# AD 80-21-05: Landing Gear Cross Tubes

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron 205A-1 and 212
- Effective: October 15, 1980
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-3931
- Docket: 76-SW-28
- Registered aircraft: 118 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4E797B68A01FC74986256A4E00583E25.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/80-21-05

## The airworthiness directive

80-21-05 BELL: Amendment 39-3931. Applies to Model 205A-1 and 212 helicopters equipped with fixed float landing gears. (Airworthiness Docket No. 76-SW-28)

Compliance required within 50 hours' time in service after the effective date of this Ad unless already accomplished.

To preclude possible fatigue cracks from occurring in the landing gear cross tubes under the riveted saddle fittings, install forward and aft cross tube assemblies, P/N 205-050-114-23 and -25 respectively or higher dash numbers that have clamp-on saddle fittings.

Float kit installation, P/N 205-706-050-101, uses cross tubes having clamp-on saddle fittings.

(Bell Helicopter Textron Alert Service Bulletin Nos. 212-80-18 and 205-80-13 also pertain to this subject.)

This amendment becomes effective October 15, 1980.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H1SW](https://openairdocs.org/tcds/H1SW): Bell Textron Inc.; names 1 of 5 models: 205A-1
- [TCDS H4SW](https://openairdocs.org/tcds/H4SW): Bell Textron Inc.; names 1 of 4 models: 212

## 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: 118 (118 by airframe model, 0 by engine model)
- Makers: Bell 110, Bell Helicopter Textron 6, Bell/Southwest Florida Aviatio 2

Models with the most aircraft:

- [Bell 205A-1](https://openairdocs.org/model/bell-205a-1): 56 aircraft (airframe model)
- [Bell 212](https://openairdocs.org/model/bell-212): 54 aircraft (airframe model)
- [Bell Helicopter Textron 212](https://openairdocs.org/model/bell-helicopter-textron-212): 5 aircraft (airframe model)
- [Bell/Southwest Florida Aviatio 205 A1](https://openairdocs.org/model/bell-southwest-florida-aviatio-205-a1): 2 aircraft (airframe model)
- [Bell Helicopter Textron 205A-1](https://openairdocs.org/model/bell-helicopter-textron-205a-1): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/80-21-05/models.md
Every aircraft: https://openairdocs.org/ad/80-21-05/aircraft.md

Its text cites no advisory circulars or STCs.

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