# AD 70-07-03: Planetary Gear Support Spiders

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron Canada 206A
- Effective: May 1, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-962
- Registered aircraft: 23 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B5B205C81E475F0286256A340052C0C7.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-07-03

## The airworthiness directive

70-07-03 BELL: Amdt. 39-962. Applies to Model 206A Helicopters with transmissions incorporating Planetary Gear Support Spider, P/N 206-040-041-1.

Compliance required as indicated:

a. Planetary Gear Support Spiders P/N 206-040-041-1, with less than 450 hours' time in service on the effective date of this airworthiness directive must be removed from service prior to accumulating 500 hours' time in service.

b. Planetary Gear Support Spiders, P/N 206-040-041-1, with more than 450 hours' time in service on the effective date of this airworthiness directive must be removed from service within 50 hours' time in service after the effective date of this directive.

c. Retired Planetary Gear Support Spiders may be replaced with either the redesigned, heavy duty, Planetary Gear Support Spider P/N 206-040-080-3, using redesigned Shafts, P/N 206-040-043-5 (three required) in lieu of Shafts, P/N 206-040-043-3, or a serviceable Planetary Gear Support Spider, P/N 206-040-041-1, with less than 450 hours' total time in service. This latter item must be removed prior to accumulating 500 hours' total time in service.

Removal and replacement is to be accomplished in accordance with the Maintenance and Overhaul Instructions for the Bell Model 206A helicopter or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA Southwest Region.

(Bell Helicopter Service Bulletin No. 206A-14, Revision B, dated 1-23-70, pertains to this subject.) This amendment becomes effective May 1, 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/70-07-03/models.md
Every aircraft: https://openairdocs.org/ad/70-07-03/aircraft.md

Its text cites no advisory circulars or STCs.

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