Found this Narco AR-850 Encoder sitting on the shelf today! A couple years back this Narco AR-850 Altitude Encoder Failed (Stopped reporting Altitude) on My Cessna 150.
If anyone has any info on this unit please post would love to diagnose and repair it! I did find the Narco Patent Info rater limited info.
My little point and shoot cam sucks! I know but have not seen any info on these on the net so said why not!
Narco AR-850 Altitude Encoder
Narco AR-850 Altitude Encoder Side Profile…
Narco AR-850 Guts (Little Plug for Snap-on haha)
Narco AR-850 PCB Bottom, Lots of flux! (They Need to learn to clean the board!)
Narco AR-850 PCB Front, Lots of flux!
Narco AR-850 PCB 1 Caps are RMRM Brand no telling who that is!
Narco AR-850 PCB Side Profile
Narco AR-850 Heater or temp sensor is what Usually Fails from what I Here from avionics tech’s. The ELSEN WA098 POCU97C temp sensor is on the bottom of the pressure sensor there is another part in the pressure sensor housing from the patent it should be a MPX100A will disassemble and see what it really is.
Narco AR-850 Chips, As soon as I find the box I have my Xeltek Programmer in I will dump the 2716 eprom.
Last Updated on May 15, 2020 by Steven Rhine