| AD Number | 77-05-02 | Status | Active |
| Effective Date | March 10, 1977 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-2846 |
| Product Type | ["Aircraft"] | Product Subtype | ["Rotorcraft"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Bell Helicopter Textron, Inc. |
| Model(s) | 212 |
77-05-02 BELL: Amendment 39-2846. Applies to Bell Model 212 helicopters certificated in all categories.
Compliance required as indicated.
To prevent possible failure of certain main rotor blades having possible corrosion or fretting in the blade weight bolt holes or other defects in the spar, accomplish the following for main rotor blades, P/N 204-012-001-23 and -29.
For blades with less than 1475 hours' total time in service on the effective date of this AD, remove these blades from further service prior to attaining 1500 hours' total blade time in service.
For blades with 1475 or more hours' total blade time in service on the effective date of this AD, remove these blades from further service within 25 hours' time in service.
This AD does not apply to blades, P/N 204-012-001-33.
(Bell Helicopter Textron message dated February 17, 1977, to all Model 212 operators pertains to this subject.)
This amendment becomes effective March 10, 1977.