SDR 2000ZZZX110

Service difficulty report · Structure · Cessna 550

Difficulty date: December 14, 1999
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N87SF
Make and model: Cessna 550
Aircraft serial: 5500096
System (JASC): 5510 · Horizontal Stabilizer Structure
Part: Structure
Condition: Misdrilled
Location: Horiz Stabilizer
Part time: 9,856 hours
Component: 55320002
Stage of operation: IN
Nature of condition: W
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING COURSE OF 10,000-HOUR INSPECTION, THE HORIZONTAL STABILIZER WAS FOUND TO HAVE NUMEROUS DOUBLE HOLES, HOLES DRILLED OFF-CENTER, HOLES DRILLED ON AN ANGLE AFTER REMOVAL OF THE HYLOCKS IN THE CENTER SECTION THROUGH ALL SPARS AND FITTINGS. SUBMITTER STATED IT IS VERY OBVIOUS A MANUFACTURING PROBLEM.

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