EASA Regulations for Airbus Helicopters MBB-BK 117 D-2

3 airworthiness directives and regulations affecting Airbus Helicopters MBB-BK 117 D-2.

Get the next one by email

New ADs and bulletins for Airbus Helicopters MBB-BK 117 D-2, summarized like the ones below, every Monday.

EASA PAD 26-121

Oct 8, 2026

Equipment / Furnishings – System Interface Unit – Replacement

EASA Airworthiness Directive Proposal 26-121 is a regulatory document addressing the replacement of the System Interface Unit (SIU) on Airbus Helicopters Deutschland GmbH MBB-BK117 D-2 (except D-2m variant) and D-3 helicopters. The directive applies to SIU Manufacturer Part Number 503-24-6-G installed on helicopters with serial numbers 20001 to 20360 and 21001 to 21999. It aims to ensure continued airworthiness by mandating replacement of affected SIUs based on their time since manufacture or last overhaul.

Proposed AD
  • Airbus Helicopters MBB-BK 117
  • Airbus Helicopters MBB-BK 117 D-2
  • Airbus Helicopters MBB-BK 117 D-3
  • Airbus Helicopters MBB-BK117 D-2
  • Airbus Helicopters MBB-BK117 D-3

EASA AD 2018-0163

Jul 25, 2018

Rotorcraft Flight Controls – Co-pilot Collective Lever Wire Harness – Inspection

EASA Airworthiness Directive 2018-0163 is an airworthiness directive issued for Airbus Helicopters Deutschland GmbH MBB-BK 117 D-2 helicopters. It mandates inspection of the co-pilot collective lever wire harness and its routing to detect and correct any chafing or incorrect routing that could cause electrical short circuits and uncommanded system activations.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters MBB-BK 117
  • Airbus Helicopters MBB-BK 117 D-2

EASA AD 2017-0238

Nov 30, 2017

Superseded by EASA AD 2019-0208

EASA Airworthiness Directive 2017-0238 is an airworthiness directive issued for Airbus Helicopters Deutschland GmbH MBB-BK 117 D-2 helicopters of all serial numbers. It addresses an issue related to erroneous low rotor RPM indication during One Engine Inoperative (OEI) conditions. The directive mandates updates to the Rotorcraft Flight Manual emergency procedures to mitigate risks associated with this condition.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters MBB-BK 117
  • Airbus Helicopters MBB-BK 117 D-2