# AD 76-07-08: Water Leakage-float Models

- Type: Airworthiness directive
- Status: Current
- Products: Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and DHC-6-300
- Effective: April 12, 1976
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2571
- Registered aircraft: 88 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/206B22B3E2B907AE86256A380049ABE4.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/76-07-08

## The airworthiness directive

76-07-08 DEHAVILLAND: Amendment 39-2571. Applies to all DHC-6 aircraft fitted with Canadian Aircraft Products float models 12000, 12000A or 12000B modified for water bombing operation in accordance with Field Aviation Company, Ltd. Drawing Number 84193.

It has been found that water has been inadvertently entering the water compartments of the aforementioned CAP float models and creating a hazardous condition by exceeding the maximum allowable gross weight with passengers on board.

Compliance required prior to next flight. All aircraft affected by this Airworthiness Directive are no longer eligible for the carriage of passengers or cargo.

Post on the dashboard in full view of the pilot a placard reading "Aircraft Restricted to One Crew Member and Cargo (water) Only in Floats."

The restriction imposed by this Airworthiness Directive may be removed by the incorporation of an acceptable modification approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

This amendment is effective April 12, 1976.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A9EA](https://openairdocs.org/tcds/A9EA): De Havilland Aircraft of Canada Limited; names 4 of 5 models: DHC-6-1, DHC-6-100, DHC-6-200, DHC-6-300

## 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: 88 (88 by airframe model, 0 by engine model)
- Makers: Dehavilland 84, Dehavilland Acft Of Canada 4

Models with the most aircraft:

- [Dehavilland DHC-6-300](https://openairdocs.org/model/dehavilland-dhc-6-300): 59 aircraft (airframe model)
- [Dehavilland DHC-6-200](https://openairdocs.org/model/dehavilland-dhc-6-200): 19 aircraft (airframe model)
- [Dehavilland DHC-6-100](https://openairdocs.org/model/dehavilland-dhc-6-100): 6 aircraft (airframe model)
- [Dehavilland Acft Of Canada DHC 6-300](https://openairdocs.org/model/dehavilland-acft-of-canada-dhc-6-300): 4 aircraft (airframe model)

All 4 models: https://openairdocs.org/ad/76-07-08/models.md
Every aircraft: https://openairdocs.org/ad/76-07-08/aircraft.md

Its text cites no advisory circulars or STCs.

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