SDR F3LA200100023

Service difficulty report · Crease Beam · Boeing 7373S1

Difficulty date: February 18, 2001
Submitted: February 20, 2001
Operation: Air carrier
Aircraft: N311FL
Make and model: Boeing 7373S1
Aircraft serial: 24856
Aircraft time: 31,627 hours, 19,875 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Crease Beam
Condition: Corroded
Location: Fuselage
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

DURING C-4 CHECK, INSPECTION REPORTED CORROSION AT AFT ENTRY DOOR THRESHOLD, STA 986. MAINTENANCE REMOVED CREASE BEAM, CLEANED UPPER AND LOWER SURFACE BELOW CREASE BEAM, BURNISHED LIGHT SURFACE CORROSION AND FOUND TO BE WITHIN LIMITS. REMOVED DAMAGED DOUBLER, FABRICATED AND INSTALLED REPLACEMENT DOUBLER. FABRICATED AND INSTALLED REPLACEMENT CREASE BEAM. WORK WAS PERFORMED PER SRM 51-40-06 AND 53-60-15.

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