SDR FDEA200907302842

Service difficulty report · Floorbeam · Boeing 75721B

Difficulty date: July 30, 2009
Submitted: July 30, 2009
Operation: Air carrier
Aircraft: N933FD
Make and model: Boeing 75721B
Aircraft serial: 24330
Aircraft time: 52,447 hours, 30,243 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Part number: 146N5091
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

STA 1681, RBL 47.5 INCH FLOORBEAM UPPER CHORD BOTTOM CORRODED. CORROSION ON FLOORBEAM FOUND EXCEEDED SRM ALLOWABLE DAMAGE LIMITS. REPAIR CARRIED OUT IAW EA F-5310-126226, CORROSION ON FLOORBEAM 1681.80, MULTIPLE LOCATIONS - REPAIR. REPAIR IS CLASSIFIED AS MAJOR IAW GMM 6-2-100 CRITERIA.

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