NSN 6610-00-866-8452, 6610008668452
INDICATOR,MACH AND TRUE AIR SPEED

Federal Supply Classification: FSC 6610 - Flight Instruments
National Item Identification Number: NIIN 008668452
Codification Country: United States
Item Name Code: INC 03446
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

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DLMS^® Summary

National Stock Number 6610-00-866-8452

National Stock Number (NSN) 6610-00-866-8452, or NIIN 008668452, (indicator,mach and true air speed) was assigned January 1, 1960 in the Federal Logistics Information System (FLIS). NIIN 008668452 was cancelled on December 16, 2017, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.

There are 4 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 03446. [AN INDICATOR WHICH DISPLAYS THE MACH NUMBER RANGE AT INDICATED AIR SPEED CHANGES IN FORWARD VELOCITY AND ATTITUDE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6610008668452 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

PRESENTATION TYPE: (AMNL) DIAL
KNOB QUANTITY: (ASSK) 2
PRESENTATION TYPE: (ALBY) ANGLE OF ATTACK
KNOB QUANTITY: (AMNL) DIAL
USAGE DESIGN: (ALBY) AIR SPEED AND
END ITEM IDENTIFICATION: (AGAV) FOR USE ON CARGO, TRAINER AND TRANSPORT ACFT
SPECIAL FEATURES: (FEAT) 6PROVIDES CONTINUOUS INDICATION OF AIRSPEED, MACH NUMBER AND ANGLE OF ATTACK; COMMAND INFORMATION IS PRESENTED IN TERMS OF MACH NUMBER AND INDICATED AIRSPEED; PARAMETERS ARE PRESENTED ON A VERTICAL SCALE 5 INCHES HIGH BY 3/4 INCHES WIDE; MECHANIZATION PROVIDES A MOVING TAPE SCALE READ AGAINST A FIXED REFERENCE ON A LUBBER LINE AT THE CENTER OF THE VERTICAL SCALE; 3 SCALES INDICATED AIRSPEED RANGE 50-600 KNOTS WITH SMALLEST INCREMENT 10 KNOTS FINISH NONLUMINOUS; AIRCRAFT MACH RANGE .2 TO 1.2 MACH WITH SMALLEST INCREMENT 0.01 MACH FINISH NONLUMINOUS; ANGLE OF ATTACK RANGE -10 TO +25 DEG WITH FINISH RED AND BLACK CROSS HATCHING NON LUMINOUS NUMERALS AND GRADS NOT USED; INCLUDES COMMAND MACH COUNTER AND COMMAND AIRSPEED COUNTER; INTEGRAL 5 V AC LIGHTING
USAGE DESIGN: (ALBY) AIR SPEED AND ANGLE OF ATTACK
III END ITEM I: (FEAT) PROVIDES CONTINUOUS INDICATION OF AIRSP
SPECIAL FEATURES: (ASSK) 2