Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
October 23, 2024
Submitted
November 14, 2024
Operation
Air carrier
Aircraft
N8510E
Make and model
Boeing 7378H4
Aircraft serial
36944
Aircraft time
26,582 hours, 13,221 cycles
Part
Floorbeam
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 ON HARD POINT ATTACHED TO FLOOR BEAM; AT BS 947.5; RBL51; WL208.<[01] AFTER FURTHER INVESTIGATION FOUND CORROSION LOCATED ON THE UPPER FLANGE OF BS947 RBL51 FLOOR BEAM ONLY. NO CORROSION HAS BEEN FOUND ON HARDPOINT ATTACH FITTING. CORROSION ON FLOOR BEAM OF BS 947; RBL 51; WL208.1 FOUND TO BE OUT OF LIMITS DUE TO 100% MATERIAL LOSS PER SRM 53-70-51-1A-1 ALLOWABLE DAMAGE 1 ON FAULT#TTG8Q00WMS69;[02] VERIFIED CORRECTION ACTION ITEM 1; MEASUREMENT FIELD CARD COMPLETE.

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