# AD 70-14-05: Voltage Regulator

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron Canada 206A
- Effective: August 15, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-1025
- Registered aircraft: 23 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2115C4075600DAC486256A340052CC59.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-14-05

## The airworthiness directive

70-14-05 BELL: Amendment 39-1025. Applies to all Model 206A helicopters certificated in all categories equipped with voltage regulator P/N 206-075-027-3.

Compliance is required within 300 hours time in service after the effective date of this airworthiness directive, unless already accomplished.

Replace the voltage regulator, Bell Part No. 206-075-027-3, in accordance with the instructions in paragraphs 1 through 11, as applicable, of Bell Helicopter Company Service Letter No. 206A-139, Revision "A", dated October 14, 1969, or later FAA approved revision.

Alternate means of compliance or equivalent replacement parts may be acceptable if approved by the Chief, Engineering and Manufacturing Branch, Flight Standards Division, Southwest Region, Federal Aviation Administration.

This amendment becomes effective August 15, 1970.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H2SW](https://openairdocs.org/tcds/H2SW): Bell Textron Canada Limited; names 1 of 12 models: 206A

## 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: 23 (23 by airframe model, 0 by engine model)
- Makers: Bell 23

Models with the most aircraft:

- [Bell 206A](https://openairdocs.org/model/bell-206a): 23 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/70-14-05/models.md
Every aircraft: https://openairdocs.org/ad/70-14-05/aircraft.md

Its text cites no advisory circulars or STCs.

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