FAA airworthiness directive publication

AD 2017-10-20

2017-05-25 · Final rule publication · Federal Register document 2017-10407

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.

Literal source items with unresolved model wording

Source publication: 2017-05-25 · Document 2017-10407. Independent observation edition: selected-ad-source-text-extension-4.0.0.

These are source fragments, not a complete applicability model list. Complete labels and unknown items are kept separately. Manufacturer identity, installation, aircraft applicability, compliance and current legal status remain undetermined; every original condition is retained below.

PA-31, PA-
31-300, and PA-31-325

```
PA-31
```
Complete literal source label: PA-31.
```
PA-
31-300
```
UNKNOWN complete model token: this range, short suffix, prefix/nickname, parenthetical/slash, broken line or unclear cell was not expanded, repaired or resolved as an alias.
```
PA-31-325
```
Complete literal source label: PA-31-325.

PA-31-350

```
PA-31-350
```
Complete literal source label: PA-31-350.

The complete original applicability clause below retains every serial, date, part, service-document and configuration condition. None has been evaluated for an aircraft. Comparison and report links remain discovery only; these source observations do not alter earlier reports or establish AD applicability or compliance.

Applicability text in this publication

(c) Applicability

    This AD applies to Piper Aircraft, Inc. Navajo Models PA-31, PA-
31-300, and PA-31-325, serial numbers 31-2 through 31-900, and 31-
7300901 through 31-8312019; and Chieftain/T-1020 Models PA-31-350, 
serial numbers 31-5001 through 31-5004, and 31-7305005 through 31-
8553002, certificated in any category.
    Note 1 to paragraph (c) of this AD: The Model PA-31 may also be 
identified as a PA-31-310 even though the PA-31-310 is not a model 
recognized by the Federal Aviation Administration (FAA) on the type 
certificate data sheet.

Effective-date text

This AD is effective June 29, 2017.

Publication context

Historical effective date recorded in the publication: 2017-06-29. This date does not establish which directive controls today.

The publication records no affected prior directives in its Affected ADs paragraph. This says nothing about the number of directives applicable to an aircraft.

(b) Affected ADs

    None.

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.