# AD 76-02-01: Engine Power

- Type: Airworthiness directive
- Status: Current
- Products: Revo Lake LA-4 and Lake LA-4-200 with STC SA876EA
- Effective: January 30, 1976
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2494
- Registered aircraft: 154 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EC74E321A94A74D886256A540046B95F.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/76-02-01

## The airworthiness directive

76-02-01 CONSOLIDATED AERONAUTICS: Amendment 39-2494. Applies to all Model LA-4 and Model LA-4-200 airplanes equipped with STC SA876EA auxiliary fuel tanks.

Compliance required, as indicated, by the effective date of this Amendment. To prevent engine power interruption resulting from water contamination of the fuel system due to water entering the auxiliary fuel tank sumps, accomplish the following:

Install the following placard adjacent to the auxiliary tank fuel transfer switches:

"WARNING" "Auxiliary tank fuel transfer prohibited unless auxiliary tank sumps are drained free of water after each water operation."

This amendment becomes effective January 30, 1976.

## 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 2 of 7 models: Lake LA-4, Lake LA-4-200

## 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: 154 (154 by airframe model, 0 by engine model)
- Makers: Consolidated Aeronautics 154

Models with the most aircraft:

- [Consolidated Aeronautics LAKE LA-4-200](https://openairdocs.org/model/consolidated-aeronautics-lake-la-4-200): 139 aircraft (airframe model)
- [Consolidated Aeronautics LAKE LA-4](https://openairdocs.org/model/consolidated-aeronautics-lake-la-4): 15 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/76-02-01/models.md
Every aircraft: https://openairdocs.org/ad/76-02-01/aircraft.md

## Related documents

- [STC SA876EA](https://openairdocs.org/stc/SA876EA): 1.  Models LA-4-200, LA-4, LA-4A, LA-4P:

     Installation of Auxiliary Fuel System in accordance with Aerofab Drawings No. 180004, Rev. G, dated June 8, 1971,    
     and 180009, Rev. D, dated February 10, 1971.

2.  Model LA-4-200:  Increase of Gross Weight to 2690 pounds.

Limitations and Conditions (Continued):
(b)	       Aerofab Inc. Airplane Flight Manual Supplement:

(i)	No. 5, FAA approved June 24, 1971, revised July 18, 1975, for Lake LA-4, LA-4A, LA-4P, LA-4-200 Flight Manual  Dated July 11, 1960, revised April 11, 1973, or:
     
(ii)	No. 4, FAA approved December 28, 1973, revised July 18, 1975, for Lake LA-4-200 Flight Manual reissued  December 28, 1973.

      is required for operations at 2690 lb. Gross Weight.. Revo Inc, Named in the applicability

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