SDR USAA951168

Service difficulty report · Floor Beam · Boeing 737401

Difficulty date: November 3, 1995
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N417US
Make and model: Boeing 737401
Aircraft serial: 23984
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floor Beam
Condition: Cracked
Location: Bs 520
Part time: 19,934 hours
Stage of operation: IN
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

INT - DURING Q-5 CHECK NDT INSPECTION, FOUND 1.25 INCH CRACK FLOOR BEAM, .75 INCH CRACK SEAT TRACK SUPPORT CHANNEL DETECTED BY VISUAL INSPECTION, STATION 520 FLOOR BEAM LBL 25, WL 207.75. DOUBLERS INSTALLED PER EA 40020, REF SB 737-53-1120. REPAIRED PER EA 40020, REF SB 737-53-1120. (M)