Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
June 14, 2022
Submitted
July 14, 2022
Operation
Air carrier
Aircraft
N488WN
Make and model
Boeing 7377H4
Aircraft serial
33853
Aircraft time
59,468 hours, 35,169 cycles
Part
Floorbeam
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 ON PASSENGER CABIN FLOORBEAM AT LBL 12 BS 294. / [01] REMOVED CORROSION ON PASSENGER CABIN FLOORBEAM AT LBL 12 BS 294 AREA REWORKED: L: 5' W: 2.1' ORIGINAL THICKNESS 0.100' MATERIAL REMOVED MORE THAN 50% FOUND TO BE OUT OF LIMIT; IAW SRM 53-10-51-1A-1<BR><BR>TOOL USED ID: ATS2473 CAL DUE: 07/2022<BR>TOOL USED ID: ATS1672 CAL DUE: 03/2023;[14] INSTALLED ALL REPAIR PARTS AT FLOOR BEAM BS 294 BETWEEN LBL 21 TO RBL 25 PER SRM 53-10-51-2R-16 REP. 16;[15] VERIFIED CORRECTIVE ACTION STEP 14.;[16] APPLIED FILLET SEAL AND APPLIED CIC AT REPAIR AREA BS 294 FLOORBEAM BETWEEN RBL25 TO LBL 21 PER SRM 53-10-51-2R-16 REP. 16;[17] VERIFIED CORRECTIVE ACTION #16.;[18] VERIFIED MEASUREMENT TABLE.

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