6660009553351
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6660-00-955-3351 Specification Set by the OEM (see RNCC code 3)
220.0
19.00in.
24.00in.
digital display
external
air data
electrical
range
single
solid state digital system accuracy plus or minus over full range of runway visual range values
60.0
uses inputs from transmissometer set to compute runway visual range, displays results on 2-character presentation which are compatible w/tables of us weather bureau
uses photoelectric memory drum for transmissivity storage tables and rvr values; provides 10 reading average of rvr values; provides rvr output signal circuitry for random sampling by an auxiliar message device; contains BUILT-In test circuits; + or - indications provided for rvr values greater than 6000 ft or less than 1000 ft; retains prev rvr value on visual display during background correction procedure
Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM
Identification Item Identification Guide (IIG) and Item Name Code (INC)
Definition Definition of approved item name (AIN): "COMPUTER,VISUAL DISTANCE"
A computer for determining the distance that can be seen by an observer, such as an aircraft pilot, to a predetermined point, such as the approach end of an airport runway. It is a component of a meteorological system for establishing criteria during the approach phase of an instrument landing under marginal or zero visibility conditions. See also computer, air traffic control.
6660-00-955-3351 Material Hazmat, Precious Metals, Criticality, Enviroment, and ESD
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Precious metal content is unknown
The item does not have a critical feature such as tolerance, fit restrictions or application. nuclear hardness properties have not been determined (not valid for input).
Identification Codes
HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.
PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.
ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.
ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.
CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.
