SDR 99ZZZX1989

Service difficulty report · Cylinder

Difficulty date: February 22, 1999
Submitted: March 26, 2000
Operation: General aviation
Engine: Cont IO520*
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder
Condition: Mismanufactured
Location: Engine
Stage of operation: IN
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

NATIONAL VENDOR SUPPLIED A NEW FACTORY IO520 CYLINDER. INSPECTION OF CARTON, NO SIGNS OF DAMAGE. INSPECTION OF CYLINDER SHOWS WHAT APPEARS TO BE A HAMMER BLOW TO THE INTAKE ROCKER BOSS MAKING A NEW CYLINDER SCRAP. VENDOR SUPPLIED ANOTHER NEW CYLINDER AND INSPECTION SHOWED ROCKER ARMS WOULD NOT FIT INTO THE BOSSES. UNFINISHED WORK. VENDOR SUPPLIED A 3RD CYLINDER - (NEW).