AD 67-21-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer Aircraft Corporation | 269A | Airworthiness Directives; Hughes Model 269 Series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269A-1 | Airworthiness Directives; Hughes Model 269 Series Helicopters |
| aircraft | Schweizer Aircraft Corporation | 269B | Airworthiness Directives; Hughes Model 269 Series Helicopters |
Unsafe Condition
Concentration of carbon monoxide gas in the cabin in excess of the amounts allowable under applicable airworthiness rules due to improper positioning of the upper and lower air vents on the left and right hand door panels and inadequate sealing of the cabin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install air scoop, restrict positioning of the upper and lower air vents on the left and right hand door panels to face forward and upward, and seal cabin in accordance with Hughes Service Information Notice No. N-33 dated May 12, 1967, or later approved revision or by a method approved by the Aircraft Engineering Division, FAA Western Region, Los Angeles, California.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 25 hours' time in service following the effective date of this AD unless already accomplished
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Affected Aircraft
Schweizer Aircraft Corporation Model 269A, 269A-1, 269B helicopters
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Air Scoop
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_67-21-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-21-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hughes Model 269 Series Helicopters Subject: Air Scoop Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/03/1967 Make: Schweizer Aircraft Corporation Model: 269A | 269A-1 | 269B Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185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: 67-21-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-440 AD NUMBER: 67-21-01 SUBJECT HEADING: Airworthiness Directives; Hughes Model 269 Series Helicopters ACTION: SUMMARY: DATES: Effective July 3, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-21-01 HUGHES: Amdt. No. 39-440, Part 39, Federal Register June 28, 1967, Applies to Hughes Model 269 Series Helicopters. Compliance required within the next 25 hours' time in service following the effective date of this AD unless already accomplished. To prevent concentration of carbon monoxide gas in the cabin in excess of the amounts allowable under applicable airworthiness rules, accomplish the following: Install air scoop, restrict positioning of the upper and lower air vents on the left and right hand door panels to face forward and upward, and seal cabin in accordance with Hughes Service Information Notice No. N-33 dated May 12, 1967, or later approved revision or by a method approved by the Aircraft Engineering Division, FAA Western Region, Los Angeles, California. This amendment effective July 3, 1967. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_67-21-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-21-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Hughes Model 269 Series Helicopters Subject: Air Scoop Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 07/03/1967 Make: Schweizer Aircraft Corporation Model: 269A | 269A-1 | 269B Product Type: Aircraft Product Subtype: Rotorcraft 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: 67-21-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-440 AD NUMBER: 67-21-01 SUBJECT HEADING: Airworthiness Directives; Hughes Model 269 Series Helicopters ACTION: SUMMARY: DATES: Effective July 3, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-21-01 HUGHES: Amdt. No. 39-440, Part 39, Federal Register June 28, 1967, Applies to Hughes Model 269 Series Helicopters. Compliance required within the next 25 hours' time in service following the effective date of this AD unless already accomplished. To prevent concentration of carbon monoxide gas in the cabin in excess of the amounts allowable under applicable airworthiness rules, accomplish the following: Install air scoop, restrict positioning of the upper and lower air vents on the left and right hand door panels to face forward and upward, and seal cabin in accordance with Hughes Service Information Notice No. N-33 dated May 12, 1967, or later approved revision or by a method approved by the Aircraft Engineering Division, FAA Western Region, Los Angeles, California. This amendment effective July 3, 1967. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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