Service difficulty report · Floor Support · Boeing 757222

Difficulty date
February 23, 2018
Submitted
February 24, 2018
Operation
Air carrier
Aircraft
N502UA
Make and model
Boeing 757222
Aircraft serial
24623
Aircraft time
94,355 hours, 27,226 cycles
Part
Floor Support
Part number
146N5416
Condition
Corroded
Location
Bs1200 Rbl2.9
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

AFT CARGO FLOOR SUPPORT STR RBL 2.9 BETWEEN APPROX BS 1200 TO BS 1290 HAS CORROSION IN MULTIPLE AREAS. REMOVED CORROSION 3EA AREA FLOOR STR RBL 2.9 BETWEEN STA 1200-1 290 DIMENSION L=5 INCH X W=.400 X D=.063. FOUND 100" OUT OF LIMITS IAW SRM 53-00-53 FIG 101 DETAIL V 1)L=2 INCH X W=400 X D=.003 2)L=1 INCH W=400 X D=.004 3)L=2.5 INCH X W=400 X D=.00 2, MAT ORIGINAL THICKNESS .063 IAW BAC1517-2226, FOUND AREA WITHIN LIMITS IAW SRM 53-00-53 FIG 101, DETAIL V PG 105. REMOVED AND REPLACED FLOOR SUPPORT STRINGER AT AFT CARGO BETWEEN S TA 1200-1340 RBL 2.9 IAW SRM 51-40-02 PG 6 & DWG 146N54 10.