SDR 07FDEA04742

Service difficulty report · Keelbeam · Boeing 727225

Difficulty date: November 7, 2007
Submitted: November 7, 2007
Operation: Air carrier
Aircraft: N464FE
Make and model: Boeing 727225
Aircraft serial: 21288
Aircraft time: 52,271 hours, 37,220 cycles
System (JASC): 5314 · Fuselage Main, Keel
Part: Keelbeam
Part number: 6518636
Condition: Corroded
Location: Zone 100
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

LOWER FUSELAGE STATION 742, RBL 1 TO RBL 4, KEEL BEAM LOWER WEB CORRODED, REMOVED CORROSION IN REF TO SRM 51-10-1 PG 1, ORIG MAT'L .080, MAT'L REMAINING .045', OUT OF LIMITS. REMOVED DAMAGE AREA OF KEEL BEAM WEB 51-10-2 PG 10. FABRICATED DOUBLER AND FILLER IN REF TO SRM 51-40-2 FIG 1. TREAT AND PRIMED DOUBLER AND FILLER AND INSTALLED REF MM 51-20-021-07, MM 51-20-031-07.