Davtron Inc has determined that installation of all Davtron products are considered minor according to (FAR) 21.93(a). All of our units are similar in design, with their electrical, mounting size, and weight being similar. Even though we consider installation of Davtron products to be minor, it is up to the installing mechanic to determine if the installation is minor or major. For a minor, a maintenance log book entry is all that is required. The FAA has determined that the installation of replacement clocks in non-transport category airplanes is considered to be minor, therefore only a maintenance log book entry is required referencing letter 100S-GA-10-53 from the FAA. Letter 100S-GA-10-53 For a major installation on a non PMA approved airframe, a FAA 337 form should be filed with your local FSDO and a possible field approval done. FAA PMA# PQ1062NM (View a sample 337 form)Davtron Inc. recommends that you purchase our products through your local avionics shop and have them do your installation. They know how to handle all the log book entries you need for FAA approval.
Great little clock/timer that does everything I need for my Grumman Tiger. Nice look, easy to set and use, nice display both day and night. Quick install that took about 1 hour. Quick access to Zulu time is a bonus.
January 27, 2019
It works great and is easy to use.
September 27, 2017
I installed on of these clocks in my Scheibe SF25C motor glider two years ago.
It has worked very well.
Easy to setup and use
February 27, 2017
It worked for a few years, but now it is failing. The legs of one or two of the LEDs are inop and the local time feature is not settable. It goes through the motions to set local time but then returns to some other value upon leaving the routine.
September 13, 2015
Q: Are Davtron clocks stamped with TSO? Specifically part numbers 10-24545-14 and 10-02050.
No, these clocks are PMA'd but not TSO'd.
Q: This Davtron model 800 digital clock is PMAd but the FAA approval cert tab only shows for Diamond and Beech. Is it certified as well (under PMA) for install on a Cessna 172M?
The FAA has determined that the installation of replacement clocks is considered to be minor, therefore only a log book entry is required referencing letter 100s-ga-10-53 from the FAA.
Q: Is the P/N: 10-03323 - 10-03335 with lighting and what is the difference between this two models?
Part #10-03323 is the 5V standard lighting (orange) configuration.
Part #10-03335 is 28V Night Vision Goggle compatible lighting (green).