# 2026-19094: Pratt & Whitney Engines Face Mandatory Wear-and-Tear Checks

2026-19094, Airworthiness Directives; Pratt & Whitney Engines, is a Federal Register proposed rule from Transportation Department, Federal Aviation Administration published 2026-09-17, effective The FAA must receive comments on this proposed AD by October 19, 2026.; PRIA reads it as touching household money (as of 2026-09-24).

- Canonical: https://policyrisk.com/federal-register/2026-19094
- As of: 2026-09-24
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-19094
- Title: Airworthiness Directives; Pratt & Whitney Engines
- Type: Proposed Rule
- Agencies: Transportation Department; Federal Aviation Administration
- Citation: 91 FR 58823
- Published: 2026-09-17
- Effective: The FAA must receive comments on this proposed AD by October 19, 2026.
- Comments close: 2026-10-19
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 2120-AA64
- Last updated: 2026-09-24

## In one line

Pratt & Whitney Engines Face Mandatory Wear-and-Tear Checks

## Summary

The FAA wants to keep Pratt & Whitney engines safe by checking certain parts for wear and damage. If problems show up, those parts must be fixed or replaced. This affects many PW engine models and could mean regular inspections and part swaps, with comments open until October 19, 2026.

## Abstract

The FAA proposes to adopt a new airworthiness directive (AD) for all Pratt & Whitney (PW) Model PW1519G, PW1521G, PW1521GA, PW1521G- 3, PW1524G, PW1524G-3, PW1525G, PW1525G-3, PW1919G, PW1919G-RC, PW1921G, PW1921G-RC, PW1922G, PW1923G, and PW1923G-A engines with a certain high-pressure compressor (HPC) module installed. This proposed AD was prompted by six reports of clashing found on either the HPC 2nd stage rotor or 3rd stage rotor caused by contact with the corresponding HPC variable stator vanes (VSV). This proposed AD would require initial and repetitive borescope inspections (BSIs) of the HPC 1st stage, 2nd stage, and 3rd stage rotor rear rim surfaces for evidence of wear, scratching, or contact with the corresponding HPC VSV inner locating ring and, depending on the results, removal from service and replacement. This proposed AD would also require replacement of the HPC VSV bushing set as terminating action to the initial and repetitive BSIs of the HPC 1st stage, 2nd stage, and 3rd stage rotor rear rim surfaces. The FAA is proposing this AD to address the unsafe condition on these products.

## Effects PRIA read

- Required initial and repetitive inspections: cost, medium. If your airplane has one of the listed Pratt & Whitney PW1500G or PW1900G engines with the affected HPC module serial numbers, you must do an initial borescope inspection (BSI) of the HPC 1st, 2nd, and 3rd stage rotor rear rim surfaces before accumulating 8,000 flight hours or within 1,000 flight h…
- Mandatory VSV bushing set replacement: cost, high. At the next HPC front case split flange separation after the AD effective date, you must replace the HPC variable stator vane (VSV) bushing set with parts eligible for installation. The FAA estimates replacement will take 1 work-hour plus parts, with a parts cost of $20,300 and a total cost per eng…
- Expensive rotor replacements if damage found: cost, high. If a BSI finds evidence of contact/damage, you must remove and replace the damaged HPC rotor(s) before further flight. The FAA lists estimated on‑condition total costs per engine of $316,050 for HPC 1st stage rotor replacement, $301,550 for HPC 2nd stage rotor replacement, and $258,950 for HPC 3rd…
- Who must comply and who is excluded: cost, low. This proposed AD applies only to the listed PW Model PW1500G and PW1900G engines that have an HPC module with serial numbers listed in Table 1 of the Pratt & Whitney Alert Service Bulletins dated July 13, 2026. The AD does not apply to engines that have already incorporated PW Service Bulletin PW10…

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## Sources
- [2026-19094 on federalregister.gov](https://www.federalregister.gov/documents/2026/09/17/2026-19094/airworthiness-directives-pratt-and-whitney-engines)
- [2026-19094 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-09-17/pdf/2026-19094.pdf)

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

Source: PRIA, https://policyrisk.com/federal-register/2026-19094 (as of 2026-09-24).