Service difficulty report · Floorbeam · Boeing 737990ER

Difficulty date
April 27, 2026
Submitted
May 21, 2026
Operation
Air carrier
Aircraft
N464AS
Make and model
Boeing 737990ER
Aircraft serial
40714
Aircraft time
38,179 hours, 11,725 cycles
Part
Floorbeam
Part number
147A550423
Condition
Corroded
Location
Zone 200
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

FLOORBEAM STA 947 IS CORRODED TOP SURFACE AT RH OTBD LAV MOUNT. GROUNDED - YES. REPAIRED FLOORBEAM STA 947 RBL9-RBL57 IAW ASA EA 900ER-53EA-30248 REV00W= .850" O= .180" R= .101" L= 1.5" D= .079.