# AD 64-17-05: Engine Breather Tube

- Type: Airworthiness directive
- Status: Current
- Products: Revo Lake LA-4, Lake LA-4A and Lake LA-4P
- Effective: August 28, 1964
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 15 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DD6BF956A08C4CB386256A5400439654.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/64-17-05

## The airworthiness directive

64-17-05 CONSOLIDATED AERONAUTICS: Amdt. 777 Part 507 Federal Register July 29, 1964. Applies to Models Lake LA-4, LA-4A and LA-4P Aircraft.

Compliance required prior to September 15, 1964.

To preclude the possibility of complete breather blockage and subsequent loss of engine oil due to icing, rework the uppermost (-37) elbow located on the oil breather separator container in accordance with Consolidated Aeronautics, Inc. Engineering Order No. 2-657, dated March 2, 1964. This rework consists of locating a 3/8 inch x 3/32 inch whistle slot 3/4 inch from top of breather container.

(Consolidated Aeronautics, Inc. Service Letter No. 8, Revision No. 1 dated March 7, 1964, covers this same subject.)

This directive effective August 28, 1964.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1A13](https://openairdocs.org/tcds/1A13): Revo Incorporated; names 3 of 7 models: Lake LA-4A, Lake LA-4, Lake LA-4P

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 15 (15 by airframe model, 0 by engine model)
- Makers: Consolidated Aeronautics 15

Models with the most aircraft:

- [Consolidated Aeronautics LAKE LA-4](https://openairdocs.org/model/consolidated-aeronautics-lake-la-4): 15 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/64-17-05/models.md
Every aircraft: https://openairdocs.org/ad/64-17-05/aircraft.md

Its text cites no advisory circulars or STCs.

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