N3417X Posted July 9, 2015 Report Posted July 9, 2015 I'm trying to buy an ACS ignition switch with "off, left, right, and start" but I can't find the part number, making it hard to purchase one. Does anyone have any idea what the part number is? Dennis Quote
OR75 Posted July 9, 2015 Report Posted July 9, 2015 easy to find ...check the Aircraft Spruce website or Chief Aircraft or other , they all have a search function Quote
N33GG Posted July 9, 2015 Report Posted July 9, 2015 If it is for shower of sparks system, you may/will need a special switch. Quote
Mooneymite Posted July 9, 2015 Report Posted July 9, 2015 You didn't say why you're in the market for a replacement, but be aware that Bendix makes a re-build kit for the push-to-start ignition switches. Once the switch is out of the panel, the kit is a very simple install. Costs about 1/3 of a new switch. Quote
Andy95W Posted July 10, 2015 Report Posted July 10, 2015 This was covered in another thread about a year or two ago. Using the search will probably find it. Your M20E needs the ignition switch with the push to start, in order to activate the shower of sparks prior to engaging the starter. The ACS switch doesn't have that and would not be legal or appropriate for our older Mooneys. I know there are folks here who don't have the push to start switches, and they probably work just fine, but it's not approved or right. Quote
N601RX Posted July 10, 2015 Report Posted July 10, 2015 Does the Mooney retrofit kit possibly allow a different style switch? Quote
Andy95W Posted July 10, 2015 Report Posted July 10, 2015 Per Bendix Service Bulletin SB 583, Ignition Switch part number 10-357210-1 is the replacement for the old 10-126680-2. I believe this is the basis for the "Mooney Retrofit Kit" noted. I'm not saying I know this 100%, so hopefully someone else can shed some light on it. Also found it interesting the split in the two different ignition switch Retrofit Kits- I believe that was the split between shower of sparks and impulse couplings. Again, maybe someone else can shed some light here. Quote
1964-M20E Posted July 10, 2015 Report Posted July 10, 2015 Here is the switch at AS. There is a wiring diagram to install it with shower of sparks see attached. Essentially the SOS is wired together with the starter solenoid. The SOS is activated at the same time as the starter solenoid. http://www.aircraftspruce.com/catalog/elpages/igswitches2.php Quote
Jerry 5TJ Posted July 10, 2015 Report Posted July 10, 2015 I had an MSC install an ACS switch in the "C" three years ago. They replaced a failing original Bendix switch. Now the key doesn't fall out during flight any more, an additional benefit. The correct ACS switch for a vintage Mooney is the version with the start position, ACS part number A-510-2. It works with the 2-terminal Shower of Sparks. ACS switches manufactured after 1989 don't need the kit mentioned in the ACS SB and don't have to be reinspected per SB for 2,000 hours. Quote
MyNameIsNobody Posted July 10, 2015 Report Posted July 10, 2015 The one key fitting all is worth the price of admission... 1 Quote
Andy95W Posted July 11, 2015 Report Posted July 11, 2015 I had an MSC install an ACS switch in the "C" three years ago. They replaced a failing original Bendix switch. Now the key doesn't fall out during flight any more, an additional benefit. The correct ACS switch for a vintage Mooney is the version with the start position, ACS part number A-510-2. It works with the 2-terminal Shower of Sparks. ACS switches manufactured after 1989 don't need the kit mentioned in the ACS SB and don't have to be reinspected per SB for 2,000 hours. What was the basis for the MSC to install the switch? I would love to install one in my airplane but the way I read the rules it would be a Major Alteration and I don't feel like messing with the Field Approval. Was it just a logbook entry, or was there a 337 associated with the installation? And how well does it work, and are you happy with it? Quote
ryoder Posted July 11, 2015 Report Posted July 11, 2015 I got a replacement from aircraft spruce and it is push to start. Cost around 350. Works great. You can probably find it in my old threads. Quote
Andy95W Posted July 12, 2015 Report Posted July 12, 2015 Here is the switch at AS. There is a wiring diagram to install it with shower of sparks see attached. Essentially the SOS is wired together with the starter solenoid. The SOS is activated at the same time as the starter solenoid. http://www.aircraftspruce.com/catalog/elpages/igswitches2.php I had an MSC install an ACS switch in the "C" three years ago. They replaced a failing original Bendix switch. Now the key doesn't fall out during flight any more, an additional benefit. The correct ACS switch for a vintage Mooney is the version with the start position, ACS part number A-510-2. It works with the 2-terminal Shower of Sparks. ACS switches manufactured after 1989 don't need the kit mentioned in the ACS SB and don't have to be reinspected per SB for 2,000 hours. I was really hoping someone could share with me how they got an Aircraft Spruce switch in their airplane. I've seen them in an experimental and was impressed by the quality, but wondered about the legality. Please PM me if you're not comfortable posting publicly. I do my own work and sign my own logbooks. I am just curious how others (such as an MSC) have justified the installation. Quote
ryoder Posted July 13, 2015 Report Posted July 13, 2015 My ignition switch is a continental and is the approved replacement. http://www.aircraftspruce.com/catalog/elpages/bendixswitches.php?clickkey=43807 Looks like it's 399. Quote
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