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Home / Instruments / UMA / Probes & Senders /UMA Sending Units For Tachometers FAA TSO
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UMA Sending Units For Tachometers FAA TSO

7 Reviews 7 Answered Questions
From $127.80 to $149.75
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Description Part No. Price Buy
UMA Sending Unit 1A3-4 Only
10-01706
$149.75
Quantity
UMA Sending Unit T1A9 Only, for Slick Mag
10-02432
$127.80
Quantity
UMA Sending Unit T1A9 Only, for Bendix
10-02433
$127.80
Quantity
Subtotal $0.00
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Overview

1A3-4
UMA Sending Unit
Includes: Sending Unit, and .156 dia. tang adapter.
Dimensions: 4.5" overall length,
1.3" max. diameter.

T1A9
UMA Sending Unit
Magnetic pickup for Slick or Bendix Magnetos
(6 ft. cable lengths)

Reviews

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I replaced an Advanced Flight Systems unit with the UMA model and it worked with no changes to my EFIS settings. A word of caution...it was not easy to install in my Vans RV7A with an IO 360 engine. Needed to remove oil filter and disconnect one oil line to have access...then threading it into place was a two finger effort.

Robert C Verified Purchase

UMA TACH PICKUP FOR SLICK MAG 6 LEAD
September 23, 2022

Worked great with my bendix mags and AFSs 5600 EFIS with their internal EMS board.

Ben W Verified Purchase

UMA TACH PICK UP FOR BENDIX MAG 6 LEAD
December 15, 2021

Plugged it in, wired to Dynon D-180. Started it up and like magic, it gave me perfect RPM reading. Very well made, and of high quality. Couldnt be happier. Well done.

Martin P
February 18, 2021

Excellent service: delivered the right item expeditiously

Graeme R
January 17, 2021

This item is working perfectly with my Dynon 180Flightdeck.

Robert S
April 14, 2020

Works on my G1 Cirrus and many hundred $ cheaper.

John R
November 18, 2018

Awesome!! Tried to get my dynon to pick up my magneto RPM on my 540. Didn’t work so I bought a set of these. Worked great. Easy install and rock solid RPM.

Robert S
March 23, 2018

Q&A

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Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does part# 10-01706 come with wiring harness and/or connector?

Part # 10-01706 is only the sending unit.

Q: What is the weight of the T1A9 sensor?

Approx 0.13 lbs.

Q: Is this unit 1A3-4 FAA approved?

These units are FAA TSO approved.

Q: Does the pick up listed for Bendix work on both dual and single Bendix mag?

This will work on single magneto only.

Q: Will the T1A9 work with the JPI EDM 350?

JPI recommends JPI probes for the EDM systems.

Q: Can the T1A9 be used on a pressurized slick mag? (#6320)

For the slick mag please view p/n: 10-02432.

Q: Will it accept input from an Emag or Pmag?

Per manufacturer: 1A3-4 is tach sending unit and it cannot accept anything, it is giving out 2 pulse per rev square wave signal for tach.

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