Triumph1974
Well Known Member
In the interest of trying to understand what commonalities may exist in situation of airplane engines having sticking valves, and perhaps potentially help avoiding the occurrence in the future, (I had it happen many years ago in a Cessna 152 when going to meet the examiner for the FAA private check ride...which made for a long day to say the least) I am starting to create a central repository of data from those that have the 1st hand experience of a stuck valve....unless someone knows of any such database that already exist...and this project will be called off.
For now it will be an excel spreadsheet, with the following fields (feel free to comment if other data points should be added for collection purposes).
"Required" Requested Fields: Engine Type, Cylinder Manufacture, Brand of Oil, Weight/type of Oil, Any Engine Additives Used, If so what type of oil additive, and frequency of use, Frequency of normal oil change interval, Oil burn per every 20 hrs. Fuel Type, Any fuel additives used (MMO) etc., Hours since last Overhaul, Hours on Cylinder with the sticking valve, Estimated annual hours flown last 12 months on engine, estimated hrs. flown prior 24 months, State of flight when the valve stuck - Climb, Cruise, decent or taxi, Date of sticking valve occurrence.
Optional Fields: Normal CHT temps in Climb, Cruise, Decent, Normal EGT temps, Cruise at ROP, or LOP, Description of typical engine shut down procedure (Ex: Run engine to 1200 RMP for 20 secs to ensure cylinders are at 300 degrees prior to shut down, or no specific shut down procedure), Description of any prior notice of odd behavior of the engine prior to the sticking valve, "Other" info field, airplane type, N number.
Pilots can submit their info on their 1st hand experience on the sticky valve to the following email address@ valvedata@protonmail dotcom (the dot is a . for typical email formatting). The email will be monitored monthly, so please don't except a quick reply, but I will respond to each pilot submitting data to the database to confirm your receipt, or desire to submit data. I will likely send pilots wishing to contribute data to the project a fillable form of some type....just haven't figured out the best way to do that yet.
Thanks for spreading the word about the data collection project - it doesn't have to be only RV limited. Once there is a reasonable amount of data submissions I can report back out and share the info.
Thanks,
Paul
RV7A, O360
For now it will be an excel spreadsheet, with the following fields (feel free to comment if other data points should be added for collection purposes).
"Required" Requested Fields: Engine Type, Cylinder Manufacture, Brand of Oil, Weight/type of Oil, Any Engine Additives Used, If so what type of oil additive, and frequency of use, Frequency of normal oil change interval, Oil burn per every 20 hrs. Fuel Type, Any fuel additives used (MMO) etc., Hours since last Overhaul, Hours on Cylinder with the sticking valve, Estimated annual hours flown last 12 months on engine, estimated hrs. flown prior 24 months, State of flight when the valve stuck - Climb, Cruise, decent or taxi, Date of sticking valve occurrence.
Optional Fields: Normal CHT temps in Climb, Cruise, Decent, Normal EGT temps, Cruise at ROP, or LOP, Description of typical engine shut down procedure (Ex: Run engine to 1200 RMP for 20 secs to ensure cylinders are at 300 degrees prior to shut down, or no specific shut down procedure), Description of any prior notice of odd behavior of the engine prior to the sticking valve, "Other" info field, airplane type, N number.
Pilots can submit their info on their 1st hand experience on the sticky valve to the following email address@ valvedata@protonmail dotcom (the dot is a . for typical email formatting). The email will be monitored monthly, so please don't except a quick reply, but I will respond to each pilot submitting data to the database to confirm your receipt, or desire to submit data. I will likely send pilots wishing to contribute data to the project a fillable form of some type....just haven't figured out the best way to do that yet.
Thanks for spreading the word about the data collection project - it doesn't have to be only RV limited. Once there is a reasonable amount of data submissions I can report back out and share the info.
Thanks,
Paul
RV7A, O360