# Special Conditions: Pratt and Whitney Canada, PW220A; New Engine Rating: Idle-Cruise Regime

**Action Urgency Score:** 20/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Federal Aviation Administration |
| Type | Proposed rule |
| Action | Notice of proposed special conditions. |
| Published | 2026-08-25 |
| Comments close | 2026-10-09 |
| Significant | No |
| CFR parts | 14 CFR 33 |
| Summary | This action proposes special conditions for the Pratt and Whitney Canada (P&WC) aircraft engine Model PW220A. This engine will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for engines. This design feature will incorporate an unusual power rating structure that includes an "idle cruise regime" (ICR). The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These proposed special conditions contain the additional safety standards that the Administrator con |
| Document number | 2026-17298 |

## Why this score


Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/08/25/2026-17298/special-conditions-pratt-and-whitney-canada-pw220a-new-engine-rating-idle-cruise-regime). Last refreshed: 2026-11-04T21:40:49.974Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.