EASA Regulations for Air Comm Corporation CAA UK AAN 25273

3 airworthiness directives and regulations affecting Air Comm Corporation CAA UK AAN 25273.

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New ADs and bulletins for Air Comm Corporation CAA UK AAN 25273, summarized like the ones below, every Monday.

EASA AD US-2021-24-15

Dec 16, 2021

Tail Rotor Drive - Oil Cooler Blower Shaft Drive Ring Spline Teeth and Mating Area Spline Teeth - Inspection

Federal Register Volume 86, Number 237, Final Rule FAA Airworthiness Directive 2021-24-15 addresses Bell Textron Canada Limited Model 206L-1, 206L-3, and 206L-4 helicopters equipped with certain Air Comm Corporation air conditioning systems. This directive mandates inspection of the oil cooler blower shaft's drive ring spline teeth and mating spline teeth for deformation and fretting. It targets helicopters with specific Supplemental Type Certificate (STC) air conditioning system part numbers installed.

Airworthiness Directive
  • Air Comm Corporation CAA UK AAN 25273
  • Bell 206
  • Bell Textron Canada 206L-1
  • Bell Textron Canada 206L-3
  • Bell Textron Canada 206L-4

EASA AD CF-2020-15

May 14, 2020

Tail Rotor Drive — Failure of Tail Rotor Drive Shaft Coupling Bolted Connections

Canadian Airworthiness Directive CF-2020-15 addresses the failure risk of tail rotor drive shaft coupling bolted connections on Bell Textron Canada Limited model 206 series helicopters, including 206, 206A, 206B, and 206L variants. The directive mandates replacement of certain MS21042-series nuts with more reliable NAS9926-series nuts or alternate parts to prevent loss of tail rotor drive and potential loss of helicopter control. It also covers specific configurations affected by Supplemental Type Certificates SH2750NM and SH99-202 and provides tailored corrective actions for different helicopter groups.

Airworthiness Directive
  • Air Comm Corporation CAA UK AAN 25273
  • Bell 206
  • Bell 206A
  • Bell 206B
  • Bell 206L

EASA AD US-2018-25-17

Jan 7, 2019

Air Conditioning - Electrical Connectors - Replacement

Airworthiness Directive 2018-25-17 is a final rule issued by the FAA addressing Air Comm Corporation air conditioning systems installed on various Airbus Helicopters models including AS350 series and EC130B4, as well as Bell 206 and 407 series helicopters. The directive mandates the replacement of certain electrical connectors in these air conditioning systems to prevent overheating. It applies to specific Air Comm part numbers installed on these helicopters.

Airworthiness Directive
  • Air Comm Corporation CAA UK AAN 25273
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Bell 206
  • Bell 407
  • Airbus Helicopters AS350
  • Airbus Helicopters EC130B4