SDR F3LA98108

Service difficulty report · Keel Beam · Boeing 737301

Difficulty date: June 23, 1998
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N578US
Make and model: Boeing 737301
Aircraft serial: 23257
System (JASC): 5314 · Fuselage Main, Keel
Part: Keel Beam
Condition: Corroded
Location: Bs 594-639
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

PAE - DURING C-CHECK INSPECTION, REPORTED 5 LONGITUDINAL BEAM NUT PLATE HOLES DAMAGED AT BS 594-639, RBL 25, WL 208 AT INBOARD SIDE OF FLANGE. MAINTENANCE BLENDED CORROSION AT NUTPLTE HOLES AT BS 594 (1.5 INBH BY 1 INCH BY .032 INCH) BS 600 (1 INCH BY 7 INCH), BS 627 (.7 INCH BY .6 INCH), BS 649 (1.3 INCH BY .8 INCH), AND BS 639 (.5 INBH BY .5 INCH BY .002 INCH) AND REPAIRED PER ERO NR 98-0571. (M)