# AD 58-09-01: Main Rotor Blade Inspection

- Type: Airworthiness directive
- Status: Current
- Products: Scotts-Bell 47 47J
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Registered aircraft: 6 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/196B67819AC82E7E86256A340050F159.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/58-09-01

## The airworthiness directive

58-09-01 BELL: Applies to Model 47J Helicopters.

Compliance required prior to next flight.

1. All 47-110-401-13 main rotor blades known to have hit an object, or to have contacted the universal joint cover on the tail boom causing an indentation over 1/4-inch deep in the universal joint cover, must be removed from service for further detail inspection, and repair if necessary. Such internal inspections and repairs are to be made by the blade manufacturer.

2. Visually inspect the stainless steel leading edge of the -13 blades for cracks and remove cracked blades. No field repairs are authorized. Cracked blades are to be returned to the blade manufacturer for detail inspection and repair.

3. Remove all 47-110-401-9 main rotor blades. These blades must be reworked to the -13 configuration prior to return to service.

CAA telegraphic instructions of April 28, 1958, covered this subject.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2H1](https://openairdocs.org/tcds/2H1): Scott's-Bell 47 Inc; names 1 of 4 models: 47J

## 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: 6 (6 by airframe model, 0 by engine model)
- Makers: Bell 6

Models with the most aircraft:

- [Bell 47J](https://openairdocs.org/model/bell-47j): 6 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/58-09-01/models.md
Every aircraft: https://openairdocs.org/ad/58-09-01/aircraft.md

Its text cites no advisory circulars or STCs.

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