| AD Number | 67-21-01 | Status | Active |
| Effective Date | July 03, 1967 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-440 |
| Product Type | ["Aircraft"] | Product Subtype | ["Rotorcraft"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Schweizer Aircraft Corporation |
| Model(s) | 269A 269A-1 269B |
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.