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Airworthiness Directive

AD 2020-21-23 85 FR 69140 Active

Federal Aviation Administration · 14 CFR part 39

Unsafe condition: improperly manufactured horizontal stabilizer rear attachment bolts.

Federal Register (opens in a new tab)FAA DRS (opens in a new tab)

FR document
2020-24047
Amendment
39-21296
Published
2020-11-02
Effective
2020-12-07
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2020-21-23 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

This page is a reference Record, not an airworthiness or compliance determination. Official FAA and manufacturer sources control over our restatement, subject to governing law. Check applicability, current requirements and incorporated documents before acting. The owner or operator remains responsible for airworthiness and required records under 14 CFR 91.403 and 91.417, as applicable. Terms of Use: /terms.

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AD

2020-21-23

FR doc 2020-24047 · 85 FR 69140

AD 2020-21-23Published 2020-11-02Effective 2020-12-07

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Unsafe condition: improperly manufactured horizontal stabilizer rear attachment bolts.

Full official abstract

The FAA is adopting a new airworthiness directive (AD) for Pilatus Aircraft Ltd. Models PC-12, PC-12/45, PC-12/47, and PC-12/47E airplanes. This AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as improperly manufactured horizontal stabilizer rear attachment bolts. If not corrected, this could lead to fatigue failure of the bolts and loss of airplane control. The FAA is issuing this AD to address the unsafe condition on these products.

More directives for Pilatus PC-12

  1. AD 2026-15-12 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes Effective 2026-10-02
  2. AD 2026-15-07 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes Effective 2026-09-03
  3. AD 2026-12-01 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes Effective 2026-07-14
  4. AD 2026-08-11 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes Effective 2026-05-11
  5. AD 2024-08-07 Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes Effective 2024-06-03

All Pilatus PC-12 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index