# AD 72-19-01: Main Rotor Retention Straps

- Type: Airworthiness directive
- Status: Current
- Products: Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 206B-1
- Effective: September 15, 1972
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-1517
- Registered aircraft: 861 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B9174FCC4A67F5F186256A3400532D45.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/72-19-01

## The airworthiness directive

72-19-01 BELL: Amdt. 39-1517. Applies to Bell Models 206A, 206B, 206A-1 and 206B-1 helicopters certificated in all categories.

Compliance required as indicated.

To prevent possible failure of the main rotor retention strap fitting, P/N 206-010-155-7, and the main rotor retention strap pin, P/N 206-010-123-1, accomplish the following:

  (a) Remove and replace retention strap fittings, P/N 206-010-155-7, with 90 or more hours total time in service on the effective date of this A.D., within the next 10 hours time in service.

  (b) Remove and replace retention strap fittings, P/N 206-010-155-7, with less than 90 hours total time in service on the effective date of this A.D. prior to accumulating 100 hours time in service.

  (c) Remove and replace retention strap pins, P/N 206-010-123-1, with 90 or more hours total time in service on the effective date of this A.D. within the next 10 hours time in service.

  (d) Remove and replace retention strap pins, P/N 206-010-123-1, with less than 90 hours total time in service on the effective date of this A.D., prior to accumulating 100 hours time in service.

  (e) The requirements of paragraphs (a) and (b) are not applicable to main rotor retention strap fittings, P/N 206-010-155-11 or -15.

The requirements of paragraphs (c) and (d) are not applicable to main rotor retention strap pins, P/N 206-010-123-3.

This supersedes Amendment 39-1510 (37 F.R. 17544), A.D. 72-18-05, which superseded 72-17-04. This amendment becomes effective September 15, 1972.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H2SW](https://openairdocs.org/tcds/H2SW): Bell Textron Canada Limited; names 4 of 12 models: 206B, 206A, 206B-1, 206A-1 (OH-58A)

## 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: 861 (861 by airframe model, 0 by engine model)
- Makers: Bell 822, Bell Helicopter Textron 29, Bell Helicopter Textron Canada 10

Models with the most aircraft:

- [Bell 206B](https://openairdocs.org/model/bell-206b): 790 aircraft (airframe model)
- [Bell Helicopter Textron 206B](https://openairdocs.org/model/bell-helicopter-textron-206b): 29 aircraft (airframe model)
- [Bell 206A](https://openairdocs.org/model/bell-206a): 23 aircraft (airframe model)
- [Bell Helicopter Textron Canada 206B](https://openairdocs.org/model/bell-helicopter-textron-canada-206b): 10 aircraft (airframe model)
- [Bell 206A-1](https://openairdocs.org/model/bell-206a-1): 6 aircraft (airframe model)
- [Bell 206B II](https://openairdocs.org/model/bell-206b-ii): 3 aircraft (airframe model)

All 6 models: https://openairdocs.org/ad/72-19-01/models.md
Every aircraft: https://openairdocs.org/ad/72-19-01/aircraft.md

Its text cites no advisory circulars or STCs.

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