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