SDR FDEA201108293563

Service difficulty report · Keelbeam · Boeing 727247

Difficulty date: August 29, 2011
Submitted: September 2, 2011
Operation: Air carrier
Aircraft: N236FE
Make and model: Boeing 727247
Aircraft serial: 21330
Aircraft time: 69,823 hours, 48,693 cycles
System (JASC): 5314 · Fuselage Main, Keel
Part: Keelbeam
Condition: Corroded
Location: Bs 740
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

FWD END OF UPPER KEELBEAM BREATHER WEB AT FS 740 CORRODED COMPLETELY THROUGH WEB, WITH SEVERAL MORE AREAS OF SEVERE CORROSION IN SAME VICINITY. REMOVED DAMAGED KEEL BEAM STIFFNER PLATE, LOCATED DRILLED & INSTALLED NEW STIFFNER PLATE IAW SRM 51-30-5, SRM 51-10-2, & SRM 51-30-2, AND DWG 65-23555.