I, PETER William Boyd, Executive Manager, Standards Development and Future Technologies Division, a delegate of CASA, make this instrument under 21.601 (2) (a) of the Civil Aviation Safety Regulations 1998.
[Signed P. Boyd]
9 March 2012
Australian Technical Standard Order C1006—Restraint system automated release device
1 Name of instrument
This instrument is the Australian Technical Standard Order C1006.
This instrument commences on the day after it is registered.
This Australian Technical Standard Order (ATSO) prescribes the minimum performance standards (MPS) which restraint system automated release devices must meet in order to obtain an ATSO authorisation or letter of design approval and so be identified with the applicable ATSO marking.
In this ATSO:
restraint means a tether, strop, cargo tie-down, seat belt or similar device, which includes its own manual release system.
Restraint System Automated Release Device means an add-on dual-purpose restraint-release device used in conjunction with a restraint and an anchor point in the aircraft. The restraint and release functions of restraint and anchor point are unaffected by incorporation of the device. The device keeps the occupant/restrained item inside the aircraft during flight and automatically activates to release the person or restrained item from the anchor point if the aircraft ditches or crashes into water.
5 Minimum performance standard for Restraint System Automated Release Device
The minimum performance standard for a Restraint System Automated Release Device is as follows:
(a) in restraint mode:
(i) the device must have been statically tested to its ultimate rated strength. If the device is designed to attach to occupant restraints, the device must have a load rating of not less than 15kN;
(ii) for the load rating test, the device must be attached to an anchor point and restraint, using a method that replicates that likely to be found in service;
(iii) a device designed for occupant restraint must be designed to interface with the restraint without their modification;
(iv) the device must not interfere with, or modify, the attaching restraint system’s normal attaching method or restraint function;
(v) if the device can be easily removed from an anchor point with one hand, the release mechanism must be designed to release with two independent actions;
(vi) the device must be designed so as to protect against unintentional disengagement;
(vii) if attaching to a restraint, the device must be specifically designed against dynamic rollout;
(viii) the device must not restrict the attaching restraint system’s range of movement;
(b) in release mode:
(i) the device must release independently and without any further operator action required;
(ii) the device must not interfere with, or modify, the attaching restraint system’s normal manual release method;
(iii) if the device is designed to release only in salt water, it must be demonstrated to trigger the release in potassium chloride/water solutions down to a minimum water salinity of 31.0 parts per thousand (PPT);
(iv) the device must have defences against inadvertent activation by salt spray, rain or fluid spillage;
(v) the device, when immersed, must release within 5.5 seconds, but not within 1.5 seconds;
(vi) the device must not be affected, or its activation time delayed, by contact with water at low temperatures; the device must be demonstrated to activate in water temperatures from 1o to 30o Celsius;
(vii) on release, any component of the device that may remain attached to the restraint it is releasing must be of a profile that is not prone to snagging;
(viii) once released, the device must not be capable of being refitted and made ready for immediate reuse;
(c) compliance with standards:
(i) temperature—RTCA/DO160G Section 4, Category A2;
(ii) temperature variation—RTCA/DO160G Section 5, Category B;
(iii) humidity—RTCA/DO160G Section 6, Category B;
(iv) operational shocks— RTCA/DO160G Section 7, Category A;
(v) vibration— RTCA/DO160G Section 8, Category U, fuselage zone, unknown helicopter frequency;
(vi) waterproofing— RTCA/DO160G Section 10, Category W;
(vii) sand and dust— RTCA/DO160G Section 12, Category S;
(viii) salt fog— RTCA/DO160G Section 14, Category T;
(ix) radio frequency susceptibility— RTCA/DO160G Section 20, Category R modified with an upper frequency limit of 12 GHz;
(x) flammability— RTCA/DO160G Section 26, Category C;
(d) additional requirements:
(i) any electrical circuitry is capable of self-diagnosing internal faults and clearly indicating to the end user the presence of such faults to prevent unsafe use of the device; and
(ii) the device shall be non-aircraft type specific.
6 STATEMENT OF CONFORMANCE
(1) A person must not identify a Restraint System Automated Release Device with an ATSO marking unless the person does so in accordance with subregulation 21.603(1) or 21.617(3) of CASR 1998, having obtained an ATSO authorisation or a letter of ATSO design approval.
(2) To obtain an ATSO authorisation or a letter of ATSO design approval, an applicant must submit the documents referred to:
(a) in subregulation 21.605(2), for an ATSO authorisation; or
(b) subregulation 21.617(1), for a letter of ATSO design approval.
In addition to the marking requirements of paragraph 21.607(1)(c) of CASR 1998, a Restraint System Automated Release Device;
(a) must be marked with its rated strength; and
(b) if it is designed only to release in salt water, must be marked accordingly.
8 MAJOR CHANGE
A major change to a design, within the meaning of subregulation 21.611(3) of CASR 1998, will require a new ATSO authorisation or a letter of ATSO design approval.
9 DATA REQUIREMENTS
(1) In addition to the document requirements of subregulation 21.605(2) or 21.617(2) of CASR 1998, whichever is applicable, an application for an ATSO authorisation; or a letter of ATSO design approval must be accompanied by 1 copy of each of the following:
(a) a complete technical description of the Restraint System Automated Release Device, including detail drawings, manufacturing procedures, material identification and specifications;
(b) operating instructions and limitations;
(c) a completed compliance summary against the applicable performance standards established in this ATSO;
(d) conformity inspection reports for the tested components;
(e) a Component Maintenance Manual (CMM) containing information on the periodic maintenance, calibration and repair for the continuing airworthiness of the equipment, including recommended inspection intervals and service life;
(f) qualification and approval test reports against the applicable functional performance standards established in this ATSO.
(2) In addition, the manufacturer must supply to a user with each Restraint System Automated Release Device:
(a) operating instructions and limitations; and
(b) the CMM.