rockydoc Posted February 24, 2014 Report Posted February 24, 2014 How do I determine which motor is in my M20B? O360 AIA or 0360 AID? Thanks for your help. Quote
rbridges Posted February 24, 2014 Report Posted February 24, 2014 I don't know off the top of my head, but your engine logbook should have it. If you wait, I'm sure someone on here knows. Quote
MB65E Posted February 24, 2014 Report Posted February 24, 2014 Look up on the FAA website. FAA.gov. Search TCDS. (Type certificate data sheet) you will be amazed what you can learn about your aircraft! I'm pretty sure it's an o-360-a1a. (But I didn't look it up) Best, -Matt Quote
kerry Posted February 24, 2014 Report Posted February 24, 2014 Should be on your engine data plate on the oil slump. Quote
Dale Logsdon Posted February 24, 2014 Report Posted February 24, 2014 The A1A has impulse mags and the A1D has the shower of sparks mags. On an A1A the mag "clicks" during starting and on the A1D your hear a buzzing sound from under your panel during starting. Quote
carusoam Posted February 24, 2014 Report Posted February 24, 2014 Attention to detail is key in this type of conversation... The title of the thread left me a bit bewildered... M30? The engine model made me say huh? AIA My '65 M20C had an O360-A1D You plane is supposed to have a few documents. Engine log, airframe log are two of the critical ones. It is possible that you bought the plane without them (saving money?) Now would be the time to generate a new set. M20 TCDS.... http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/e74974516b2c5ee886257c3500689e02/$FILE/2A3_Rev_53.pdf Compare your logs to the devices listed for the M20B. In the event you don't have logs, compare your equipment data plates and numbers to the TCDS... Are you with me Rocky? Best regards, -a- Quote
Hank Posted February 24, 2014 Report Posted February 24, 2014 Actually, your Mooney has an engine up front spinning the propeller. My Mooney has a motor to raise and lower the landing gear. Quote
rockydoc Posted February 24, 2014 Author Report Posted February 24, 2014 The problem is that the engine log books have conflicting data. BOTH O360 AIA and O360 AID. Guess I'll just have to uncowl the motor and check the number on the oil sump. Thanks for all the constructive comments. Quote
rockydoc Posted February 24, 2014 Author Report Posted February 24, 2014 Attention to detail is key in this type of conversation... The title of the thread left me a bit bewildered... M30? The engine model made me say huh? AIA My '65 M20C had an O360-A1D You plane is supposed to have a few documents. Engine log, airframe log are two of the critical ones. It is possible that you bought the plane without them (saving money?) Now would be the time to generate a new set. M20 TCDS.... http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/e74974516b2c5ee886257c3500689e02/$FILE/2A3_Rev_53.pdf Compare your logs to the devices listed for the M20B. In the event you don't have logs, compare your equipment data plates and numbers to the TCDS... Are you with me Rocky? Best regards, -a- Yep, I'm with you. Thanks. R Quote
Wakeup Posted February 25, 2014 Report Posted February 25, 2014 My logbooks on M20B have it listed different as well?? Looks like mine had a AID then at some point it got a new engine from the factory saying AID. I will have to pay attention to the sounds next time I fly. Troy Quote
cliffy Posted February 25, 2014 Report Posted February 25, 2014 Chock the airplane and have it tied down. Make sure the mags are OFF- NO KEY IN THE IGNITION! Go pull the prop through a few blades. If you hear clicking every time you pull it through you have impulse mags- A1A engine. If you don't hear the clicking- A1D Shower of Sparks. Looking at the data plate on the side of the oil sump is the final determinant. Quote
SkyPilot Posted February 25, 2014 Report Posted February 25, 2014 Ok so any opinions on which is better? Shower of sparks or impulse? Quote
cliffy Posted February 26, 2014 Report Posted February 26, 2014 Flip a coin! Impuses have an AD and Shower of Sparks sometimes fails (vary rarely) Quote
PLN_FXR Posted February 26, 2014 Report Posted February 26, 2014 Ok so any opinions on which is better? Shower of sparks or impulse? The shower of sparks generally gives a better start, but if your battery is dead it is almost impossible to hand prop (not that any Mooney is easy to hand prop, as they are so low to the ground). Impulse couplings are subject to wear and failure (but so are starting vibrators). In general - it depends on your preference, as both systems work fine. Quote
Guest Posted February 26, 2014 Report Posted February 26, 2014 Chock the airplane and have it tied down. Make sure the mags are OFF- NO KEY IN THE IGNITION! Go pull the prop through a few blades. If you hear clicking every time you pull it through you have impulse mags- A1A engine. If you don't hear the clicking- A1D Shower of Sparks. Looking at the data plate on the side of the oil sump is the final determinant. Why not just open the left side engine cowl and look at the left magneto. If it has two wires attached to it(other than the ground wire) it has shower of sparks. I once cranked an engine over in my shop trying the figure out a starter issue, with the fuel off, mixture in ICO, throttle closed, it still started and ran for about five seconds. Clarence Quote
rockydoc Posted February 27, 2014 Author Report Posted February 27, 2014 Why not just open the left side engine cowl and look at the left magneto. If it has two wires attached to it(other than the ground wire) it has shower of sparks. I once cranked an engine over in my shop trying the figure out a starter issue, with the fuel off, mixture in ICO, throttle closed, it still started and ran for about five seconds. Clarence Sounds like the easiest way yet to be 100% certain. Thanks for the information. R Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.