M20S Driver Posted July 6, 2016 Report Posted July 6, 2016 My Taxi Light stopped working and seems to have a marginal contact in the Positronic connector in the circuit breaker box. I found the attached service bulletin describing the issue. Has anyone installed this kit on their planes and was was the failure mode? I measure 24 volts at the Taxi light switch and it drops to .1 volts as soon as the switch is turned on. Driver M20-286--Landing and Taxi Light.pdf Quote
M20S Driver Posted September 20, 2016 Author Report Posted September 20, 2016 I did the M20-286 SB to fix my Taxi light. It was not cheap I recommend that you review the SB and if your plane is listed, install LED's ASAP and save money --- The kit ( just wires and connectors) alone is $300.00 then add in the labor and down time ++++. Driver Quote
carusoam Posted September 21, 2016 Report Posted September 21, 2016 The SB is regarding the wrong size connectors being used for the load. LEDs sounds like a good solution. Best regards, -a- Quote
LANCECASPER Posted September 21, 2016 Report Posted September 21, 2016 Good deals on Landing and Taxi Lights http://www.ebay.com/itm/112042221702?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 http://www.ebay.com/itm/112042219796?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 2 Quote
M20S Driver Posted September 21, 2016 Author Report Posted September 21, 2016 I saw the taxi light above on a Cessna. It looked brighter than my GE 4596 which is 250W. In reality, it is rated lower than the GE (150K candle power) but seems brighter-- Don't know if it is due to color, angle or what? Quote
Alan Fox Posted September 21, 2016 Report Posted September 21, 2016 It is the color , but regardless of the candlepower , they work better and use almost no current , I sell the same ones Lance sells for 60 each.....I have had no complaints..... Quote
PTK Posted September 21, 2016 Report Posted September 21, 2016 8 hours ago, LANCECASPER said: Good deals on Landing and Taxi Lights http://www.ebay.com/itm/112042221702?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 http://www.ebay.com/itm/112042219796?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 Do these come in a PAR46 for the J landing light? I'll keep it on all the time! Quote
LANCECASPER Posted September 21, 2016 Report Posted September 21, 2016 Least expensive PAR46 I could find is this: http://www.chiefsupply.com/spotlight-replacement-super-led-drop-in.html Quote
kris_adams Posted September 21, 2016 Report Posted September 21, 2016 5 hours ago, LANCECASPER said: Least expensive PAR46 I could find is this: http://www.chiefsupply.com/spotlight-replacement-super-led-drop-in.html I'm on the road away from 79H. Can someone confirm this will work on a 79-J? Quote
carusoam Posted September 21, 2016 Report Posted September 21, 2016 Mooneys have two sizes of landing and taxi lights. 1) Wing mounted are PAR36 2) Cowl mounted are usually PAR46 PAR sizes are inches and parts of an inch. A PAR 36 is three inches and some parts in diameter. PAR 46 is four and some parts inches in diameter... Back in the day, this was somehow a helpful system to size an object. Best regards, -a- 1 Quote
ArtVandelay Posted September 21, 2016 Report Posted September 21, 2016 Mooneys have two sizes of landing and taxi lights. 1) Wing mounted are PAR36 2) Cowl mounted are usually PAR46 PAR sizes are inches and parts of an inch. A PAR 36 is three inches and some parts in diameter. PAR 46 is four and some parts inches in diameter... Back in the day, this was somehow a helpful system to size an object. Best regards, -a- Par36 are 4.5 inches...so for that to be right, 36 would need to be 3 in + 6*1/4 in. 1 Quote
DonMuncy Posted September 21, 2016 Report Posted September 21, 2016 7 hours ago, Alan Fox said: It is the color , but regardless of the candlepower , they work better and use almost no current , I sell the same ones Lance sells for 60 each.....I have had no complaints..... Which lights do you sell. Quote
TWinter Posted September 21, 2016 Report Posted September 21, 2016 Or this: https://www.amazon.com/gp/product/B009LQG64S/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Used this for a couple years as a drop in on my E..No it's not, but it worked excellent. -Tom 1 Quote
carusoam Posted September 21, 2016 Report Posted September 21, 2016 Update... two sizes... Big: Par 46... 5.35" (nominal 5 1/2") Small: Par 36... 4.38" (nominal 4 1/2") http://www.whelen.com/install/147/14793.pdf PAR has become synonymous with 'style' they have left the word size hidden somewhere... last page of this doc has the sizes.... http://www.whelen.com/pb/Aviation/Catalog Price Lists and Manuals/Parmetheus Plus Brochure_Email.pdf For some history on the parabolic reflector standard... https://en.m.wikipedia.org/wiki/Parabolic_aluminized_reflector_light Thanks to TJ for describing the relic standard. I completely forgot how that worked... Best regards, -a- Quote
Brandontwalker Posted September 22, 2016 Report Posted September 22, 2016 5 hours ago, LANCECASPER said: Least expensive PAR46 I could find is this: http://www.chiefsupply.com/spotlight-replacement-super-led-drop-in.html I'm on the road away from 79H. Can someone confirm this will work on a 79-J? I have one on my 77 J. I assume yours is the same. I must say that it is marginal at best. I would never go back with the incandescent, but have given strong consideration to the Sunspot. It's price just needs to come down by half b/c I'm a CB. Sent from my iPhone using Tapatalk Quote
Tony Armour Posted November 7, 2016 Report Posted November 7, 2016 Any updates on folks using the LED's ? Night flight tonight and both of my landing lights are out. Not sure of the last time I confirmed both were working so it is possible they have burnt out. Glad to still have two taxi lights for the landing. Quote
ArtVandelay Posted November 7, 2016 Report Posted November 7, 2016 Better check the switch first.... 1 Quote
Guest Posted November 7, 2016 Report Posted November 7, 2016 On September 21, 2016 at 3:57 PM, carusoam said: Update... two sizes... Big: Par 46... 5.35" (nominal 5 1/2") Small: Par 36... 4.38" (nominal 4 1/2") http://www.whelen.com/install/147/14793.pdf PAR has become synonymous with 'style' they have left the word size hidden somewhere... last page of this doc has the sizes.... http://www.whelen.com/pb/Aviation/Catalog Price Lists and Manuals/Parmetheus Plus Brochure_Email.pdf For some history on the parabolic reflector standard... https://en.m.wikipedia.org/wiki/Parabolic_aluminized_reflector_light Thanks to TJ for describing the relic standard. I completely forgot how that worked... Best regards, -a- I recall that PAR sizing is in 1/8" increments. Clarence Quote
gsxrpilot Posted November 7, 2016 Report Posted November 7, 2016 I installed the PAR 36 lights, a taxi and a landing version, in my K. (Purchased from Lance on Ebay). It gotta say they work GREAT. I don't see any movement on the volts or amp meter turning them on and they are super bright. Just make sure you get the polarity right. Incandescent bulbs don't care, but the LED's do. I guessed on mine and got one of them right. It was a simple fix to switch the wires on the other one and both work great. Quote
Zwaustin Posted November 7, 2016 Report Posted November 7, 2016 I have two of the alphabeam LED's on my K. These are non polarity sensitive. They work well and do not draw much power, also run pretty cool and are bright enough for me. Yes they are more than 60 bucks since made for aircraft . http://www.teledynelighting.com/products/alphabeam.asp Quote
Tony Armour Posted November 10, 2016 Report Posted November 10, 2016 On November 7, 2016 at 4:32 AM, teejayevans said: Better check the switch first.... I have a bad feeling it is not two lights going out in the same time frame. My switch is a split switch so maybe not the switch itself but could be the incoming power to or within the switch. I had been meaning to make the jump to LED's and my delay may have cost me extra trouble. From another flying forum, CSOB lights. Several selections of beam patterns. https://www.larsenlights.com/par-36-45-18-watt-flood-light Quote
M20S Driver Posted November 10, 2016 Author Report Posted November 10, 2016 16 minutes ago, Tony Armour said: I have a bad feeling it is not two lights going out in the same time frame. My switch is a split switch so maybe not the switch itself but could be the incoming power to or within the switch. I had been meaning to make the jump to LED's and my delay may have cost me extra trouble. From another flying forum, CSOB lights. Several selections of beam patterns. https://www.larsenlights.com/par-36-45-18-watt-flood-light Just a point about troubleshooting this if you happened to have the same problem as I had: If you measure the voltage at the switch it may show 24 volts with no current indicating that the right voltage is making it to the switch. I also measured 24 volts at the Taxi light switch but it dropped to .1 volt as soon as the switch was turned on. If the voltage does not drop significantly after the switch is turned on, you may have a different problem. Driver 1 Quote
Tony Armour Posted November 11, 2016 Report Posted November 11, 2016 21 hours ago, M20S Driver said: Just a point about troubleshooting this if you happened to have the same problem as I had: If you measure the voltage at the switch it may show 24 volts with no current indicating that the right voltage is making it to the switch. I also measured 24 volts at the Taxi light switch but it dropped to .1 volt as soon as the switch was turned on. If the voltage does not drop significantly after the switch is turned on, you may have a different problem. Driver Thanks. My serial number is not on the SB.....I know that means nothing LOL Hoping for the best though ! Quote
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