EASA AD US-2020-24-04: Superseded by FAA AD 2023-19-09

What to do

Operators of Boeing 787-8, 787-9, and 787-10 airplanes must revise the Operating Procedures chapter of their existing AFM within 14 days of December 18, 2020, to incorporate the specified procedures for localizer approach monitoring and go-around actions. The revision can be accomplished by inserting the provided figure into the AFM. Alternative methods of compliance may be approved by the FAA Seattle ACO Branch if requested.

Summary

FAA Airworthiness Directive 2020-24-04 is a final rule correction applying to all Boeing 787-8, 787-9, and 787-10 airplanes. It addresses errors in the original directive related to references in the airplane flight manual (AFM) that must be revised to ensure proper autopilot flight director system operation during localizer-based approaches. The directive mandates updating the Operating Procedures chapter of the AFM to include specific procedures for monitoring localizer capture and executing go-arounds if necessary.

What changed

This document corrects errors in the original FAA Airworthiness Directive 2020-24-04 regarding the location and headings of the AFM text to be revised. Specifically, it clarifies that the AFM revisions should be made in the Operating Procedures chapter rather than the Limitations section, and corrects the heading from 'Operating Instructions' to 'Autopilot Flight Director System–Operating Instructions'. No other changes to the directive were made.

Why it matters

The correction ensures that operators and maintenance personnel update the correct sections of the AFM, which is critical for safe autopilot operation during approaches using localizer navigation aids. Proper adherence prevents potential localizer overshoot and uncontrolled flight into terrain caused by autopilot failures. Accurate AFM revisions support compliance and enhance flight safety for Boeing 787 operators.

What to do

Summary

What changed

Why it matters

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