# AD 65-28-04: Fuel System Modifications

- Type: Airworthiness directive
- Status: Current
- Products: Maule Aerospace Technology M-4-210
- Effective: January 13, 1966
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-166
- Registered aircraft: 17 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B3387E92030106C786256A380064A979.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/65-28-04

## The airworthiness directive

65-28-04 MAULE: Amdt. 39-166 Part 39 Federal Register December 14, 1965. Applies to Model M-4-210 Airplanes, Serial Number 1001 through 1035.

Compliance required within the next 100 hours' time in service after the effective date of this AD unless already accomplished.

To prevent loss of engine power due to fuel starvation, modify the fuel system in accordance with Maule Service Letter No. 7, dated June 15, 1965, or later FAA-approved revision, or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA Central Region.

This directive effective January 13, 1966.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 3A23](https://openairdocs.org/tcds/3A23): Maule Aerospace Technology Inc.; names 1 of 50 models: M-4-210

## 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: 17 (17 by airframe model, 0 by engine model)
- Makers: Maule 17

Models with the most aircraft:

- [Maule M-4-210](https://openairdocs.org/model/maule-m-4-210): 12 aircraft (airframe model)
- [Maule BEE DEE M-4-210](https://openairdocs.org/model/maule-bee-dee-m-4-210): 5 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/65-28-04/models.md
Every aircraft: https://openairdocs.org/ad/65-28-04/aircraft.md

Its text cites no advisory circulars or STCs.

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