| AD Number | 60-23-05 | Status | Active |
| Effective Date | November 08, 1960 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | N/A |
| Product Type | ["Aircraft"] | Product Subtype | ["Rotorcraft"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Boeing Defense & Space Group |
| Model(s) | 42A 42B 44A 44B |
60-23-05 VERTOL: Amdt. 218 Part 507 Federal Register November 8, 1960. Applies to All 42 and 44 Series Helicopters.
Compliance required as indicated.
As a result of a recent fatigue failure of the lower directional bellcrank assembly, P/N 22C1611-13, all Vertol parts P/N 22C1611-13 must be retired upon the accumulation of 2,500 hours of time in service.
This directive effective November 8, 1960.