# AD 76-15-02: Torsion Tube Mount Area

- Type: Airworthiness directive
- Status: Current
- Products: Alexander Schleicher Rhonlerche II
- Effective: August 2, 1976
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Glider
- Amendment: 39-2674
- Registered aircraft: 4 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4978697117C3CEA786256A54006F43AD.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/76-15-02

## The airworthiness directive

76-15-02 ALEXANDER SCHLEICHER: Amendment 39-2674. Applies to Rhonlerche II gliders, all serial numbers, certificated in all categories.

Compliance is required as indicated, unless already accomplished.

To detect cracks in the welded area between the flight control horizontal torsion tube and the front control stick mount and to prevent front control stick separation from the mount, accomplish the following:

  (a) Within the next 10 hours time in service after the effective date of this AD visually inspect with a 5 power magnifier the welded area between the flight control horizontal torsion tube and the front control stick mount in accordance with Alexander Schleicher Technical Note No. 13, page 1, dated June 23, 1975, and page 2, dated July 1, 1975, or an FAA-approved equivalent.

  (b) If a crack is found in performing the inspection required by paragraph (a) of this AD, prior to further flight, repair cracks and reinforce the torsion tube-mount area in accordance with Alexander Schleicher Technical Note No. 13, page 1, dated June 23, 1975, and page 2, dated July 1, 1975, or an FAA-approved equivalent.

  (c) If no crack is found in performing the inspection required by paragraph (a) of this AD, within the next 100 hours time in service after the effective date of this AD, reinforce the torsion tube-mount area in accordance with Alexander Schleicher Technical Note No. 13, page 1, dated June 23, 1975, and page 2, dated July 1, 1975, or an FAA-approved equivalent.

This amendment becomes effective August 2, 1976.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 7G6](https://openairdocs.org/tcds/7G6): Alexander Schleicher GmbH & Co. Segelflugzeugbau; names 1 of 1 models: Rhonlerche II

## 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: 4 (4 by airframe model, 0 by engine model)
- Makers: Schleicher 4

Models with the most aircraft:

- [Schleicher RHONLERCHE II](https://openairdocs.org/model/schleicher-rhonlerche-ii): 4 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/76-15-02/models.md
Every aircraft: https://openairdocs.org/ad/76-15-02/aircraft.md

Its text cites no advisory circulars or STCs.

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