EASA Regulations for Textron Aviation 421B

1 airworthiness directives and regulations affecting Textron Aviation 421B.

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New ADs and bulletins for Textron Aviation 421B, summarized like the ones below, every Monday.

EASA AD US-2018-03-03R1

May 9, 2018

Wings - Lower Forward Carry Through Spar Cap - Inspection / Replacement

The Federal Aviation Administration's Airworthiness Directive 2018-03-03 R1 revises the original AD 2018-03-03 for certain Textron Aviation Inc. Models 401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A, 421, 421A, 421B, 421C, and 425 airplanes. This directive addresses the inspection and replacement of the left and right forward lower carry through spar caps to detect and correct cracks caused by metal fatigue. The AD aims to prevent potential failure of the spar cap during flight, which could lead to loss of control.

Airworthiness Directive
  • Textron Aviation 401
  • Textron Aviation 402
  • Textron Aviation 411
  • Textron Aviation 414
  • Textron Aviation 421
  • Textron Aviation 425 (Conquest)
  • Textron Aviation 401A
  • Textron Aviation 401B
  • Textron Aviation 402A
  • Textron Aviation 402B
  • Textron Aviation 402C
  • Textron Aviation 411A
  • Textron Aviation 414A
  • Textron Aviation 421A
  • Textron Aviation 421B
  • Textron Aviation 421C
  • Textron Aviation 425