Recommendation R20050014

Recommendation issued to: CASA

Recommendation details
Output No: R20050014
Date issued: 22 December 2005
Safety action status:
Background: Why this Recommendation was developed

Output text

Safety Recommendation

The Australian Transport Safety Bureau recommends that the Civil Aviation Safety Authority alert Australian operators of Kawasaki BK117 B-2 helicopter to the discrepancy with respect to the procedure for adjusting the collective pitch settings in the maintenance manual.

Initial response
Date issued: 02 March 2006
Response from: CASA
Action status: Closed - Accepted
Response text:

On 22 December 2006, CASA wrote to all Kawasaki BK 117 B-2 owners and operators and recommended that pending advice from the manufacturer, Australian operators of the BK 117 B-2 should:

  • reduce expose to conditions of high density altitude and atmospheric turbulence, especially if the aircraft is at high-gross weight; and
  • if such conditions are encountered, reduce airspeed and torque settings while hand flying the aircraft with SAS [Stability Augmentation System] mode engaged.

In addition to this advice, CASA provided owners and operators with an overview of the incident involving VH-IME, which occurred on 7 December 2005 (occurrence 200506614). The Authority's correspondence also noted that according to the ATSB report, Kawasaki Heavy Industries would amend the BK 117 B-2 maintenance manual.

Last update 12 February 2014