Service difficulty report · Needle · Diamon DA20A1

Difficulty date
February 13, 2000
Submitted
January 19, 2001
Operation
Air carrier
Make and model
Diamon DA20A1
Aircraft time
1,881 hours
Engine
Rotax ROTAX912
Part
Needle
Part number
961215
Condition
Broken
Location
Carburetor
Part time
1,716 hours
Component
Carburator · 6413213921F
Stage of operation
CR
How discovered
O
Nature of condition
E
Precautionary procedure
B

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

What was found

(CAN) THE CIRCLIP WHICH RETAINS THE JET NEEDLE HAS WORN THRU THE JET NEEDLE STEM, CAUSING THE NEEDLE TO BREAK. THIS CAUSED A ROUGH RUNNING ENGINE AND LOSS OF POWER.UPON FURTHER INVESTIGATION THE OTHER JETNEEDLE WAS ALSO BADLY WORN. BOTH NEEDLES REPLACED.// FURTHER INPUT FROM SUBMITTER AND TECH REP SUJESTSFAILURE TO FOLLOW PRESCRIBED MAINTENANCE SCHEDULE INSPECTION CRITERIA OF 200 HOUR TIME INTERVAL FOR THIS ITEM.ROTAX HAS APPROACHED BING CARBURETOR AND IS LOOKING INTO THE INCORPORATION OF A MOD WHICH WOULD ENABLE THE MODIFICATION OF THE JET AS IS CURRENTLY UTILIZED ON THE 912S MODEL WHICH DOES NOT EXPERIENCE THE SAME WEAR FAILURE. PROJECT 20000095

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