integrated Secondary Flight Display (iSFD)
Description
The Meggitt Avionics’ integrated Secondary Flight Display
(iSFD) provides the best solution for standby flight
information - attitude, altitude and airspeed; replacing two or
three electro-mechanical cockpit standby instruments with a
single 3ATI display unit.
Features
 All solid state design requiring 28 VDC only
 LED backlit, color AMLCD display
 High resolution display (300 x 300 pixels)
 Large useable screen area, fully anti-aliased
The iSFD is a 3ATI cockpit instrument with a high resolution,
color active matrix liquid crystal display (AMLCD), with new
LED backlight and compatible with the latest AMLCD
primary flight displays.
 Color and formats closely matched to primary displays
(2.5million colors)
Within the iSFD, solid state sensors and a microprocessor
system measure aircraft pitch and bank attitudes and air
data.
 Various display options, including magnetic heading
If measured air data is available from an aircraft multifunction probe (MFP) or air data computer (ADC), then the
iSFD will receive and process the available digital air data.
 Static source error correction (SSEC) option
If digital magnetic heading data is available e.g. from a
Meggitt Avionics Magnetic Heading Sensor (MHS), then the
iSFD will also display aircraft magnetic heading.
 Mounting by standard 3ATI instrument panel clamp or flange
bolts
 Instrument landing system (ILS) deviations can be displayed
(glideslope, localizer and backcourse)
 Extensive built in test (BIT)
 Brightness control matched to primary displays
 Excellent reliability
 Strong attitude performance using proven robust algorithms
 Accurate and stable air data performance supports RVSM
compliance
 Passive cooling – no internal fans
Operation
Application of power to the iSFD initiates the attitude alignment
process (60 seconds). Barometric pressure is adjusted using
the bezel-mounted rotary knob, which if pressed selects
“Standard” barometric pressure. Pressing the HP/IN button
selects hectapascals or inches of mercury for barometric
pressure units.
Operation (continued)
iSFD Applications
The display provides warning of Vmo and Mmo (or Vne)
using a red thermometer-style display an by changing the
appropriate digits to red.
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At large pitch angles, some ground (for pitch up) or sky
(pitch down) remains visible to provide a ready reference for
aircraft attitude. Red warning chevrons appear at pitch
angles of forty five degrees.
The display is carefully configured to optimize the formats
and match with the primary displays so that pilot workload is
reduced when using this system to fly the aircraft.
commercial transport, fixed wing
commercial rotary wing
military transport, fixed or variable wing
military rotary wing
iSFD Benefits
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designed for digital air data interface
pitot-static pressure input option
highly efficient LED backlight
no ITAR components
future-proofing for long service life
service-proven robust attitude algorithms
short length, low weight and low power
Specification
Size
3ATI x 8 inches (204 mm) long
Weight
4 lbs (1.81 kg)
28 VDC
14W normal operating, 22W cold start (150 foot lamberts
display luminance)
18 W normal operating, 26 W cold start (300 foot lamberts
display luminance)
Power
Aircraft system interface
ARINC-429, MIL-STD-1553B
Mounting
Standard 3ATI instrument clamp or flange bolt mounting
Display
Active area
Resolution
2.4 x 2.4 inches (61 x 61mm)
300 x 300 pixels
Environmental
Operating temperature
Storage temperature
-40° C - +70° C
-55° C - +95° C
Standards
Environmental
Hardware
Software
TSOs
Specification subject to change.
© Copyright Meggitt Avionics 2008
RTCA/DO-160E
DO-254 Level B
RTCA/DO-178B Level B
C106, C3d, C4c, C6d, C113
Meggitt Avionics
7 Whittle Avenue
Segensworth West
Fareham
Hants
PO15 5SH
UK
Tel: +44 (0) 1489 483300
Fax: +44 (0) 1489 483340
www.meggitt-avionics.co.uk
www.meggitt.com