Ad/Cirrus/4 - Crew Seats (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Cirrus Design SR20 and SR22 Series Aeroplanes

AD/CIRRUS/4 Crew Seats 12/2005 DM

Applicability:

Model SR20 aircraft, serial numbers 1005 through 1455.

Model SR22 aircraft, serial numbers 0002 through 1044.

Requirement:

1.    For Model SR20 aircraft, serial numbers 1005 through 1423, and Model SR22 aircraft, serial numbers 0002 through 0972:

Accomplish the requirements of Cirrus Design Corporation Alert Service Bulletin SB A2X-25-08, dated 22 June 2004.

2.    For Model SR20 aircraft, serial numbers 1005 through 1455, and Model SR22 aircraft, serial numbers 0002 through 1044:

Accomplish the requirements of Cirrus Design Corporation Alert Service Bulletin SB 2X-25-06 R4, Revised 5 May 2005.

Note:  FAA AD 2005-17-19 Amdt 39-14240 refers.

Compliance:

Within 50 hours time in service or 180 days after 13 October 2005, whichever occurs first; unless already accomplished.

This Airworthiness Directive becomes effective on 27 September 2005.

Background:

The FAA received information from the manufacturer that the crew seats, under emergency landing dynamic loads, may fold forward at less than the 26g required by the regulations.  The actions required by this Directive are intended to prevent the crew seats from folding forward during emergency landing dynamic loads with consequent occupant injury.

David Villiers
Delegate of the Civil Aviation Safety Authority

22 September 2005