Service difficulty report · Flow Divider

Difficulty date
May 27, 2003
Submitted
June 16, 2003
Operation
General aviation
Engine
Pwa PT6A42
Part
Flow Divider
Part number
3036640
Part serial
1936
Condition
Wrong Part
Location
Engine
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
E

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

What was found

(CAN) ENG WAS SHUTOFF IN FLT FOLLOWING HIGH T-5 OCCURRENCE. NO DAMAGE EXTERNALLY & ONLY DAMAGE FOUND INTERNALLY RUBBING CONTACT BETWEEN COMP TURBINE BLADE TIPS & CT SHROUD SEG. NO EVIDENCE OF OVERTEMP, OR ANY BUILD ERRORS IN THE ENG. FLOW DIVIDER HAS WRONGLY IDENTIFIED BODY INSTALLED, THIS ERROR HAS CAUSED DIFFICULTIES IN STARTING AND IN FLT INCIDENT. IN-FLT PROBLEMS OF THIS ENG CAUSED BY FLOW DIVIDER. WRONG BODY BEING INSTALLED ALLOWED OUTLET TO POUR A LOT OF FUEL THROUGH IT. ENG WAS POURING FUEL OUT OF THE FLOW DIVIDER, MADE ENG RUN VERY LEAN IN FUEL & NOT ABLE TO PRODUCE ENOUGH ENERGY TO PROPERLY ACCELERATE DURING THE START CYCLE, LEADING TO ELEVATED TEMP WITH CT BLADE TIP RUB.