# AD 84-05-51: Collective Sleeves

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron 214B, 214B-1 and 214ST
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Registered aircraft: 30 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F30AC209C75E1F1986256A4E0056C9F5.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/84-05-51

## The airworthiness directive

T84-05-51 BELL HELICOPTER TEXTRON INCORPORATED: Telegram issued February 27, 1984.

Applies to Bell Helicopter Textron, Incorporated, Models 214B, 214B-1, and 214ST helicopters certified in all categories that are equipped with collective sleeves P/N 214-010-411-(all dash numbers) that have the serial number prefix A-19. (Airworthiness Docket No. 84-ASW-11.)

Compliance is required as indicated.

A. The affected parts shall be magnetic particle inspected using the procedures described in Bell Helicopter Textron, Incorporated, Telegraphic Alert Service Bulletin No. 214ST-84-17 or 214B-84-26, as applicable, or other FAA approved equivalent procedure, in accordance with the following schedule:

1. For those parts in the range of zero to five hundred hours time-in-service, perform the inspection before further flight.

2. For those parts in the range of 500 to 1000 hours time-in-service, perform the inspection prior to the next 100 hours time-in-service.

3. Forthose parts that have 1000 or more hours in service, perform the inspection not later than the next 2500 hour overhaul period already required by the manufacturer.

B. Remove any cracked part from service and replace it with a serviceable part.

C. The helicopter may be flown to a repair base for the above inspections under the provisions of FAR 21.197.

D. Any equivalent means of compliance with this AD must be approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, Southwest Region.

E. Bell Helicopter Textron, Incorporated, Telegraphic Alert Service Bulletin 214ST-84-17, or 214B-84-26 is equivalent means of compliance with this AD.

This AD becomes effective upon receipt.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H6SW](https://openairdocs.org/tcds/H6SW): McDermott 214 Holdings, LLC; names 2 of 2 models: 214B, 214B-1
- [TCDS H10SW](https://openairdocs.org/tcds/H10SW): McDermott 214 Holdings, LLC; names 1 of 1 models: 214ST

## 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: 30 (30 by airframe model, 0 by engine model)
- Makers: Bell 29, Bell Helicopter Textron 1

Models with the most aircraft:

- [Bell 214ST](https://openairdocs.org/model/bell-214st): 18 aircraft (airframe model)
- [Bell 214B-1](https://openairdocs.org/model/bell-214b-1): 9 aircraft (airframe model)
- [Bell 214B](https://openairdocs.org/model/bell-214b): 2 aircraft (airframe model)
- [Bell Helicopter Textron 214ST](https://openairdocs.org/model/bell-helicopter-textron-214st): 1 aircraft (airframe model)

All 4 models: https://openairdocs.org/ad/84-05-51/models.md
Every aircraft: https://openairdocs.org/ad/84-05-51/aircraft.md

Its text cites no advisory circulars or STCs.

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