# AD 59-10-06: Wood Check Plate Rotor Blades

- Type: Airworthiness directive
- Status: Current
- Products: Kaman Aerospace K-240
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E6CFC28D9F82D6D986256A380060F30F.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/59-10-06

## The airworthiness directive

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.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1H3](https://openairdocs.org/tcds/1H3): Kaman Aerospace Corporation; names 1 of 1 models: K-240

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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