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Standard

Temperature Instruments (Reciprocating Engine Powered Aircraft)
2008-02-16
CURRENT
AS413B
This Aerospace Standard covers two basic types of temperature instruments as follows: TYPE I: Ratiometer type, actuated by changes in electrical resistance of a temperature sensing electrical resistance element; the resistance changes being obtained by temperature changes of the temperature sensing resistance element. TYPE II: Millivoltmeter type, operated and actuated by varying E.M.F. output of a thermocouple; the varying E.M.F. input to the instrument being obtained by temperature changes of the temperature sensing thermocouple.
Standard

TEMPERATURE INDICATOR
1954-12-01
HISTORICAL
AS413A
This Aeronautical Standard covers two basic types of temperature indicators as follows: TYPE I - Ratiometer type actuated by changes of electrical resistance of a temperature sensing electrical resistance element; the resistance changes being obtained by temperature changes of the temperature sensing resistance element. TYPE II - Millivoltmeter type, operated and actuated by varying e.m.f. output of a thermocouple, the varying e.m.f. input to the instrument being obtained by temperature changes of the temperature sensing thermocouple.
Standard

TEMPERATURE INSTRUMENTS (TURBINE POWERED SUBSONIC AIRCRAFT)
2008-02-16
CURRENT
AS414B
This SAE Aerospace Standard (AS) covers two basic types of temperature instruments as follows: Type I: Ratiometer type, actuated by changes in electrical resistance of a temperature sensing electrical resistance element; the resistance changes being obtained by temperature changes of the temperature sensing resistance element. Type II: Millivoltmeter type, operated and actuated by varying EMF output of a thermocouple; the varying EMF input to the instrument being obtained by temperature changes of the temperature sensing thermocouple.
Standard

AIR DATA COMPUTER
1965-02-01
HISTORICAL
AS417
This Aerospace Standard covers an air data computer characterized by the concept of transducing and computing the majority of air data requirements for an aircraft. The display instruments and other using subsystems are not considered in this scope except where they perform computing operations for output parameters as covered by this specification. The computer may accept the inputs and provide the outputs listed in paragraphs 2.1 and 2.2 respectively. The computer may also provide an altitude encoder output for IFF Mark X ¯ ¯ (SIF)/Air Traffic Control Radar Beacon System SIF/ATCRBS; in which case AS 855* "Altitude Device Providing Outputs for Automatic Pressure Altitude Reporting" shall be referred to for applicable minimum standards. (Note - Reference to air data computer in subsequent paragraphs will be designated as "instrument".)
Standard

Air Data Computers, MPS
2008-02-16
CURRENT
AS417A
This Standard covers air data equipment (hereinafter designated the instrument) which when connected to sources of aircraft electrical power, static pressure, total pressure and outside air temperature (singly or in combination) provides some or all of the following computed air data output signals: Pressure Altitude* Total Temperature* Pressure Altitude (Reporting) Altitude Rate Baro-Corrected Pressure Altitude* Overspeed Warning Vertical Speed* Altitude Hold Computed Airspeed* Airspeed Hold Mach Number* Mach Hold Maximum Allowable Airspeed* qc (impact pressure) Static Air Temperature (*when used as an alternate for total temperature) True Airspeed Others
Standard

TEMPERATURE INDICATOR
1948-11-01
HISTORICAL
AS413
This specification covers two types of instruments. These instruments are for the purpose of measuring temperature, such as those of oil coolant, carburetor air, free air and cylinder head.
Standard

Automatic Pilot Installations
2008-02-16
HISTORICAL
ARP419A
These recommendations cover the mechanical and electrical installation and installation test procedures for automatic pilots of the type normally used in transport type aircraft. The material in this ARP does not supercede any airworthiness requirement in the Civil Air Regulations.
Standard

AUTOMATIC PILOT INSTALLATIONS
1991-05-01
HISTORICAL
ARP419
These recommendations cover the mechanical and electrical installation and installation test procedures for automatic pilots of the type normally used in transport type aircraft. The material in this ARP does not supercede any airworthiness requirement in the Civil Air Regulations.
Standard

Automatic Pilot Installations
2020-04-14
CURRENT
ARP419B
These recommendations cover the mechanical and electrical installation and installation test procedures for automatic pilots of the type normally used in transport type aircraft. The material in this ARP does not supercede any airworthiness requirement in the Civil Air Regulations.
Standard

Automatic Pilots (Turbine Powered Subsonic Aircraft)
2020-12-22
CURRENT
AS440B
This SAE Aerospace Standard (AS) covers automatic pilots intended for use on aircraft to automatically operate the primary and trim aerodynamic controls to maintain stable flight and/or to provide maneuvering about any of the three axes through servo control. Automatic control functions essential for primary or augmented flight control are excluded.
Standard

AUTOMATIC PILOTS (Turbine Powered Subsonic Aircraft)
1996-09-01
HISTORICAL
AS440A
This SAE Aerospace Standard (AS) covers automatic pilots intended for use on aircraft to automatically operate the primary and trim aerodynamic controls to maintain stable flight and/or to provide maneuvering about any of the three axes through servo control. Automatic control functions essential for primary or augmented flight control are excluded.
Standard

AUTOMATIC PILOTS (Turbine Powered Subsonic Aircraft)
1963-02-01
HISTORICAL
AS440
This Aerospace Standard covers Automatic Pilots intended for use on aircraft to automatically operate the primary and trim aerodynamic controls to maintain stable flight and/or to provide maneuvering about any of the three axes through servo control. Automatic control functions essential for primary or augmented flight control are excluded.
Standard

Single-Degree-of-Freedom Spring-Restrained Rate Gyros
2008-02-16
CURRENT
AS1104
This specification covers that gyroscopic instrument normally defined as a "subminiature rate gyro." The rate gyro, when subjected to an angular rate about its input axis, provides an AC output voltage proportional to the angular rate. The subminiature size category generally includes gyro instruments of one (1) inch diameter or less and three and one-half (3 1/2) inches length or less. This specification defines the requirements for a subminiature spring-restrained, single-degree-of-freedom rate gyro for aircraft, missile, and spacecraft applications.
Standard

Remote Servoed Air Data Instruments for Subsonic Aircraft
2008-02-16
CURRENT
AS791
This standard provides minimum performance criteria for air data instruments intended to provide cockpit indication of: a Indicated airspeed (Vi) b Computer airspeed (Vc) c True airspeed (Vt) d Equivalent airspeed (Ve) e Mach number (M) f Altitude (H) g Vertical speed (Hpr) h Maximum operating limit speed (Vmo) i True angle of attack (αt) j Free air temperature (Tfat) k Total temperature (Tt) These functions shall be derived from a central air data computer (AS 417) and through system wiring applied to the respective indicator.
Standard

BAROMETRY FOR ALTIMETER CALIBRATION
1984-10-01
HISTORICAL
AIR1075
This AIR is concerned only with aspects directly relating to available accuracy. While well-designed photoelectric, inductive or capacitive readers and pressure regulators, and other accessories are highly desirable for convenience and production rate, they are considered to be outside the scope of this AIR.
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