B80028/NSB MB800-28V ILL BUTT NV

Specifications

• Universal Time: 24 hour format.
• Local Time: 12 hour or 24 hour format.
• Elapsed Time Count Up: Starts in minutes, seconds, then hours, minutes up to 99:59 hours.
• Elapsed Time Alarm: Activates at zero when counting down.
• Internal Lighting: 230 mA at 5V, 120mA at 14V, 50mA at 28V (Specify voltage when ordering).
• Keep Alive Current: .004 Amps. 14V to 24V.
• Voltage: 12V to 30V.
• Crystal Reference: -40C to +60C .001%
• Warranty: 1 year.
• Option: AA Memory Battery (Specify when ordering).
• 5 volt and 28 volt lighting units need at least 20 volts on main power input for clock to operate. For 14 volt systems, order a clock with 14 volt lighting.

FAA Approval

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.

Download Letter

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 Approvals

Beech Models 35, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, 35-33, and 35-A33

Diamond Aircraft Model DA20-A1

Download FAA 337 Form