Service difficulty report · Floorbeam · Boeing 727227

Difficulty date
June 28, 2010
Submitted
July 9, 2010
Operation
Air carrier
Aircraft
N486FE
Make and model
Boeing 727227
Aircraft serial
21489
Aircraft time
40,827 hours, 30,637 cycles
Part
Floorbeam
Part number
6520827158
Condition
Corroded
Location
Bs 720
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 LOWER FLANGE OF FLOORBEAM AT BS 720 AROUND FASTENER HOLES RBL 25 TO LBL 25 CORROSION OUT OF LIMITS. CUT OUT DAMAGED AREA DIMS 2.8" X .9", FABRICATED REPAIR ANGLES USING 2024-O .041 DIMS 14.3" X 2.2" AND 20.5" X 2.4", HEAT TREATED ANGLES TO T6 CONDITION IAW FASI ENG REPORT 2-37153-801 REV A, FABRICATED REPAIR FILLER USING 7075T-6 .125 DIMS 2.8" X .9", INSTALLED REPAIR PARTS IAW SRM 53-10-8, AND 51-10-2.