# AD 61-16-03: Seat Modification

- Type: Airworthiness directive
- Status: Current
- Products: Brantly International B-2, B-2A and B-2B
- Effective: August 4, 1961
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Registered aircraft: 53 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5E09A848AC3E0C3986256A38006098A8.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/61-16-03

## The airworthiness directive

61-16-03 BRANTLY: Amdt. 317 Part 507 Federal Register August 4, 1961. Applies to All B-2 Helicopters Prior to Serial No. 104.

Compliance required within the next 25 hours' time in service after the effective date of this AD.

Three accidents have resulted from the restriction of collective control due to interference by the seat. This interference is caused by improper seat installation which allows the seat to slide forward of its normal position. To minimize the possibility of restriction to the collective control by the seat, all Brantly B-2 helicopters prior to Serial No. 104 shall have the left hand seat angle at the rear of each seat modified to incorporate seat safety brackets, Brantly P/N 163-22 or equivalent.

(Brantly Service Bulletin No. 13, dated June 8, 1961, pertains to this same subject.)

This directive effective August 4, 1961.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 2H2](https://openairdocs.org/tcds/2H2): Brantly International Inc.; names 3 of 3 models: B-2B, B-2A, B-2

## 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: 53 (53 by airframe model, 0 by engine model)
- Makers: Brantly 53

Models with the most aircraft:

- [Brantly B-2B](https://openairdocs.org/model/brantly-b-2b): 34 aircraft (airframe model)
- [Brantly B-2](https://openairdocs.org/model/brantly-b-2): 17 aircraft (airframe model)
- [Brantly B-2A](https://openairdocs.org/model/brantly-b-2a): 2 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/61-16-03/models.md
Every aircraft: https://openairdocs.org/ad/61-16-03/aircraft.md

Its text cites no advisory circulars or STCs.

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