622-6197-002

Flight-data presentation and cockpit role

As an electronic flight display, the EFD 74 converts incoming avionics data into a readable cockpit presentation. Depending on the certified installation, displayed information can include attitude, heading, course guidance, flight-director commands or other navigation references. The unit should not be assigned a universal list of functions from appearance alone because operators may use the same display family with different symbol generators, sensors and display allocations.

The dark screen in the catalog photograph is consistent with an unpowered unit and should not be interpreted as a functional defect. During an approved bench test, the display is evaluated with the correct power, cooling, signal sources and test software. Brightness, geometry, color, line integrity, annunciations and interface response should be checked under the applicable maintenance procedure. A front-panel visual inspection cannot establish the serviceability of internal display electronics.

Identification plate, weight and qualification

The authentic rear photograph clearly identifies TYPE NO. EFD-74 and COLLINS PN 622-6197-002. The same plate lists a weight of 4.5 pounds and includes the original certification and environmental qualification references. These plate markings are the strongest identification evidence for the exact photographed configuration and should be compared with release documentation, serial number and modification status during receiving inspection.

Multiple EFD 74 Part Numbers can exist within the equipment family. Differences may involve hardware standard, interfaces, qualification status, software compatibility or aircraft program requirements. For that reason, a generic EFD 74 description is not sufficient to approve a substitution. Maintenance personnel should match the complete 622-6197-002 number and verify any service bulletins or modification records required by the aircraft documentation.

System integration and maintenance checks

The EFD 74 must be integrated with compatible Collins processing, power and cooling provisions. Nearby equipment can include symbol-generation electronics, attitude or heading references, air-data sources, navigation receivers and cockpit control panels, but the exact composition varies by installation. Related units do not become part of the delivery set unless they are individually listed in the quotation. Connector type, pin assignments and data formats must be taken from the approved interface documentation.

Receiving and installation checks should cover the full Part Number, serial number, connector condition, mounting flange, ventilation openings, screen surface and evidence of unauthorized repair. Bench testing should confirm power-up, built-in test behavior, display stability, brightness control, input processing and absence of intermittent faults. Adequate cooling is important for a deep electronic display enclosure, and blocked ventilation or an incorrect rack installation can reduce reliability.

Overhauled supply and ordering information

This 622-6197-002 EFD 74 is offered in Overhauled condition from partner stock with a six-month warranty. The main photograph retains the authentic unpowered display appearance, while the gallery photograph gives a close view of the exact Collins identification plate, Part Number and connector area. The pictured serial number identifies the reference unit and is not a guarantee of serial-number allocation unless confirmed before shipment.

For an inquiry, specify Part Number 622-6197-002, model EFD 74, aircraft type, EFIS configuration, required modification status, documentation and quantity. Related display, navigation and control equipment can be reviewed in the Garmin / BendixKing / Honeywell / Collins category. Installation eligibility and interchangeability must be established from approved aircraft and Collins technical data before the unit is fitted.