Computer, Air Data 6605-01-644-8691 NSN 6605-01-644-8691 · NIIN 016448691 · Part number 20AB
Rosemount Aerospace Inc Dba Rosemount Aerospace Inc · FSC 6605 — Navigational Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 59885
NSN 6605-01-644-8691 — this item is cataloged by the U.S. Government under National Stock Number 6605-01-644-8691. Manufacturer of record part number: 20AB .
Also searched as
6605-01-644-8691 ·
6605016448691 ·
NIIN 016448691 ·
01-644-8691 ·
FSC 6605 Navigational Instruments · CAGE 59885 · 20AB · 975.44.21.301
Nearby stock numbers
← 6605-01-644-8383 Compass, Magnetic, Unmounted
·
6605-01-645-1100 Inertial Navigation Unit →
Features
Computer,air Data — FSC 6605 Intelligence Input Method: AIR Power Source: EXTERNAL 3 manufacturer part numbers on file Manufacturer of record: Rosemount Aerospace Inc Dba Rosemount Aerospace Inc
Identification
NSN: 6605-01-644-8691
NIIN: 016448691
FSC: 6605 — Navigational Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 20AB
Manufacturer: Rosemount Aerospace Inc Dba Rosemount Aerospace Inc
General Description
The Computer,air Data, cataloged under National Stock Number 6605-01-644-8691, is classified within Federal Supply Class 6605 (Navigational Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Rosemount Aerospace Inc Dba Rosemount Aerospace Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter Value NSN 6605-01-644-8691 Primary Part Number 20AB Item Name Computer,air Data FSC / FSG 6605 / 66 — Navigational Instruments Manufacturer Rosemount Aerospace Inc Dba Rosemount Aerospace Inc Status ACTIVE Intelligence Input Method AIR Power Source EXTERNAL
Lifecycle & Compliance
Acquisition Status ACTIVE DEMIL Code DEMIL A — No Demilitarization Required Hazard Possible hazard — SDS may be required (DLA HMIC P) Criticality Code X
Cross-Reference Index
Part Number Manufacturer
20AB Gms International Corporation Dba Gms (USA)
20AB PRIMARY Rosemount Aerospace Inc Dba Rosemount Aerospace Inc (USA)
975.44.21.301 Pilatus Aircraft Ltd (CHE)
No interchangeability data on file.
Other items in FSC 6605 — Navigational Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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6605-00-001-4321
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6605-00-001-4322 · Item name not on file
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6605-00-001-4323 · Item name not on file
6605-00-001-4327
6605-00-001-4327 · Item name not on file
Frequently Asked Questions
What is NSN 6605-01-644-8691?
NSN 6605-01-644-8691 is a Computer,air Data, manufactured by Rosemount Aerospace Inc Dba Rosemount Aerospace Inc, classified under FSC 6605, Navigational Instruments. Status: active.
What part numbers are listed for NSN 6605-01-644-8691?
NSN 6605-01-644-8691 has 3 manufacturer part numbers on file: 20AB (Gms International Corporation Dba Gms), 20AB (Rosemount Aerospace Inc Dba Rosemount Aerospace Inc), 975.44.21.301 (Pilatus Aircraft Ltd).
What are the specifications of 20AB?
Key specifications for 20AB: Intelligence Input Method: AIR; Power Source: EXTERNAL. 2 specifications are documented in the U.S. Government catalog.
Is NSN 6605-01-644-8691 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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