Part #: 622-4938-001

Model: RMI-30

NSN:

5826-01-296-3914

OEM:

Collins Aerospace

Desc:

Radio Magnetic Indicator

Part Number :


RMI-30
FEATURES
  • Provides aircraft heading information on a calibrated servo-driven compass card read against a fixed lubber line
  • Heading flag monitors servo error, compass valid, and instrument power
  • Normally used with VIR-30/32 Navigation Receivers or ADF-60 ADF System
  • Models available with 5 or 28 Volt, Blue-White Lighting (see table below)
  • Models available with black or gray color bezel (see table below)
  • Models available for rear mount applications (see table below)
SPECIFICATIONS
FAA TSO: C6c Environmental: RTCA DO-138
Dimensions: 3.375"H x 3.375"W x 7.310"L Weight: 2.6 lbs.
Altitude: 15000 ft. max. Temperature: -15 to +55C (operation)
Pointer 1 Color: Day-Glo yellow (-001 thru -007 units) White (-021 thru -027 units) Pointer 2 Color: Day-Glo green (-001 thru -007 units) White (-021 thru -027 units)
HDG flag Color: Day-Glo rocket red Lubber line Color: Day-Glo arc yellow
Numerals Color: White Background Color: Black
Bearing Pointers Positioning Accuracy: Less than +-2.0 degrees Bearing Pointers Sensitivity: Better than +-0.5 degrees
Bearing Pointers Dead Zone: Less than 1.0 degree Bearing Pointers Response: Greater than 180 degree per second undamped
VOR 1/2 Positioning Accuracy: Within +-2.0 degrees (w/ square wave input) VOR 1/2 Sensitivity: Better than +-0.5 degree
VOR 1/2 Dead Zone: Less than 1.0 degree VOR 1/2 Response: Greater than 180 degrees per second undamped
Heading Display Interface: Signal: 3-wire synchro. References: 2 wire Heading Display Positioning Accuracy: Within 1.0 deg.
Compass Card Sensitivity: Better than +-0.1 deg Compass Card Dead Zone: Less than 0.2 degree
Part NumberRadio Magnetic Indicator Description:
622-4938-001 Black Bezel, 28V lighting
622-4938-002 Black Bezel, 5V lighting
622-4938-003 Gray Bezel, 28V lighting
622-4938-004 Gray Bezel, 5V lighting
622-4938-005 Special Gray Bezel for rear mount applications, 5V lighting
622-4938-006 Special Gray Bezel for rear mount applications, 5V lighting
622-4938-007 Black Bezel, 28V lighting, NAV indication instead of VOR
622-4938-021 Black Bezel, 28V lighting
622-4938-022 Black Bezel, 5V lighting
622-4938-023 Gray Bezel, 28V lighting
622-4938-024 Gray Bezel, 5V lighting
622-4938-025 Special Gray Bezel for rear mount applications, 5V lighting
622-4938-026 Special Gray Bezel for rear mount applications, 5V lighting
622-4938-027 Black Bezel, 28V lighting


PLEASE NOTE:
THE ABOVE LISTED PART NUMBERS REFLECT THE DIFFERENT UNITS ORIGINALLY AVAILABLE BY THE MANUFACTURER AND DO NOT NECESSARILY INDICATE OR REFLECT THE CURRENT AVAILBILITY OF THESE DIFFERENT UNITS BY SOUTHEAST AEROSPACE OR THE AFTERMARKET

 

622-4938-007
- Radio Magnetic Indicator

NSN: 5826-01-370-9328

Price Condition Status
$795.00 OH OUTRIGHT 2 IN STOCK
622-4938-001
- Radio Magnetic Indicator

NSN: 5826-01-296-3914

Price Condition Status
REQUEST OH OUTRIGHT REQUEST LEAD TIME
622-4938-002
- Radio Magnetic Indicator
Price Condition Status
REQUEST OH OUTRIGHT REQUEST LEAD TIME
622-4938-003
- Radio Magnetic Indicator
Price Condition Status
RFQ RFQ RFQ
622-4938-004
- Radio Magnetic Indicator
Price Condition Status
REQUEST SV OUTRIGHT REQUEST LEAD TIME

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact questions@seaerospace.com


In relation to NE (New) parts, many OEMs change their prices and availability without any notice to dealers or the industry. Therefore, through the REQUEST or RFQ indication, we ask that customers contact us for the most accurate price and availability.

In relation to SV & OH parts, the used parts aftermarket in the aviation industry is not an infinite supply. It is a dynamic, constantly changing market that is significantly affected by and susceptible to highs and lows in supply and demand. Therefore, although we attempt to, at times, we are unable to predict the exact moment when an item may be available. Once again, through the REQUEST or RFQ indication on our website, we ask that customers contact us for the most current and accurate price and availability.

The use of a Radio Magnetic Indicator in an aircraft offers several benefits that improve navigation situational awareness and pilot workload.

A very basic ADF indicator without a moveable compass card simply points to a selected beacon. The pilot must calculate the bearing needed based on the aircraft's current heading. Most if not all ADF indicators without a knob to turn the compass ca rd are very old and obsolete.

Most ADF indicators include a knob to turn the present heading so that the bearing to the beacon can be read against the compass card.
 

 


The RMI provides all of the ADF indicator functions with automatic rotation of the compass card via the aircraft's compass system. Therefore, whenever the aircraft turns then the compass card will turn.

An RMI always automatically points to the bearing to a beacon. This is a more logical form of indication even over VOR type of navigation since there is no OBS, To-From, radials, etc.

 

 

 

 


More advanced RMI indicators offer even more flexibility and features by offering dual needle for ADF and VOR bearing and multiple ADF/VOR navigation.

 

 

 

 

 

 

 

Negotiating the exchange price of a unit only limits the allowable repair cap for the core unit. Southeast Aerospace's exchange transactions are based on the return of economically repairable core unit. Once the core is received and evaluated, the core repair cost incurred by SEA cannot exceed 75% of the original exchange price. That is, it cannot cost SEA more than 75% of the original OH/SV exchange price collected from the customer. Therefore, when and if an SEA exchange price is discounted, there is a risk that additional charges may be assessed once the core is returned and evaluated.