# 2025-21090: Luxury Jets' GPS Basically Says 'Good Luck Landing, Buddy'

2025-21090, Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes, is a Federal Register rule from Transportation Department, Federal Aviation Administration published 2025-11-25, effective 2025-12-30 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2025-21090
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-21090
- Title: Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
- Type: Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 90 FR 53208
- Published: 2025-11-25
- Effective: 2025-12-30
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: 2120-AA64
- Last updated: 2026-06-11

## In one line

Luxury Jets' GPS Basically Says 'Good Luck Landing, Buddy'

## Summary

Pilatus PC-24 airplane owners need to update their flight manuals by December 30, 2025, to fix a flight director error during landing. This quick fix changes the Abnormal Procedures Section to keep flights safe without big costs or downtime. If you fly a PC-24, this update is a must to keep your plane flying smoothly and safely!

## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Pilatus Aircraft Ltd. (Pilatus) Model PC-24 airplanes. This AD was prompted by a report of an inaccurate flight director calculation on approach. This AD requires incorporating a temporary revision into the existing airplane flight manual (AFM) for the affected airplanes, which revises the Abnormal Procedures Section. The FAA is issuing this AD to address the unsafe condition on these products.

## Effects PRIA read

- PC-24 AFM Update Required by Dec 30, 2025: cost, low. If you operate a Pilatus Model PC-24, you must incorporate a temporary revision into your airplane flight manual (AFM) that revises the Abnormal Procedures Section by December 30, 2025. The rule adopts EASA AD 2024-0240 and makes this AFM-TR mandatory to address an inaccurate flight director calcul…
- Self-Perform AFM Revision Saves Operator Cost: benefit, low. The AD allows the owner/operator (pilot) holding at least a private pilot certificate to perform the AFM revision and enter compliance in aircraft records per 14 CFR 43.9(a) and 91.417(a)(2)(v). The FAA estimates this affects 150 U.S.-registered PC-24 airplanes at 1 work-hour x $85 per hour, a $85…
- Fixes Flight Director Error to Protect Safety: benefit, medium. The AD addresses a reported inaccurate flight director calculation on approach (APEX Build 5.3 and below) that can cause heading splits and lateral offsets to the desired approach course. The required AFM revision aims to prevent increased pilot workload and a reduction in safety margins caused by…

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## Sources
- [2025-21090 on federalregister.gov](https://www.federalregister.gov/documents/2025/11/25/2025-21090/airworthiness-directives-pilatus-aircraft-ltd-airplanes)
- [2025-21090 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-11-25/pdf/2025-21090.pdf)

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- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-21090 (as of 2026-06-11).