PartsTable TECHNICAL DATA SHEET

NSN 1660-01-733-3191Government record, cited

Duct Assembly, Air Conditioning-H1660-01-733-3191

NSN 1660-01-733-3191 · NIIN 017333191

FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories

Government record, cited

Also searched as 1660-01-733-3191 · 1660017333191 · NIIN 017333191 · 01-733-3191 · FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · 213T7501-22 · 213T7501

Nearby stock numbers ← 1660-01-733-3188 Duct Assembly, Air Conditioning-H · 1660-01-733-3199 Duct Assembly, Air Conditioning-H →

Features

Duct Assembly,air Conditioning-H — FSC 1660

Identification

NSN: 1660-01-733-3191
NIIN: 017333191
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories

General Description

The Duct Assembly,air Conditioning-H, cataloged under National Stock Number 1660-01-733-3191, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Duct Assembly,air Conditioning-H
FSC / FSG	1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16)

Technical Specifications

Parameter	Value
NSN	1660-01-733-3191
Item Name	Duct Assembly,air Conditioning-H
FSC / FSG	1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL Q — CCL Item — Commerce Control List
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 9

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

1660-01-733-3199213T7501-24 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)The Boeing Company Div Defense

1660-01-733-3200213T7501-5 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)The Boeing Company Div Defense

1660-01-733-3204 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)

1660-01-733-3402213T7501-3 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)The Boeing Company Div Defense

1660-01-733-3404213T7501-40 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)The Boeing Company Div Defense

1660-01-733-3408213T7501-26 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)The Boeing Company Div Defense

1660-01-733-3726 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)

1660-01-733-3972 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)

1660-01-733-4011 POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Possible match (shared part number)

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
213T7501-22	3/2 Design control — primary reference U.S. Government activity
213T7501	D/9 Drawing number reference only U.S. Government activity

Related Parts

1660-01-733-3199POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

213T7501-24

1660-01-733-3200POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

213T7501-5

1660-01-733-3204POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

1660-01-733-3402POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

213T7501-3

1660-01-733-3404POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

213T7501-40

1660-01-733-3408POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

213T7501-26

1660-01-733-3726POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

1660-01-733-3972POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

1660-01-733-4011POSSIBLE MATCH

DUCT ASSEMBLY,AIR CONDITIONING-H

Frequently Asked Questions

What is NSN 1660-01-733-3191?

NSN 1660-01-733-3191 is a Duct Assembly,air Conditioning-H, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.

What NSN replaces 1660-01-733-3191?

9 possible matches (shared part number, not a government interchangeability claim): 1660-01-733-3199, 1660-01-733-3200, 1660-01-733-3204. Verify interchangeability with system specifications before substitution.

Is NSN 1660-01-733-3191 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

What is the DEMIL code for NSN 1660-01-733-3191?

NSN 1660-01-733-3191 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.

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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