| AD Number | 59-10-06 | Status | Active |
| Effective Date | Not specified | 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) | Kaman Aerospace Corporation |
| Model(s) | K-240 |
59-10-06 KAMAN: Applies to All K-240 Helicopters (Military HTK-1).
Due to associated adverse service experience, the wood type cheek plate rotor blades, P/N K411042-1, -2, -7, and -8 are ineligible for use. These blades modified to conform to, or replaced by, fiberglass type cheek plate rotor blades, P/N K411042-77 and -78, are acceptable with a 2,500-hour retirement life.