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Panel Design

I have settled on a design after giving some consideration to what are my actual requirements. Here is a summary of them.
 
    Requirements:
  • Primary flight display on pilot Center of View (COV).
  • Secondary flight display adjacent to primary.
  • Back up flight insturments grouped together.
  • Radio stack right of Center of Panel (COP). Just like most Piper and Cessna airplanes.
  • Ignition switch on left side to keep right hand free during engine start
  • Switches logically grouped rather than spread across bottom of panel.
 
Note: COV is located 1.125" inboard of the left panel rib.
 

Avionics Trade Study
At this point I have already settled on the GRT EFIS and engine monitor.  This trade study is to configure the Nav and Com radios.

    Requirements
  1. Approach GPS.  Internal procedures from database.
  2. ILS receiver
  3. COM1 and COM2 capability
  4. Back up Nav if primary fails.
  5. If any one radio goes belly up, I still want alternate Nav and Comm.
    Options
  1. GRT EFIS, GNS-430W, SL-30
  2. GRT EFIS, GNS-430W, SL-40
  3. GRT EFIS, GRT GPS RAIM, GNS-430W, SL-40
  4. Chelton EFIS, SL-30, SL-40
  5. GRT EFIS, GNC-300X, MD-41, SL-30
    Equipment Pricing (2009)
  • GNC-420W - WAAS, Com $6,900 (Saves $1400 over 430W but then need to spend $2.2k more on SL-30 for ILS capability.
  • GNS-430W - WAAS, ILS Nav, Com $8,300
  • SL-30 - ILS Nav/Com  $3,800  ($2,200 for ILS capability)
  • SL-40 - Com  $1,600
  • GNC-300XL IFR GPS/Com  $3,150 + MD-41 annunciator $900.  Has ARINC-429 and RS-232 interface.
  • GPS-400W - Same GPS as 430W but without nav and com.

Requirements Analysis

Options

Approach GPS

ILS

Com1/Com2

Back-up Nav

Cost

GRT EFIS
GNS-430W
SL-30

GNS-430W

GNS-430W
SL-30

GNS-430W
SL-30

Yes

$23,100

GRT EFIS
GNS-430W
SL-40

GNS-430W

GNS-430W

GNS-430W
SL-40

No

Discard this option

GRT EFIS
GRT GPS RAIM
GNS-430W
SL-40

GNS-430W

GNS-430W

GNS-430W
SL-40

Yes

$21,650
baseline

Chelton EFIS
SL-30
SL-40

Chelton EFIS

SL-30

SL-30
SL-40

Yes

$30,300

GRT EFIS
GNC-300XL
MD-41
SL-30

GNC-300XL

SL-30

GNC-300XL
SL-30

Yes

$18,850

 

Antennas

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Last update 15Aug09