# AD 80-11-07: Main Rotor Blades

- Type: Airworthiness directive
- Status: Current
- Products: Robinson Helicopter R22
- Effective: July 14, 1980
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-3834
- Registered aircraft: 133 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1E517947F826760386256A4E0046E743.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/80-11-07

## The airworthiness directive

80-11-07 ROBINSON HELICOPTER COMPANY: Amendment 39-3834. Applies to Model R22 series helicopters certificated in all categories.

Compliance is required as indicated.

To prevent main rotor blade structural failure, accomplish the following:

  (a) Prior to further flight remove from service all main rotor blades Serial numbers 1 through 91 and replace with like serviceable part.

  (b) Mark all blades Serial numbers 1 through 91 "UNAIRWORTHY" on the blade upper surface at the approximate mid-span with lettering at least 2 inches high and, using a metal stamp, mark "UNAIRWORTHY" on data plate.

This supersedes Amendment 39-3751, (45 FR 26032), AD 80-08-08.

This amendment becomes effective July 14, 1980, and was effective earlier for all recipients of the telegram T80WE25 dated May 20, 1980.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H10WE](https://openairdocs.org/tcds/H10WE): Robinson Helicopter Company; names 1 of 4 models: R22

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 133 (133 by airframe model, 0 by engine model)
- Makers: Robinson Helicopter 133

Models with the most aircraft:

- [Robinson Helicopter R22](https://openairdocs.org/model/robinson-helicopter-r22): 131 aircraft (airframe model)
- [Robinson Helicopter R22 BETA II](https://openairdocs.org/model/robinson-helicopter-r22-beta-ii): 2 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/80-11-07/models.md
Every aircraft: https://openairdocs.org/ad/80-11-07/aircraft.md

Its text cites no advisory circulars or STCs.

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