EASA Regulations for Airbus Helicopters EC135

49 airworthiness directives and regulations affecting Airbus Helicopters EC135.

EASA AD 2019-0087-E

Apr 24, 2019

Rotors Flight Control – Main Rotor Actuator Single-Axis Actuators – Inspection / Replacement

EASA Airworthiness Directive 2019-0087-E is an emergency directive addressing Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It mandates inspection and potential replacement of specific main rotor actuator single-axis actuators that have accumulated six years or more since manufacture or last overhaul. The directive aims to detect corrosion and prevent actuator tie bar failure that could lead to loss of helicopter control.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters EC635

EASA AD 2018-0284

Dec 20, 2018

Rotors Flight Control – Main Rotor Actuator – Inspection

EASA Airworthiness Directive 2018-0284 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It mandates a one-time inspection of the main rotor actuator nuts on specified part numbers to detect cracks and displacement that could impair flight control. The directive applies to all variants and serial numbers of these helicopter models.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters EC635

EASA AD 2018-0210-E

Sep 25, 2018

Equipment & Furnishings — Hoist Carrier Assembly — Inspection

EASA Airworthiness Directive 2018-0210-E is an emergency directive addressing the inspection of the hoist carrier assembly on Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models, excluding the P3H and T3H variants. It targets Goodrich electrical hoists with specific part numbers installed on these helicopters to ensure correct assembly and prevent potential safety hazards.

Airworthiness Directive
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters EC635

EASA AD 2011-0168R1

Mar 23, 2018

Lights — Instrument Lighting Display Brightness — Modification

EASA Airworthiness Directive 2011-0168R1 is a regulatory update addressing instrument lighting display brightness issues on Airbus Helicopters Deutschland GmbH EC 135, EC 635, and MBB-BK117 C-2 helicopters equipped with optional night vision goggle (NVG) systems. The directive mandates modifications to the electrical wiring in the overhead panel to prevent overheating of diodes in the NVG system, which can cause sudden maximum brightness of critical flight displays. This AD ensures continued safe operation by correcting a lighting system fault that could impair pilot visibility.

Airworthiness Directive
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters MBB-BK 117
  • Airbus Helicopters EC 135
  • Airbus Helicopters EC 635
  • Airbus Helicopters MBB-BK117 C-2

EASA AD 2018-0063

Mar 22, 2018

Rotors Flight Control — Cyclic Stick — Modification

EASA Airworthiness Directive 2018-0063 is an official safety directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It addresses a flight control system issue related to the cyclic stick on these helicopters, specifically those equipped with autopilot and within certain serial number ranges. The directive mandates a modification to improve flight safety by installing a weight compensation for the cyclic stick.

Airworthiness Directive
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters EC635

EASA AD 2017-0243

Dec 6, 2017

Time Limits / Maintenance Checks – Airworthiness Limitations – Amendment

EASA Airworthiness Directive 2017-0243 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It mandates compliance with updated airworthiness limitations and maintenance tasks as specified in the Airbus Helicopters EC135 Master Servicing Manual Chapter 04, Revision 23. The directive ensures continued airworthiness by enforcing life limits and maintenance intervals for critical components including the tail rotor hub body.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters EC635

EASA SIB 2010-22

Jul 30, 2010

Crash Position Indicator CPI 503 series Emergency Locator Transmitter (ELT) - Limited Deployment Altitude

EASA Safety Information Bulletin SIB No. 2010-22 addresses the limited deployment altitude of the Crash Position Indicator CPI 503 series Emergency Locator Transmitters (ELTs) installed on various helicopter models including Eurocopter EC 155 B1, EC 225 LP, AS 332 L1/L2, AS 365 N2/N3, Eurocopter Deutschland EC 135 series, Agusta Westland A109 series, AB139, AW139, and Sikorsky S-61N, S-76 series, and S-92A helicopters. The bulletin highlights that these ELTs meet UK CAA specifications but do not fully comply with the JTSO/ETSO-2C126 EUROCAE ED-62 impact test criteria when deployed from high altitudes. A new model, P/N 503-16HT, has been developed to address this limitation.

Safety Information Bulletin
  • Airbus Helicopters EC155 B1
  • Airbus Helicopters EC225 LP
  • Airbus Helicopters AS332 L1
  • Airbus Helicopters AS332 L2
  • Airbus Helicopters AS365 N2
  • Airbus Helicopters AS365 N3
  • Airbus Helicopters EC135
  • AgustaWestland A109
  • AgustaWestland AB139
  • AgustaWestland AW139
  • Sikorsky S-61N
  • Sikorsky S-76
  • Sikorsky S-92A

EASA SIB 2009-11

Apr 24, 2009

EC135 & EC635 - Operation with Emergency Flotation System ARMED

EASA Safety Information Bulletin 2009-11 is an advisory document addressing the operation of EC135 and EC635 helicopters equipped with an emergency flotation system. It highlights the need to follow specific procedures when the flotation system is set to ARMED to prevent unintentional release during flight. The bulletin references Eurocopter Deutschland Alert Service Information EC135-A108 Revision 01 for detailed guidance.

Safety Information Bulletin
  • Airbus Helicopters EC135
  • Airbus Helicopters EC635

EASA SIB 2008-45

May 27, 2008

WITHDRAWN - SEE EASA AD 2010-0058

EASA Safety Information Bulletin 2008-45 is an informational bulletin addressing incorrect fixed bearings in the main rotor and tail rotor flight control levers of EC135, EC635, and MBB-BK 117C-2 helicopters. The bulletin highlights inspection, repair, and replacement requirements as per Luftfahrt-Bundesamt Germany Airworthiness Directives and Eurocopter Deutschland GmbH Alert Service Bulletins. This bulletin is withdrawn and superseded by EASA Airworthiness Directive 2010-0058.

Safety Information Bulletin
  • Airbus Helicopters EC135
  • Airbus Helicopters EC635
  • MBB-BK 117C-2