Avionics Manuals,Collins,Collins FIS, EFIS Series,Aircraft Manuals. Collins FIS-84 Flight Instrument System Pilot's Guide 1979 (part# 5-001117). COLLINS DPU-84 622-9682-002 Part # 622-9682-002 Alternate Part # DPU-84. In-house Repair Capabilities. No Availability. In-stock List Price Range. Collins FIS-84 Flight Instrument System Pilot's Guide 1979 (part# 5-001117) Avionics Manuals: Collins: Collins FIS, EFIS Series Part No.: 5-001117.

• Electronic display unit used to depict navigation and attitude information in EFIS-84 System
• Used in conjunction with DSP-84 Display Select Panel and DPU-84 Display Processor Unit
• Mulitcolor CRT display
• Will display additional information such as weather radar, navaid/waypoint locations, FCS mode annunciation, and diagnostic messages
• As EADI (Electronic Attitude Director Indicator), EFD will display aircraft pitch and roll attitude, autopilot mode annunciations, vertical deviation, lateral deviation, autopilot engage status, attitude/heading comparator warings, and decision heights
• Other displays as function of pilot selection or operation mode include attitude source, radio altitude, excessive ILS deviation and comparator warning, fast/slow deviation or angle-of-attack deviation, and marker beacon
• Interconnect strapping enables more display options such as crosspointer or command bars, speed deviation display inhibit, enable or inhibit rising runway, and enable or inhibit composite format in reversion
• As EHSI (Electronic Horizontal Sitaution Indicator), EFD will display compass heading and sensor type annunciation, selected heading, primary VOR/LOC course arrow or LNAV desired track, and navigation sensor annunciation for primary course
• Displays lateral deviation from selected course including annunciation of type, to/from information, distance to station/waypoint, bearing pointer sensor annunciations, vertical deviation, NAV data display of ground speed, wind, time-to-go or elapsed time, preselected course arrow, digital selected course/desired track readout, weather radar target alert, DR, MSG, and waypoint alert when LNAV selected as active course, excessive ILS deviation, ILS and heading comparator warnings, alternate heading annunciation, back course annunciation, and DME hold annunciation

• Provides high temperature warning output that can drive external annunciator
• Various bezel trim rings and colors available (see table below)

February 2010

For several years, I have been asked to write proposals for the replacement of the existing Collins EFIS MFD-85(x) in various King Air 200 and 300 models. The MFD-85(x) was one of the first MFDs in widespread use and was a very nice feature back in its day. Today, the limitations, features and capabilities of the MFD-85(x) and the entire EFIS-85 system are eclipsed by the modern flat-panel MFDs available for Part 23 aircraft.

When you are considering upgrading the MFD to a later model, keep in mind the effect that modification will have on the aircraft’s type certification. King Airs with left-hand or right-hand EFIS-85 integrated with the MFD-85(x), were designed to use MFD-85(x) for the 'Reversion' capabilities built into the system. There are potentially severe consequences for removing that MFD.

For example, if the King Air loses the left-hand DPU (Display Processor Unit) and the left-hand EFIS goes black, the system is designed so that the information feeding the failed left-hand EFIS system is also feeding the MPU (Multifunction Display Processor) and that information can be displayed on the MFD-85(x).

Collins Efis 84 Manual -

Removal and retrofit of the MFD-85(x) with any of the modern displays will take that 'Reversionary' function away, rendering the aircraft not in compliance with its original design and type-certification.

Collins Efis 84 Manual

I have seen retrofits of this type performed and Field-Approved by a local FAA Inspector and the customer walks away thinking he is perfectly legal to operate the aircraft in this manner. It is not until he goes to sell the aircraft or place it on a 135 certificate that a savvy Chief Inspector or FAA Inspector finds that the aircraft is not operating in accordance with the Airplane Flight Manual Supplement (AFMS) for the Collins EFIS-85, which was inserted in the Flight Manual by the Beechcraft when the airplane left the factory. Now the trouble begins.

Collins Efis 84 Manual 2020

The bottom line is, when considering an upgrade to the MFD and your King Air has a Collins MFD-85(x), make sure there is either an STC for the installation or the existing EFIS-85 AFMS will allow for the removal of the MFD-85(x).