# AD 79-10-01: External Load Carrying Devices

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron Canada 206A and 206B with STC SH474AL or SH515AL
- Effective: May 14, 1979
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-3456
- Registered aircraft: 855 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/675740AE928ABA5186256A340055DA9C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/79-10-01

## The airworthiness directive

79-10-01 BELL: Amendment 39-3456. Applies to Models 206A series and 206B series helicopters certificated in all categories, with an Alaskan Sky-Craft external load carrying device and Bell pop-out float landing gear installed in accordance with Supplemental Type Certificate (STC) SH515AL, SH474AL, or SH3090AL.

Compliance is required as indicated, unless already accomplished.

To prevent possible puncturing of the Bell pop-out floats, (P/N 206-706-010), by Alaskan Sky-Craft (ASC) external load carrying devices, accomplish the following:

  (a) Within the next 10 hours time in service after the effective date of this AD, either -

  (1) Remove the ASC external load carrying device and the ASC Flight Manual Supplement from the Rotorcraft Flight Manual; or

  (2) Remove the Bell pop-out floats (P/N 206-706-010), install the Bell high skid landing gear (P/N 206-706-031), and replace the applicable ASC Rotorcraft Flight Manual Supplement with the appropriate supplement, all in accordance with ASC Service Bulletin No. 2 dated November 28, 1978 (hereinafter referred to as the Service Bulletin), or an FAA-approved equivalent.

  (b) After compliance with paragraph (a)(2) of this AD, before further flight with an ASC external load carrying device installed, ensure that the external load carrying device is installed in accordance with STC SH515AL, as amended May 2, 1978, STC SH309AL, as amended May 8, 1978, or STC SH474AL, as amended May 8, 1978, as appropriate.

NOTE: The appropriate revised ASC drawing which is part of the amended STC is referenced in paragraph A.(3), B.(3), or C.(3) of the Service Bulletin.

This amendment becomes effective May 14, 1979.

## 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 2 of 12 models: 206B, 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: 855 (855 by airframe model, 0 by engine model)
- Makers: Bell 816, Bell Helicopter Textron 29, Bell Helicopter Textron Canada 10

Models with the most aircraft:

- [Bell 206B](https://openairdocs.org/model/bell-206b): 790 aircraft (airframe model)
- [Bell Helicopter Textron 206B](https://openairdocs.org/model/bell-helicopter-textron-206b): 29 aircraft (airframe model)
- [Bell 206A](https://openairdocs.org/model/bell-206a): 23 aircraft (airframe model)
- [Bell Helicopter Textron Canada 206B](https://openairdocs.org/model/bell-helicopter-textron-canada-206b): 10 aircraft (airframe model)
- [Bell 206B II](https://openairdocs.org/model/bell-206b-ii): 3 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/79-10-01/models.md
Every aircraft: https://openairdocs.org/ad/79-10-01/aircraft.md

## Related documents

- [STC SH474AL](https://openairdocs.org/stc/SH474AL): Installation of Alaskan Sky-Craft Company, Inc. cargo step.. Alaskan Sky-Craft Co, Named in the applicability
- [STC SH515AL](https://openairdocs.org/stc/SH515AL): Fabrication and installation of Transporter cargo steps (left and right). Applies only to those Bell models 206A and 206B rotorcraft which are fitted with Bell high skid landing gear (P/N 206-706-064).. USA Airmobile, Inc, Named in the applicability
- [STC SH309AL](https://openairdocs.org/stc/SH309AL): Installation of cargo basket.. Alaskan Sky-Craft Co, Cited in the text

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