# AD 85-06-07: Main Wheel Box

- Type: Airworthiness directive
- Status: Current
- Products: Alexander Schleicher ASK 21
- Effective: July 25, 1985
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Glider
- Amendment: 39-5097
- Registered aircraft: 69 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C5AB140CA3EA23586256A4E004425C8.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/85-06-07

## The airworthiness directive

85-06-07 ALEXANDER SCHLEICHER: Amendment 39-5097. Applies to Model ASK-21 Gliders, S/Ns 21194 through 21228, certificated in all categories.

Compliance is required prior to next flight.

To prevent the main wheel fairing from (1) causing structural damage to the fuselage wheel well box cutout and (2) loosening a rib during a hard landing causing aileron control problems, accomplish the following:

Inspect the wheel box cutout in the fuselage for clearance, and modify if necessary, in accordance with Actions 1 through 5 of Alexander Schleicher ASK-21 Technical Note No. 17, dated October 1, 1984, or an FAA-approved equivalent.

Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Brussels Aircraft Certification Office, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, 1000 Brussels, Belgium, telephone 513.38.30 X27l0.

Alexander Schleicher ASK-21 Technical Note No. 17, dated October 1, 1984, is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a) (1). All persons affected by this directive who have not already received this document from the manufacturer may obtain copies upon request to Alexander Schleicher, Segelflugzeugbau, D-6416 Poppenhausen, Federal Republic of Germany. This document also may be examined at the Office of the Regional Counsel, Federal Aviation Administration, 12 New England Executive Park, Burlington, Massachusetts 01803, weekdays, except Federal holidays between the hours of 8:00 am. and 4:30 pm.

This amendment becomes effective July 25, 1985, to all persons except those persons to whom it was made immediately effective by Priority Letter AD No. 85-06-07, issued March 26, 1985, which contained this amendment.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS G47EU](https://openairdocs.org/tcds/G47EU): Alexander Schleicher GmbH & Co. Segelflugzeugbau; names 1 of 3 models: ASK 21

## 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: 69 (69 by airframe model, 0 by engine model)
- Makers: Schleicher 43, Alexander Schleicher 26

Models with the most aircraft:

- [Schleicher ASK-21](https://openairdocs.org/model/schleicher-ask-21): 43 aircraft (airframe model)
- [Alexander Schleicher ASK 21](https://openairdocs.org/model/alexander-schleicher-ask-21): 26 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/85-06-07/models.md
Every aircraft: https://openairdocs.org/ad/85-06-07/aircraft.md

Its text cites no advisory circulars or STCs.

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