Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
February 3, 2021
Submitted
March 8, 2021
Operation
Air carrier
Aircraft
N404WN
Make and model
Boeing 7377H4
Aircraft serial
27892
Aircraft time
67,080 hours, 39,612 cycles
Part
Floorbeam
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
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 RAIL AROUND FASTENER HOLE BS727B+3 LBL3 WL156. / PERFORM CUT-OUT FROM BS727+7' TO BS 727B+10' LBL3 WL156 I.A.W SRM 53-00-53-2R-2 STEP 2.F. LOCATED; DRILLED AND COUNTERSANK NEW REPAIRABLE BEAM AND CHANNEL SPLICE I.A.W SRM 53-00-53-2R-2; SRM 51-40-05; AND SRM 51-40-08; APPLIED CHEMICAL CONVERSION COATING AND PRIMER I.A.W SRM 51-40-02-0G-0 AND DWG 146A0061 REV:A AND SRM 53-00-53-2R-2

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