| AD Number | 78-20-07 | Status | Active |
| Effective Date | October 25, 1978 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-3303 |
| 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) | 204B 205A-1 212 |
78-20-07 BELL: Amendment 39-3303. Applies to Bell Models 204B and 205A-1 helicopters equipped with fittings, P/N 204-012-102-5, and model 212 helicopters equipped with fittings, P/N 212-010-103-5, certificated in all categories. Compliance required as indicated.
To prevent possible failure of a fitting as a result of a crack in the thrust shoulder radius, accomplish the following:
(a) Remove main rotor inboard strap fittings with 1,100 or more hours total time in service on the effective date of this airworthiness directive (AD) within 100 hours time in service.
(b) Remove main rotor inboard strap fittings with less than 1,100 hours total time in service on the effective date of this AD, prior to attaining 1200 hours' total time in service.
(c) The retirement time of the fittings P/N 204-012-102-5 and 212-010-103-5 is reduced from 3,000 to 1,200 hours time in service.
This amendment is effective October 25, 1978.