COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Oxygen Systems
AD/OXY/6 Passenger Oxygen Masks 2/92
Applicability: 02 Corporation Oxygen Mask Presentation Unit Part Numbers as follows:
121-040-04 | 150-004-03 | 151-020 |
50-0021 | 150-004-04 | 151-020-02 |
150-002-01 | 150-004-05 | 151-020-04 |
150-002-02 | 150-004-06 | 152-001 |
150-002-03 | 150-004-07 | l52-001-0l |
150-002-04 | 150-004-08 | 152-001-04 |
150-002-05 | 150-004-12 | 152-001-05 |
150-002-08 | 150-005 | 152-001-08 |
150-003T | 150-006 | 152-00l-13 |
150-003-04T | 150-022 | 152-003 |
150-004 | 151-010 | 152-004 |
150-004-01 | 151-010-02 | 152-004-05 |
150-004-02 | 151-010-04 | |
Note 1: Aircraft known to be fitted with the above part number oxygen boxes include but are not limited to, British Aerospace 125-800A; Challenger CL600-lAII, CL600- 2B16, and CL600-2A12; Gulfstream G-1159, G-1159A, G-1159B, and G-IV and
Falcon 20.
Note 2. FAA AD 91 10-05 Amendment 39-6989 refers.
Requirement: To prevent malfunctioning of the lanyard release pin that could prevent the flow of oxygen to a passenger in an emergency situation, accomplish the following:
(a) With the oxygen system activated, perform a test of the lanyard release pins by accomplishing the following:
(1) Open the passenger mask presentation units of the airplane and allow the mask assemblies to drop out.
(2) Make up a 3.4 Kg (7.5 lbs) weight with an attached string and hook, (eg, spring, clip, etc).
(3) Attach the hook to the lanyard attaching point of each actuator pin without dropping the weight and allow the weight to hang from the lanyard attaching point.
(b) If the pin pulls free from the oxygen actuator valve at 3.4 Kg or less of hanging weight, then the pin is satisfactory and the unit may be returned to service.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
(c) If the pin does not pull free from the oxygen actuator valve using the test required by paragraph (a) of this AD, prior to further flight accomplish the following:
(1) Replace the pin with either part number 100-111-2 or 100-111-3, which has a 20-degree angle and a rounded nose.
Note: The pin is available from the manufacturer by contacting Mr Burt Parry, O2 Corporation, 3522 N. Comotara, Wichita, Kansas 67226; Telephone (316) 634-1240;
Facsimile (316) 634-1061.
(2) Test the replacement pin installation in accordance with the test requirements of paragraph (a) of this AD to assure that the lanyard pin can be removed with a pull of 3.4 Kg or less. If the pin pulls free from the oxygen actuator valve at 3.4 Kg or less of hanging weight, then the pin is satisfactory and the unit may be returned to service.
Compliance: Within 100 hours time in service after 03 February 1992.
Background: One incident has occurred where an inoperative oxygen supply system occurred because a lanyard pin could not be readily pulled. The actions specified by this AD are intended to prevent a malfunction that could result in an inoperative passenger oxygen system and possible serious physical impairment of passengers during an emergency situation.
Overview
The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, address the need for stringent safety measures within the aviation industry. Specifically, the regulations focus on maintaining the airworthiness of aircraft, with Part 39 - 107 outlining directives related to airworthiness, such as the Schedule of Airworthiness Directives. One such directive, AD/OXY/6, pertains to passenger oxygen masks, particularly those used in the 02 Corporation Oxygen Mask Presentation Units. The objective of this directive is to prevent malfunctions of the lanyard release pins, which could otherwise hinder the flow of oxygen to passengers during emergency situations. The directive requires a test of the lanyard release pins and, if necessary, their replacement with pins that meet specified criteria to ensure the system operates correctly. This measure aims to prevent incidents where oxygen systems fail, potentially leading to serious physical harm to passengers.
Scope and Application
The Civil Aviation Regulations 1998, under Part 39 and specifically within Schedule 107 concerning Airworthiness Directives, applies to certain passenger oxygen masks on aircraft to ensure safety during emergency situations. This regulation targets aircraft fitted with specific part numbers for oxygen mask presentation units, including models such as the British Aerospace 125-800A and various Challenger and Gulfstream aircraft. The directive mandates that these oxygen systems must be tested to prevent malfunctioning of the lanyard release pins, which could otherwise impede the flow of oxygen to passengers. The requirement involves testing the pins under a specified weight to ensure they can be easily detached in an emergency, with a compliance deadline of within 100 hours after 3 February 1992. The directive does not explicitly exclude any particular entities or jurisdictions but is implicitly binding on all operators within the Commonwealth of Australia, ensuring the safety standards set forth are uniformly applied across the aviation industry within the nation.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39, Section 107, mandates a schedule of airworthiness directives for passenger oxygen masks. One such directive, AD/OXY/6, pertains to passenger oxygen masks to prevent malfunctions of the lanyard release pin, which could otherwise obstruct oxygen flow during an emergency. This directive applies to specific part numbers of the 02 Corporation Oxygen Mask Presentation Unit, which are used in various aircraft models, including the British Aerospace 125-800A, Challenger CL600 series, Gulfstream G-1159 series, and Falcon 20. The directive references FAA AD 91-10-05 Amendment 39-6989.
To comply with AD/OXY/6, operators must conduct a test on the lanyard release pins within 100 hours of service after 3 February 1992. This test involves activating the oxygen system, opening the passenger mask presentation units, and attaching a 3.4 kg (7.5 lbs) weight to the lanyard of each actuator pin. If the pin pulls free with the specified weight or less, the system is considered satisfactory. If the pin does not meet this requirement, it must be replaced with a part number 100-111-2 or 100-111-3, which features a 20-degree angle and a rounded nose. The replacement must then be tested in the same manner to ensure it meets the required standard.
The directive imposes several obligations on the parties it governs. Operators must ensure that all oxygen mask systems on their aircraft are tested within the specified timeframe. If a pin fails the test, it must be replaced with the specified part, and the replacement must also be tested to ensure it meets the required specifications. Additionally, operators must maintain records of compliance with this directive to demonstrate adherence to the regulations.
Failure to comply with AD/OXY/6 may result in serious consequences, as malfunctioning oxygen systems can lead to inoperative oxygen supplies during emergencies, potentially causing serious physical harm to passengers. While the Civil Aviation Regulations 1998 do not explicitly state penalties for non-compliance with airworthiness directives, violations can result in enforcement actions by the Civil Aviation Safety Authority (CASA). These actions may include fines, suspension of airworthiness certificates, or other regulatory measures. Additionally, operators may face civil liabilities for any injuries or damages resulting from non-compliance.