The Filter Element,air Conditioning, cataloged under National Stock Number 1660-01-665-6827, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Clark Air Conditioning Systems, Inc. Dba Clark Air Conditioning Systems Inc Div Filtration Division. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-665-6827 |
| Primary Part Number | TDPA036712.535 |
| Item Name | Filter Element,air Conditioning |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Clark Air Conditioning Systems, Inc. Dba Clark Air Conditioning Systems Inc Div Filtration Division |
| Status | ACTIVE |
| Body Length | 35.0 INCHES NOMINAL IN |
| Body Thickness | 0.875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| TDPA036712.535 PRIMARY | Clark Air Conditioning Systems, Inc. Dba Clark Air Conditioning Systems Inc Div Filtration Division (USA) |
| Reference | Meaning |
|---|---|
| 311AF1PLY | 5/9 Secondary reference Clark Air Conditioning Systems, Inc. Dba Clark Air Conditioning Systems Inc Div Filtration Division |
| 311AF1PLY | 5/9 Secondary reference Koch Filter Corporation |
| 311AF1PLY | 5/9 Secondary reference Filter and Coating Technology, Inc. Dba Fact Div Fact Inc. |
NSN 1660-01-665-6827 is a Filter Element,air Conditioning, manufactured by Clark Air Conditioning Systems, Inc. Dba Clark Air Conditioning Systems Inc Div Filtration Division, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-665-6827 has 1 manufacturer part number on file: TDPA036712.535 (Clark Air Conditioning Systems, Inc. Dba Clark Air Conditioning Systems Inc Div Filtration Division).
Key specifications for TDPA036712.535: Overall Width: 12.5 INCHES NOMINAL IN; Body Length: 35.0 INCHES NOMINAL IN; Special Features: PAD FILTER; Part Name Assigned by Controlling Agency: FILTER ELEMENT,AIR. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.