# AD 68-20-02: Landing Gear Switch

- Type: Airworthiness directive
- Status: Current
- Products: Dassault Fan Jet Falcon
- Effective: October 25, 1968
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-659
- Registered aircraft: 24 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/46E577F07A18A0D58625698B00541A65.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/68-20-02

## The airworthiness directive

68-20-02 AVIONS MARCEL DASSAULT: Amendment 39-659. Applies to Dassault Fan Jet Falcon Airplanes, Serial Numbers 1 thru 72.

Compliance required not later than December 31, 1968.

To prevent the ingress of moisture causing internal corrosion in the landing gear switch assembly, replace the existing microswitch with a modified switch, in accordance with Dassault AMD Service Bulletin No. 333, dated June 21, 1968, or later SGAC-approved issue, or FAA- approved equivalent, as follows:

LOCATION

Nose Landing Gear, EXISTING SWITCH P/N A1-23802 Telescopic Bar MODIFIED SWITCH P/N A1-23802 - V1 - V2 Nose Landing gear, EXISTING SWITCH P/N A1-23801 Door Actuating Cylinder MODIFIED SWITCH P/N A1-23801 - V1 - V2 Main Landing Gear, EXISTING SWITCH P/N A2-23802 Drag Strut Actuator Cylinder MODIFIED SWITCH P/N A2-23802 - V1 - V2 Main Landing Gear, EXISTING SWITCH P/N A2-23801 Door Actuating Cylinder MODIFIED SWITCH P/N A2-23801 - V1 - V2

This amendment becomes effective October 25, 1968.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A7EU](https://openairdocs.org/tcds/A7EU): Dassault Aviation; names 1 of 11 models: Fan Jet Falcon

## 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: 24 (24 by airframe model, 0 by engine model)
- Makers: Dassault/Sud 24

Models with the most aircraft:

- [Dassault/Sud FAN JET FALCON](https://openairdocs.org/model/dassault-sud-fan-jet-falcon): 24 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/68-20-02/models.md
Every aircraft: https://openairdocs.org/ad/68-20-02/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.