REVUE THOMMEN AG
CH-4437 Waldenburg
AD20 Standby Altimeter
Page 10 of 72
07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6
1 Section I
1.1 Introduction
1.1.1 Purpose of the manual
This manual provides the specifications, installation instructions, equipment operation and system
maintenance in details for the REVUE THOMMEN AD20 Standby Altimeter. This manual also defines
interface design requirements including mechanical and electrical characteristics for the AD20
Standby Altimeter.
The description and procedures are covered in different topics as shown in the Table of Contents,
and the troubleshooting procedures are given under sections to identify the fault and failure
conditions of the unit with the interface systems.
The procedures in this manual are to be performed by qualified personnel familiar with REVUE
THOMMEN AD20 Standby Altimeter Equipment.
Note 1 : This manual is applicable for all Solid State Flight Instruments Family with part number as
AD20.().
1.1.2 Equipment Specification
1.1.2.1 Applicable Documents
The following table shows the list of relevant applicable documents which forms the basis of
approvals of the REVUE THOMMEN AD20 Standby Altimeter.
Certification Standards
Identifier Document Title Issue / Date
FAR 23 Airworthiness Standards: Normal, Utility, Acrobatic, and
Commuter Category Airplanes
1 Feb. 2001
CS-23 Normal, Utility, Aerobatic, and Commuter Category
Airplanes
14/11/2003
AC 23.1309-1C Equipment, Systems, and Installations in Part 23 Airplanes 12/03/99
FAR 25 Airworthiness Standards: Transport Category Airplanes 9/14/2000
CS 25 Certification Specifications for Large Airplanes 17/10/2003
FAR 25.1333 Instrument systems
AC 25-11 Transport Category Airplane Electronic Display Systems 16/07/87
AMJ 25-11 Transport Category Airplane Electronic Display Systems 27 May 1994
AMJ 25.1309 System Design and Analysis 11/05/90
FAR 27 Airworthiness Standards: Normal Category Rotorcraft Jan. 21, 2000
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