Service difficulty report · Floorbeam · Boeing 737790

Difficulty date
October 27, 2016
Submitted
November 21, 2016
Operation
Air carrier
Aircraft
N618AS
Make and model
Boeing 737790
Aircraft serial
30543
Aircraft time
54,835 hours, 24,781 cycles
Part
Floorbeam
Part number
147A55068
Condition
Corroded
Location
Fuselage
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

MAIN CABIN FLOORBEAM T-CAP HAS CORROSION AT BS 987, BETWEEN RBL 12 AND RBL 45. GROUNDED - YES. REMOVED CORROSION AND FOUND BEYOND ALLOWABLE LIMITS IAW SRM 53-70-51-1A-1, ORIGINAL MATERIAL THICKNESS IS .150 IN. REMAINING IS .136 IN, REMOVED .014 IN REMOVED, EXISTING TEE CAP SECTIONS AND SPLICE IAW SRM 51-40-02, FABRICATED AND INSTALLED NEW T-CAP REPAIR SECTIONS AND SPLICE IAW SRM 53-70-51-2A-4.