# AD 47-06-09: Landing Gear Retracting Mechanism

- Type: Airworthiness directive
- Status: Current
- Products: Textron Army AT-11 and C18S
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 13 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F43CE1B47CE7A29186256A1C00720AAE.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/47-06-09

## The airworthiness directive

47-06-09 BEECH: (Was Mandatory Note 1 of AD-2-582-2 and Mandatory Note 4 of AD-757-2.) Applies to All AT-11 and C18S Airplanes Equipped With 33-Inch Tires.

Compliance required at next periodic inspection.

To prevent collapse of the landing gear due to cracking of the shock cylinder retracting leg attachment lugs or failure of the retracting legs the following items should be complied with:

  (1) Check the rear leg and lug lengths to ascertain whether they have been previously modified. Rear legs (Beech P/N 18820) 22 7/8 inches between hole centers should be installed only with cylinders having original lugs (approximately 1 7/8 inches from centerline of holes to outside of cylinder wall). Rear legs 23 19/64 inches between hole centers should be installed only with cylinders having short modified lugs (approximately 7/8 inch from centerline of holes to outside of cylinder wall). Legs 23 19/64 inches long with a 1 3/4 inches diameter reinforcing tube welded to the original ends should be replaced with Beech P/N 804-188416.

  (2) Inspect the shock cylinder lugs for cracks. If cracks are found in the lugs either the cylinder must be replaced or the cracks repaired. Contact FAA, Kansas City, MO., for repair methods.

(Beech Service Bulletin C18-6 covers this same subject.)

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-2-582](https://openairdocs.org/tcds/A-2-582): Textron Aviation Inc.; names 1 of 2 models: Army AT-11
- [TCDS A-757](https://openairdocs.org/tcds/A-757): Textron Aviation Inc.; names 1 of 1 models: C18S

## 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: 13 (13 by airframe model, 0 by engine model)
- Makers: Beech 13

Models with the most aircraft:

- [Beech C18S](https://openairdocs.org/model/beech-c18s): 13 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/47-06-09/models.md
Every aircraft: https://openairdocs.org/ad/47-06-09/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.