SDR 2022FA0000556

Service difficulty report · Floor Support · Cessna 550

Difficulty date: March 11, 2022
Submitted: September 30, 2022
Operation: General aviation
Aircraft: N805LC
Make and model: Cessna 550
Aircraft serial: 5500581
Aircraft time: 11,737 hours, 11,795 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Corroded
Location: Bs 320-333
Part time: 11,737 hours, 11,795 cycles
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

FOUND CORROSION. PERFORMED A STRINGER REPAIR AT BUTT LINE 0.00, FUSELAGE FLIGHT STATION 320-333 FOR A FLANGE BELOW .063 LIMIT. THIS REPAIR WAS MADE IN ACCORDANCE WITH CESSNA'S 550 STRUCTURAL REPAIR MANUAL 53-12-04. THE "BEFORE" ULTRASONIC INSPECTION OF THE DAMAGED PIECES WAS PERFORMED BY APPLIED TECHNICAL SERVICES. AFTER THE DAMAGED PIECES WERE CLEANED OF CORROSION, THE "AFTER" ULTRASONIC INSPECTION OF THE DAMAGED PIECES WAS PERFORMED BY APPLIED TECHNICAL SERVICES.

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