# AD 60-07-02: Tail Rotor Drive Shaft

- Type: Airworthiness directive
- Status: Current
- Products: Brantly International B-2, B-2A and B-2B
- Superseded by: Nothing supersedes this AD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/E045BAA4C3DED51886256CC400745449.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/60-07-02

## The airworthiness directive

60-07-02 BRANTLY: Amdt. 117 Part 507 Federal Register March 23, 1960. Applies to Model B-2 Helicopters.

Compliance required as indicated.

  (a) Applies to Serial Numbers 1 through 31. Compliance required prior to next flight.

Failures of the tail rotor drive shaft through the cooling fan drive pulley bolt hole have occurred. These failures result in loss of directional control. To relieve stresses in this area and preclude recurrence of these failures, the tail rotor drive system must be modified to incorporate:

  (1) New long tail rotor drive shaft P/N 108-31 incorporating 2 1/2-inch long plug pinned in forward end of shaft at support location for cooling fan drive pulley,

  (2) Redesigned cooling fan drive pulley bearing support sleeve P/N 339-19,

  (3) New cooling fan drive pulley P/N 339-4,

  (4) New housing spacer P/N 339-18,

  (5) New pin retainer P/N 339-17,

  (6) New tail rotor shaft forward support bearing P/N 88505,

  (7) New cooling fan attach bolt AN 173-14A with AN 960-10 washer and AN 365-1032 nut. (Brantly Service Bulletin No. 2 covers this same subject.)

Revised April 17, 1965.

## 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/60-07-02/models.md
Every aircraft: https://openairdocs.org/ad/60-07-02/aircraft.md

Its text cites no advisory circulars or STCs.

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