SDR H3AA1

Service difficulty report · Bracket · Gulstm 500B

Difficulty date
November 30, 2004
Submitted
November 30, 2004
Operation
Air carrier
Aircraft
N24KM
Make and model
Gulstm 500B
Aircraft serial
500B129611
Aircraft time
8,756 hours
Engine
Lyc IO540E1A5
Engine time
310 hours
Propeller
Hartzl HCC3YR
Part
Bracket
Part number
37291001501
Condition
Cracked
Location
Turbocharger
Part time
303 hours
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

A CRACK APPROXIMATELY 2.5 INCHES LONG WAS NOTICED IN THE UPPER PORTION OF THE TURBO CHARGER ATTACH BRACKET. UPON REMOVAL OF FROM THE ENGINE MOUNT NUMEROUS CRACKS WERE NOTED RUNNING ALONG WELDS AND THROUGHOUT THE ENTIRE ASSEMBLY. SUBSEQUENT REMOVAL OF THE TURBO MOUNTING ASSEMBLY ON THE RIGHT ENGINE REVEALED CRACKS IN MANY OF THE SAME AREAS. THE CRACKS ARE DIFFICULT TO DETECT UNLESS THE ASSEMBLY IS REMOVED FROM THE ENGINE MOUNT. BOTH UNITS HAVE 303.5 HOURS SINCE NEW. PICTURES OF THESE UNITS ARE AVAILABLE AT YOUR REQUEST.