Deweyclawson
Well Known Member
I recently purchased a 2012 RV10, 390 hrs, TTSMOH, TT airframe. IO540, Blended Airfoil Hartzell CS, MT prop controller.
I flew it home from TX, 7hrs, and Tue flew about an hour. Wed I took a puppy to just S of Albany, NY (2 hrs) and another guy took her on to her furever home in Maine. I took off on the return leg and was level at 8,000 IFR, just on top of the clag, about 63% power, 22inches, 2100rpm, or so and about to lean and the rpm ran away. 2700rom.
Yanked the throttle back, could not change the rpm with the prop lever. Prop had gone to flat pitch. Next thing I looked at was oil press. All OK. Started immediate turn back toward lower ground (was over the Catskills) and better wx and said the magic word....EMERGENCY. Landed at Kingston-Ulster airport, NY.
Found the only mechanic on the field. He was in the middle of 2 week vacation but came in to help me. We talked to Penn Yan and to NE Propeller Service. They gave us some ideas to look at.
1. Linkage was connected and worked OK ran eng and prop was not controllable.
2. Moved the prop by hand and each blade moved OK. rotate blades. OK
3. Stick a paper clip in the zirk fittings on the prop. Only grease in there.. OK
4. Removed the oil filter and inspected it for metal shavings. Looked OK. Front main bearing hasn't spun and blocked the oil passage.
5. Removed prop governor and drove 3 hours to New England Prop Service. They tested the governor and it checks OK.
Drove home 10 hours.
Out of ideas.
HELP!!!
I flew it home from TX, 7hrs, and Tue flew about an hour. Wed I took a puppy to just S of Albany, NY (2 hrs) and another guy took her on to her furever home in Maine. I took off on the return leg and was level at 8,000 IFR, just on top of the clag, about 63% power, 22inches, 2100rpm, or so and about to lean and the rpm ran away. 2700rom.
Yanked the throttle back, could not change the rpm with the prop lever. Prop had gone to flat pitch. Next thing I looked at was oil press. All OK. Started immediate turn back toward lower ground (was over the Catskills) and better wx and said the magic word....EMERGENCY. Landed at Kingston-Ulster airport, NY.
Found the only mechanic on the field. He was in the middle of 2 week vacation but came in to help me. We talked to Penn Yan and to NE Propeller Service. They gave us some ideas to look at.
1. Linkage was connected and worked OK ran eng and prop was not controllable.
2. Moved the prop by hand and each blade moved OK. rotate blades. OK
3. Stick a paper clip in the zirk fittings on the prop. Only grease in there.. OK
4. Removed the oil filter and inspected it for metal shavings. Looked OK. Front main bearing hasn't spun and blocked the oil passage.
5. Removed prop governor and drove 3 hours to New England Prop Service. They tested the governor and it checks OK.
Drove home 10 hours.
Out of ideas.
HELP!!!