Service difficulty report · Impeller · Boeing 234

Difficulty date
October 3, 2013
Submitted
October 7, 2013
Operation
General aviation
Make and model
Boeing 234
Aircraft serial
MJ006
Engine
Lyc AL5512
Engine time
4,773 hours
Part
Impeller
Condition
Damaged
Location
Eng Compressor
Part time
4,773 hours
Stage of operation
IN
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

THE ENGINE WAS ORIGINALLY REMOVED FOR HIGH PTIT. HIGH PTIT WAS CONFIRMED IN THE TEST CELL. DURING DISASSEMBLY IT WAS NOTED THAT THERE WAS EVIDENCE OF PLASMA SPRAY EXITING THE AIR DIFFUSER. FURTHER DISASSEMBLY REVEALED A COMPLETE SECTION OF PLASMA REPAIR MISSING AND CATASTROPHIC DAMAGE TO THE COMPRESSOR IMPELLER.

More about the Boeing 234