AD 75-22-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pressed Steel Tank Company | Compressed Gas Cylinders | Airworthiness Directives; PRESSED STEEL TANK COMPANY: Applies to all Transport Category Airplanes Incorporating DOT-3HT-3000 Compressed Gas Cylinders |
| appliance | Pressed Steel Tank Company | Compressed Gas Cylinders | Airworthiness Directives; PRESSED STEEL TANK COMPANY: Applies to all Transport Category Airplanes Incorporating DOT-3HT-3000 Compressed Gas Cylinders |
Unsafe Condition
DOT-3HT-3000 compressed gas cylinders manufactured with the wrong composition steel between January and April 1975 could fail due to material defects.
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Required Actions
Remove affected cylinders from aircraft or hydrostatically retest them in accordance with 49 CFR Part 178. Alternatively, use an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Great Lakes Region, to verify the correct steel composition.
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Compliance Time
within 30 days after the effective date of this Airworthiness Directive, unless already accomplished
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Affected Aircraft
Pressed Steel Tank Company DOT-3HT-3000 compressed gas cylinders installed on all transport category airplanes, with original test dates from January 1975 through April 1975 and serial numbers 50793R through 51284R, 51913R through 52295R, 52413R through 52648R, 52663R through 52759R, 10316S through 10468S, 10516S through 10723S, or 11316S through 11415S.
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Federal Register Abstract
Compressed Gas Cylinders
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_75-22-22.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-22-22 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; PRESSED STEEL TANK COMPANY: Applies to all Transport Category Airplanes ...Show more Subject: Compressed Gas Cylinders Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/10/1975 Make: Pressed Steel Tank Company Model: Compressed Gas Cylinders Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 75-22-22 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2409 AD NUMBER: 75-22-22 SUBJECT HEADING: Airworthiness Directives; PRESSED STEEL TANK COMPANY: Applies to all Transport Category Airplanes Incorporating DOT-3HT-3000 Compressed Gas Cylinders ACTION: SUMMARY: DATES: Effective November 10, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-22-22 PRESSED STEEL TANK COMPANY: Amendment 39-2409. Applies to all transport category airplanes incorporating DOT-3HT-3000 compressed gas cylinders manufactured by Pressed Steel Tank Company with original test dates on the cylinder from January 1975 through April 1975 and the following serial numbers: 50793R through 51284R 51913R through 52295R 52413R through 52648R 52663R through 52759R 10316S through 10468S 10516S through 10723S 11316S through 11415S Compliance required within 30 days after the effective date of this Airworthiness Directive, unless already accomplished. To identify and prevent service use of DOT-3HT-3000 cylinders which were manufactured with the wrong composition steel, accomplish the following: (a) Remove affected cylinders from aircraft, or before installing affected cylinders in aircraft, retest hydrostatically in accordance with Title 49 Code of Federal Regulations, Part 178; or (b) Use an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Great Lakes Region, to determine that the affected cylinder is manufactured with the intended composition steel. The amendment becomes effective November 10, 1975. FOOTER:
Document Text
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AD Final Rules - DRS_75-22-22.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-22-22 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; PRESSED STEEL TANK COMPANY: Applies to all Transport Category Airplanes ...Show more Subject: Compressed Gas Cylinders Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/10/1975 Make: Pressed Steel Tank Company Model: Compressed Gas Cylinders Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 75-22-22 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2409 AD NUMBER: 75-22-22 SUBJECT HEADING: Airworthiness Directives; PRESSED STEEL TANK COMPANY: Applies to all Transport Category Airplanes Incorporating DOT-3HT-3000 Compressed Gas Cylinders ACTION: SUMMARY: DATES: Effective November 10, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-22-22 PRESSED STEEL TANK COMPANY: Amendment 39-2409. Applies to all transport category airplanes incorporating DOT-3HT-3000 compressed gas cylinders manufactured by Pressed Steel Tank Company with original test dates on the cylinder from January 1975 through April 1975 and the following serial numbers: 50793R through 51284R 51913R through 52295R 52413R through 52648R 52663R through 52759R 10316S through 10468S 10516S through 10723S 11316S through 11415S Compliance required within 30 days after the effective date of this Airworthiness Directive, unless already accomplished. To identify and prevent service use of DOT-3HT-3000 cylinders which were manufactured with the wrong composition steel, accomplish the following: (a) Remove affected cylinders from aircraft, or before installing affected cylinders in aircraft, retest hydrostatically in accordance with Title 49 Code of Federal Regulations, Part 178; or (b) Use an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Great Lakes Region, to determine that the affected cylinder is manufactured with the intended composition steel. The amendment becomes effective November 10, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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