# AD 80-08-14: Carburetor Air Inlet Filter

- Type: Airworthiness directive
- Status: Current
- Products: Pure Air Carburetor Air Inlet Filter with STC SA69NW
- Effective: April 22, 1980
- Superseded by: Nothing supersedes this AD
- Product type: Appliance
- Amendment: 39-3745
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/025CE0DCBB9CC1A986256A39004DF020.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/80-08-14

## The airworthiness directive

80-08-14 PURE-AIR, INC.: Amendment 39-3745. Applies to all aircraft using the Pure-Air, Inc. carburetor air inlet filter installed per STC SA69NW.

Compliance is required as indicated.

A. Within 60 days from the effective date of this AD, unless already accomplished.

1. Remove Pure-Air filter foam elements which have been installed for more than 100 hours time in service or one year, whichever occurs first, and install screen (PN M-117 Large or PN M-118 Small) on the downstream inside surface of the filter box (PN M-102 Large or PN M-101 Small) by means of the filter attach bolts.

2. Replace each Pure-Air filter element which has accumulated either 100 hours or one year in service with a new filter element.

B. Replace the foam filter element:

1. Every 100 hours time in service or 12 calendar months, whichever comes first.

2. Any time the filter element becomes 50% covered with any foreign material.

C. Install the new Pure-Air supplies decal, which reflects the above replacement times, in plain view on the upper right hand outside surface of the filter box.

This amendment becomes effective April 22, 1980.

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

## Related documents

- [STC SA69NW](https://openairdocs.org/stc/SA69NW): Installation of Matney's engine charge air-air filter assembly. (AA-1B, AA-1, AA-1A 1969 AND ON) (AA-5 1972, 1973 AND 1974 ONLY). Matney D H, Named in the applicability

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