Digital Air Data Display AD32

with integrated Digital Air Data Computer

The AD32 Digital Air Data Display combines an air data computer with a digital altimeter in a 3ATI form factor. This makes the THOMMEN AD32 Air Data Display ideally suited for replacing standby altimeters in fixed wing & rotorcraft while minimizing installation efforts.

The AD32 measures pitot and static pressure using Vibrating Cylinder Technology (VCT) sensors. These sensors are highly accurate and stable making our AD32 virtually drift-free, effectively eliminating calibration and exceeding FAA Technical Standard Order (TSO) accuracy requirements.

The AD32 Digital Air Data Display can be equipped for RVSM and/or NVIS compatibility to suit aircraft system requirements. Additional options allow the pilot to switch between metric and imperial altitude information.

Corrected altitude is displayed on a high contrast LCD in both digital and analog format. With a fast reacting stepper-motor driven pointer, the AD32 enables virtually “real-time” indication of the altitude during rapid vertical maneuvers.

The AD32 communicates via its ARINC429 interface. Data in-/output can be configured per requirements while keeping non-recurrent costs at a minimum. The extensive Built-In-Test system and rugged design guarantees safe operation.

With flexible configurability the AD32 is capable of supplying altitude pre-select, baro correction, discrete word output and more to next generation equipment with minimum alteration to the aircraft’s system architecture.

THOMMEN’s AD32 meets the requirements for multiple platforms and works in conjunction with TAWS, ACAS/TCAS, EGPWS, FMS systems, and ADS-B transponders. This unique air data computer & altimeter unit is suitable for most aircraft modernization and upgrade programs. Up to 2 x 16 SSEC curves are possible.

The AD32 Air Data Display is also available as ARINC408 or 3ATI form fit. ICAO encoded altitude output, AOA sensor input, and an RVSM version are optionally available as well as a variety of pneumatic adapters and installation kits.

Customers trust in our Digital Air Data Display AD32 for it’s unbeatable quality.

 

Air Data Display AD32 – 8 good reasons to choose

  • INTEGRATED DESIGN

Digital air data computer incorporated into electronic encoding CDP altimeter with altitude alerter

  • COMPLIANCE WITH HIGHEST CERTIFICATION STANDARDS

TSO-C106 (air data computer) / TSO-C10b (altimeter) / TSO-C88a (altitude encoder) / DO-160D / DO-178B Level A

  • EASY INSTALLATION

Several case design options (ARINC408, 3 ATI), rugged design, variety of pneumatic adapters and installation kits

  • PERFECT AVIONICS SYSTEM INTEGRATION

Extensive computation of flight relevant data provided per configurable ARINC429 and analogue in-/outputs

  • INTEGRATION INTO COCKPIT LIGHTING SCHEME

5V or 28V, white/red/NVIS green, customizable dimming curve

  • HIGHEST ACCURACY

Optionally RVSM compliant, max scale error below FL200: 10ft (3m)

  • SUPPORTING SPECIAL OPERATIONS

Baro setting 700 – 1050mbar, Baro push-to-reset, configurable altitude alerter, optionally NVIS compliant

  • MINIMUM TOTAL COST OF OWNERSHIP

No re-calibration required, 21’000 hrs MTBF

PARAMETERS

Pressure Altitude
- 1,000 to +53,000 feet
Baro Corrected Altitude
- 1,000 to +53,000 feet
Vertical Speed
0 to 20,000 ft/min.
Indicated Airspeed IAS
0/40 to 450 knots
Computed Airspeed CAS
0/40 to 450 knots
True Airspeed TAS
0/100 to 599 knots
Max. Allowable Airspeed VMO
150 to 450 knots
MACH Number
0.200 to 0.999 MACH
Total Air Temperature
-60 to + 99 °C
Static Air Temperature SAT
-99 to +60 °C
Baro Setting QNH
20.67 to 31.00 inHg
700 to 1,050 mbar

CHARACTERISTICS / FEATURES

Solid State Pressure Sensors
RVSM Compliant
Static Source Error Correction, 2 x 16 Curves
Integrated Altitude Alerter (Optional)
Standby/Normal Operation (Optional)
English/metric scale setting
Baro Push-to-Reset function
Push-to-Test and continuous Built-In-Test
BIT Failure memory
Display with LCD/stepper motor driven pointer
ARINC 408, 3ATI, with IMI ring pointers
RS232 Maintenance Interface

SIGNAL INPUTS

Primary Power 28 VDC
Emergency Power 28 VDC
Lighting Power 28 VDC (Optional 5 VDC)
Alert Lamp Power 28 VDC (Optional 5 VDC)
ARINC 429 Serial Data Bus 2 Receive Channels
TAT Probe 500 Ohm (Optional 50 Ohm) @ 0°C

SIGNAL OUTPUTS

Encoded Altitude ICAO Per TSO C-88a
Visual/Aural Alert Relais Outputs
Warning Flag Valid GND/28 VDC
Optional Baro Potentiometer Output
ARINC 429 Serial Data Bus 2 Transmit Channels

OPERATING SPECIFICATIONS

Altitude Scale Error
- 1,000 to 20,000 feet ± 10 feet
20,000 to 29,000 feet ± 20 feet
29,000 to 41,000 feet ± 30 feet
41,000 to 53,000 feet ± 50 feet
FAA TSO-C10b/TSO-C88a/TSO-C106
RTCA/DO-178B Level A
RTCA/DO-160D
– Operating Temperature -20 (-30 optional) ... 70 °C
– Storage Temperature -55 ... 85 °C
Reliability: MTBF 21,700 Hours
(Acc. MIL-HDBK-217F)
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THOMMEN Air Data STCs

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