SDR CNMA20100015

Service difficulty report · Floorbeam · Doug DC1030

Difficulty date: April 1, 2010
Submitted: May 19, 2010
Operation: Air carrier
Aircraft: N621AX
Make and model: Doug DC1030
Aircraft serial: 48319
Aircraft time: 65,741 hours, 11,005 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Bs 2007
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

BS 2007, LBL16 CORROSION ON THE TEE CHORD FLOOR STRUCTURE. CORRODED SECTION OF CHORD WAS TRIMMED OUT. NEW SECTION FABRICATED FROM THE TEE PN NJC6040-175 WAS INSTALLED WITH SPLICES PN N621AX-NRC387-1/-2 IAW SRM VOL I 53-40-00, FIG 16 AND USING FASTENERS IAW SRM VOL II, 51-33-01, PAGE 34, BACB30MYGKGX.

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