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 312. / [01] REMOVED CORROSION ON PASSENGER CABIN FLOORBEAM AT LBL 12 BS 312 AREA REWORKED: L: 4' W: 2.1' ORIGINAL THICKNESS 0.125 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;[22] INSTALLED ALL REPAIR PARTS ON PASSENGER CABIN FLOOR BEAM AT BS 312 LBL 19 - RBL 23 IAW SRM 53-10-51-2R-17 REPAIR 17;[23] VERIFIED CORRECTIVE ACTION STEPS 21 AND 22.;[24] VERIFY STEP 2;3 AND 4;[25] VERIFY STEP 1;[26] APPLIED FILLET SEAL AND CIC TO THE REPAIR AREA IAW SRM 53-10-51-2R-17 REPAIR 17;[27] VERIFIED COMPLETE STEPS 1 - 4.;[28] VERIFIED MEASUREMENT TABLE.<BR>VERIFIED CORRECTIVE ACTION #26.

More about the Boeing 737-7H4