| AD Number | 74-17-02 | Status | Active |
| Effective Date | August 13, 1974 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-1915 |
| Product Type | ["Aircraft"] | Product Subtype | ["Rotorcraft"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Columbia Helicopters, Inc. |
| Model(s) | 107-II |
74-17-02 VERTOL: Amendment 39-1915. Applies to Vertol Model 107-II type helicopters certificated in all categories.
1. Prior to the next flight after the effective date of this AD, unless already accomplished, an inspection program for the rotor blades which has been approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, subsequent to March 28, 1974 must be initiated.
2. An acceptable program is one afforded by forward and aft rotor blades altered, inspected and maintained in accordance with Boeing Vertol Service Bulletin 107-329 or later FAA approved revisions. The visual checks of the rotor blade pressure indicator required by paragraph 2 of this AD may be performed by the pilot.
This amendment is effective August 13, 1974.