FAA airworthiness directive publication
AD 2021-08-19
2021-04-20 · Final rule publication · Federal Register document 2021-08225
This page records a selected historical publication. Its current legal status, applicability to an individual aircraft and compliance have not been determined. Consult the current FAA directive and aircraft configuration and maintenance records.
Scoped source model wording
Source publication: 2021-04-20 · Document 2021-08225. Independent observation edition: selected-ad-source-text-extension-3.0.0.
This observation records only the first explicit airplane subject. It is not a complete applicability model list. Later subjects, notes, serial numbers, seats, engines, parts and all other conditions remain in the full original clause below. Manufacturer identity remains unresolved; installation, aircraft applicability, compliance and current legal status have not been determined.
787-8, -9, and - 10
UNKNOWN model tokenization: no model keys were inferred from this cell or list.
Ranges, shorthand, broken tokens and parenthetical or slash names have not been expanded or resolved as aliases.
No source observation establishes aircraft applicability or compliance. See the complete original applicability clause and official source links below.
Applicability text in this publication
(c) Applicability
This AD applies to all The Boeing Company Model 787-8, -9, and -
10 airplanes, certificated in any category.
Effective-date text
This airworthiness directive (AD) is effective May 5, 2021.
Publication context
Historical effective date recorded in the publication: 2021-05-05. This date does not establish which directive controls today.
This publication records a replacement statement naming 2021-02-19. Later publications and current legal status have not been evaluated.
(b) Affected ADs
This AD replaces AD 2021-02-19, Amendment 39-21402 (86 FR 10171,
February 19, 2021) (AD 2021-02-19).
Publications named in this historical statement
These links follow header labels in explicit historical source statements. Each publication remains a separate dated source edition. They do not establish current legal status, manufacturer identity, installed configuration, aircraft applicability or compliance.
Official sources
Read the Federal Register HTML publication · Read the official PDF publication
Sources retrieved: HTML 2026-09-08; PDF 2026-09-08.
The displayed text comes from the HTML publication. Refer to the official documents for the original wording.
This selected source edition is not a complete list of current airworthiness directives. Referenced manufacturer service documents are not reproduced here.