AD 75-04-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-40 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes |
Unsafe Condition
Oxygen mask deployment reliability may be insufficient due to potential failure of oxygen compartments to open properly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct oxygen mask functional tests and modify oxygen compartments as per specified operators letters and service bulletins within specified timeframes. Install pictorial warning placards and ensure partition doors open 180 degrees.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 300 hours' additional time in service after the effective date of this AD and within the next 1500 hours' additional time in service after the effective date of this AD
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Affected Aircraft
MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series airplanes, certificated in all categories.
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Federal Register Abstract
Oxygen
Applicability Source Text
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AD Final Rules - DRS_75-04-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-04-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes Subject: Oxygen Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/14/1975 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 75-04-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2085 AD NUMBER: 75-04-03 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes ACTION: SUMMARY: DATES: Effective February 14, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-04-03 MCDONNELL DOUGLAS: Amendment 39-2085. Applies to Douglas Model DC-10-10, -30, and -40 Series airplanes, certificated in all categories. Compliance required as follows unless already accomplished. To improve cabin oxygen mask deployment reliability, accomplish the following: A. Within the next 300 hours' additional time in service after the effective date of this AD, unless already accomplished within the last 300 hours' time in service: 1. Conduct an oxygen mask functional (drop) test, by cabin or by each section, in accordance with Paragraph IX of Douglas All Operators Letter No. 10-742, dated December 13, 1974, or 10-742A, dated January 24, 1975, or later FAA-approved revisions. 2. Oxygen compartments that fail to open must be inspected and modified in accordance with all of the applicable provisions of Douglas All Operators Letter No. 10-742, dated December 13, 1974, or 10-742A, dated January 24, 1975, or later FAA-approved revisions. 3. Repeat the oxygen mask functional test until 100% mask drops are achieved by cabin or by each section. B. Within the next 1500 hours' additional time in service after the effective date of this AD: 1. Modify partition oxygen compartment doors to insure 180 degrees opening in accordance with Douglas Service Bulletin No. 25-163, dated June 11, 1974, or later FAA-approved revisions. 2. Install pictorial warning placards on oxygen generator heat shields in accordance with Douglas Service Bulletin No. 35-12, dated April 26, 1974, or later FAA-approved revisions. 3. Modify oxygen compartments in passenger seat backs and partitions in accordance with Douglas Service Bulletin No. 35-16, dated August 19, 1974, or later FAA-approved revisions. 4. (a) Inspect and modify the cabin oxygen system, as applicable, in accordance with Douglas All Operators Letter No. 10-742, dated December 13, 1974, or 10-742A, dated January 24, 1975, or later FAA-approved revisions. (b) Repeat the oxygen mask functional test until 100% mask drops are achieved by cabin or by each section. C. Results of the functional tests required in paragraphs A. and B. must be forwarded within 30 days in a written report to the Chief, Aircraft Engineering Division, FAA Western Region. Recording approved by the Bureau of the Budget under Order BOB No. 04-R0174. D. The Chief, Aircraft Engineering Division, FAA Western Region, may approve equivalent inspections and modifications upon submittal of substantiating data. E. Aircraft may be flown to a base for accomplishment of the maintenance required by this AD per FAR's 21.197 and 21.199. This amendment becomes effective February 14, 1975. FOOTER:
Document Text
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AD Final Rules - DRS_75-04-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-04-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes Subject: Oxygen Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/14/1975 Make: The Boeing Company Model: DC-10-10 | DC-10-10F | DC-10-30 | DC-10-30F (KC-10A, KDC-10) | DC-10-40 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 75-04-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2085 AD NUMBER: 75-04-03 SUBJECT HEADING: Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -30, and -40 Series Airplanes ACTION: SUMMARY: DATES: Effective February 14, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-04-03 MCDONNELL DOUGLAS: Amendment 39-2085. Applies to Douglas Model DC-10-10, -30, and -40 Series airplanes, certificated in all categories. Compliance required as follows unless already accomplished. To improve cabin oxygen mask deployment reliability, accomplish the following: A. Within the next 300 hours' additional time in service after the effective date of this AD, unless already accomplished within the last 300 hours' time in service: 1. Conduct an oxygen mask functional (drop) test, by cabin or by each section, in accordance with Paragraph IX of Douglas All Operators Letter No. 10-742, dated December 13, 1974, or 10-742A, dated January 24, 1975, or later FAA-approved revisions. 2. Oxygen compartments that fail to open must be inspected and modified in accordance with all of the applicable provisions of Douglas All Operators Letter No. 10-742, dated December 13, 1974, or 10-742A, dated January 24, 1975, or later FAA-approved revisions. 3. Repeat the oxygen mask functional test until 100% mask drops are achieved by cabin or by each section. B. Within the next 1500 hours' additional time in service after the effective date of this AD: 1. Modify partition oxygen compartment doors to insure 180 degrees opening in accordance with Douglas Service Bulletin No. 25-163, dated June 11, 1974, or later FAA-approved revisions. 2. Install pictorial warning placards on oxygen generator heat shields in accordance with Douglas Service Bulletin No. 35-12, dated April 26, 1974, or later FAA-approved revisions. 3. Modify oxygen compartments in passenger seat backs and partitions in accordance with Douglas Service Bulletin No. 35-16, dated August 19, 1974, or later FAA-approved revisions. 4. (a) Inspect and modify the cabin oxygen system, as applicable, in accordance with Douglas All Operators Letter No. 10-742, dated December 13, 1974, or 10-742A, dated January 24, 1975, or later FAA-approved revisions. (b) Repeat the oxygen mask functional test until 100% mask drops are achieved by cabin or by each section. C. Results of the functional tests required in paragraphs A. and B. must be forwarded within 30 days in a written report to the Chief, Aircraft Engineering Division, FAA Western Region. Recording approved by the Bureau of the Budget under Order BOB No. 04-R0174. D. The Chief, Aircraft Engineering Division, FAA Western Region, may approve equivalent inspections and modifications upon submittal of substantiating data. E. Aircraft may be flown to a base for accomplishment of the maintenance required by this AD per FAR's 21.197 and 21.199. This amendment becomes effective February 14, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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