{"id":"F2017L01427","name":"AD/OXY/6 Amdt 1 - Passenger Oxygen Masks","slug":"ad-oxy-6-amdt-1-passenger-oxygen-masks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":144234,"registerId":"commonwealth-F2017L01427-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Oxygen Systems","sectionType":"part","heading":"Oxygen Systems","content":"# Oxygen Systems\n\n| AD/OXY/6 Amdt 1 | Passenger Oxygen Masks | 23/2017 |\n| --------------- | ---------------------- | ------- |\n\n```html\n

Applicability:

02 Corporation Oxygen Mask Presentation Unit Part Numbers as follows:

121-040-04

150-004-03

151-020

150-002

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 Mask Presentation Units 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, do the following:

(a) With the oxygen system of the aircraft activated, perform a test of the lanyard release pins by doing the following:

(1) Open the passenger mask presentation units and allow the mask assemblies to drop out.

(2) Prepare 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 mask 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 hanging weight, then the pin is serviceable and the unit may be returned to service.

(c) If the pin does not pull free from the oxygen actuator valve, prior to further flight do the following:

(1) Replace the pin with either 02 Corporation part number 100-111-2 or 100-111-3, which has a 20-degree angle and a rounded nose.

Note 3: The replacement pin is available from Mr Burt Parry, O2 Corporation, 3522 N. Comotara, Wichita, Kansas 67226 USA; 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. If the pin pulls free from the oxygen actuator valve at 3.4 kg or less of hanging weight, then the pin is serviceable and the unit may be returned to service.

Compliance:

Within 30 days after the commencement date of this AD, unless previously accomplished.

Note 4: Previous compliance with the requirements in AD/OXY/6 constitutes compliance with the equivalent requirements in this AD.

This AD commences on 10 November 2017.

Background:

An incident occurred where an inoperative oxygen supply system resulted 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 event.

Amendment 1 of this AD is issued to correct a part number in the second line of the applicability table of this AD.

\n```\n\n![](image.001.png)\n\nBen Wilson \nDelegate of the Civil Aviation Safety Authority\n\n2 November 2017","sortOrder":0},{"sectionNumber":"AD/OXY/6 Amdt 1","sectionType":"part","heading":"AD/OXY/6 Amdt 1","content":"## AD/OXY/6 Amdt 1","sortOrder":1},{"sectionNumber":"Passenger Oxygen Masks","sectionType":"part","heading":"Passenger Oxygen Masks","content":"## Passenger Oxygen Masks","sortOrder":2},{"sectionNumber":"23/2017","sectionType":"part","heading":"23/2017","content":"## 23/2017","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a targeted amendment to correct a specific part number error in the applicability table. The scope remains limited to the original safety issue regarding O2 Corporation oxygen mask presentation units. The amendment does not expand the scope beyond the original intent of ensuring passenger oxygen system functionality."},"complexity_factors":["Technical aviation terminology throughout (e.g., 'lanyard release pin', 'oxygen actuator valve', 'mask presentation units')","Specific part number references (47 different part numbers listed in applicability table)","Precise technical testing procedure with specific weight measurement (3.4 kg)","Cross-reference to US FAA AD 91-10-05 Amendment 39-6989","Nested conditional logic: test → if pass, serviceable; if fail → replace → retest → if pass, serviceable","Amendment structure requires understanding this corrects an earlier version (AD/OXY/6)"],"plain_english_summary":"This CASA Airworthiness Directive mandates testing—and, if needed, replacement—of O2 Corporation passenger oxygen mask lanyard release pins on specified business jets after reports the pin can stick and prevent oxygen flow in an emergency. Owners/operators of affected aircraft must hang a 3.4 kg weight from each pin within 30 days and replace pins that fail to release with improved parts.\n\nThis Amendment 1 corrects a part-number error from the original FAA-based directive."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 corrects a part number in the second line of the applicability table (Background) but does not expand or narrow the AD's operational requirements. The directive's substantive scope—test, replace, retest for non-releasing lanyard pins on listed units within 30 days—remains the same."},"complexity_factors":["Long applicability table listing many specific part numbers (Applicability table) increases identification and record-check burden for operators.","Physical test procedure requires on-aircraft work using a 3.4 kg weight and manipulation of mask assemblies (Requirement, paragraph (a)(1)–(3)).","Mandatory replacement specifies exact part numbers (100-111-2 or 100-111-3) and supplies a vendor contact, creating a potential supply-chain dependency (Requirement, paragraph (c)(1) and Note 3).","Short compliance timeframe: actions must be completed within 30 days of commencement (Compliance paragraph).","Amendment corrects a part number in the applicability table, requiring operators to re-check applicability where previous compliance was claimed (Background)."],"plain_english_summary":"This airworthiness directive requires operators of aircraft fitted with the listed Oxygen Mask Presentation Unit part numbers to test passenger mask lanyard release pins within 30 days and to replace any pin that does not release under a 3.4 kg hanging weight with specified replacement parts, then retest. It applies to aircraft operators and maintenance organisations responsible for those units and matters because it ensures passenger oxygen can flow in an emergency."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-oxy-6-amdt-1-passenger-oxygen-masks","history":"/api/acts/ad-oxy-6-amdt-1-passenger-oxygen-masks/history","analysis":"/api/acts/ad-oxy-6-amdt-1-passenger-oxygen-masks/analysis","conflicts":"/api/acts/ad-oxy-6-amdt-1-passenger-oxygen-masks/conflicts","importantCases":"/api/acts/ad-oxy-6-amdt-1-passenger-oxygen-masks/important-cases","documents":"/api/acts/ad-oxy-6-amdt-1-passenger-oxygen-masks/documents"}}