3.10 Example Basic Aircraft Test Operation using the ADTS542F
Preparation for Testing
If unfamiliar with the features and functions of the ADTS542F then it is important for operators to
read and understand the following documents before use:
• Safety and Installation Guide K0554.
• User Manual K0553 (this document).
If the ADTS542F proposed for use has just been delivered, been stored for an extended period or
the operability is unknown for any reason, then perform a standard serviceability test of the ADTS
before use on aircraft. Details of this test can be found in section 6.2.
Familiarise yourself with all aircraft specific test requirement s, personal and aircraft safety
precautions from the manufacturer's Aircraft Maintenance Manual (AMM).
Firstly, consider where to place the ADTS base unit such that it can be safely accessed by the
operator but also has practical routes for piping to the aircraft ports that will not get knocked or
damaged during test operations. This may be either on the hangar/apron floor or a cockpit level
Any difference in height between the ADTS front panel and the aircraft ports must be configured
on the ADTS as an altitude correction (see section 2.6). If working on the aircraft outdoors, the
signal strength of the radio data link to the ADTS Touch will be optimised if the ADTS is placed with
line of sight to the cockpit windows.
Assess the hose lengths that will be required and provision either from the ADTS542F delivery kit or
from local stores. The ADTS542F is supplied with low temperature red and blue flexible hoses at
3m length as standard, but longer hoses may be requested to order. A configurable label kit is
provided so that Ps and Pt channel colour coding may be set in line with regional standards. Both
of the standard hoses come with ready fitted AN4 size fittings suitable for the ADTS Ps and Pt
The other end of each hose is open to allow users to fit hose extensions or other pressure adaptors
The direct connections to the aircraft Pitot and Static ports should be made using the adaptor set
approved in the AMM, or using equivalents supplied by a specialist port adaptor manufacturer.
We do not recommend the use of improvised connections since this can lead to excessive leakage
and potential damage to the aircraft avionics systems.
When all the required pipework has been connected, the ADTS should be turned on as soon as
possible to allow a few minutes for it to reach a stable operating temperature. This is a safe action
for the aircraft regardless of whether the ADTS Touch is connected or not at this time. No changes
in pressure will be applied to the aircraft until actively requested. Make the ADTS Touch data
connection to the ADTS, either by Bluetooth® data connection or cable (see section 3.2).
ADTS542F/552F/553F/554F User Manual
K0553 Revision C