The U.S. aircraft register, updated daily
Engines · turboprop · data as of October 5, 2026

Pratt & Whitney Canada PT6A-28

13 aircraft on the U.S. register carry a Pratt & Whitney Canada PT6A-28 engine, rated at about 680 horsepower. The Piper PA-31 Navajo and Chieftain is the model most often fitted with it (5 aircraft). The aircraft carrying it were built between 1970 and 1980.

The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Pratt & Whitney Canada PT6A-28 (2 codes). FAA spellings: PT6A-28 · PT6A-28.

Fitted to model families

Piper PA-31 Navajo and Chieftain5Beechcraft E-90 King Air E904Beechcraft A1002Beechcraft 651Pelegrin Northwest Llc LANCAIR EVOLUTION1

Piper PA-31 Navajo and Chieftain · Beechcraft E-90 King Air E90 · Beechcraft A100 · Beechcraft 65 · Pelegrin Northwest Llc LANCAIR EVOLUTION

Where they are owner's state

Delaware3Oklahoma2New Mexico2Virginia1Oregon1North Carolina1Massachusetts1Florida1California1

Kind of aircraft

Turboprops13 (100%)

When the aircraft were built by decade

024799197031980

What the FAA has certified, ordered and been told about the Pratt & Whitney Canada PT6A-28 the component layer

The design is held under 1 type certificate (E4EA, held by Pratt & Whitney Canada CORP.). The FAA has issued 11 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 11 airworthiness directives · newest first

2014-08-052014-11-05 · Reinforcement liner to the power turbine (PT) containment ring and, for certain PT containment rings,... · engine
2011-12-282011-25-12 · Sun gear · engine
2002-12-312002-23-13 · Turbine Exhaust Ducts · engine
1997-03-1497-04-12 · Compressor Bleed-off Valve · engine
1992-08-1792-15-11 · Compressor Delivery Air Line (P3) Filter Assembly · engine
1990-05-3090-12-05 · Engine Overhaul · engine

All orders naming the Pratt & Whitney Canada PT6A-28

Certificates and bulletins

E4EAType certificate held by Pratt & Whitney Canada CORP. · 54 models listed · revised June 16, 2021

Safety bulletins 1 · advice, not orders

2011-11-01NE-12-04 · Turbine/ Turboprop Engine: Reduction Gearbox

Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.

Connections how this engine series links to the rest of the register

Fitted to
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/pratt-whitney-canada-pt6a-28.json · about the eFlight graph.

Aircraft newest certificates first · 13

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N294ZP Piper
PA-31T
Fixed-wing, multi-engine Cumulus Aviation INC Trustee
Wilmington, Delaware
Standard 2026-08-14 ValidFAA registration status code V: Valid registration. All codes
N406RS Piper
PA-31T
Fixed-wing, multi-engine Aero South Florida INC
Deerfield Beach, Florida
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N111JA Beech
E-90
Fixed-wing, multi-engine Millennium Falcon 2020 LLC Trustee
Wilmington, Delaware
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N29M Beech
E-90
Fixed-wing, multi-engine Bluesky Geospatial LTD
North Adams, Massachusetts
Standard 2021-08-27 ValidFAA registration status code V: Valid registration. All codes
N444L Beech
E-90
Fixed-wing, multi-engine Pierwest Aviation LLC
Tulsa, Oklahoma
Standard 2021-02-17 ValidFAA registration status code V: Valid registration. All codes
N503AL Pelegrin Northwest Llc
LANCAIR EVOLUTION
Fixed-wing, single engine Pelegrin Northwest LLC
Bend, Oregon
Experimental 2020-10-27 ValidFAA registration status code V: Valid registration. All codes
N93VD Beech
A100
Fixed-wing, multi-engine Absl Construction
Hayward, California
Standard 2019-11-12 ValidFAA registration status code V: Valid registration. All codes
N528CH Piper
PA-31T
Fixed-wing, multi-engine Individual owner
New Mexico
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N982K Piper
PA-31T
Fixed-wing, multi-engine Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2017-02-22 ValidFAA registration status code V: Valid registration. All codes
N497WW Piper
PA-31T
Fixed-wing, multi-engine Win Win Aviation INC
Wake Forest, North Carolina
Standard 2014-06-10 ValidFAA registration status code V: Valid registration. All codes
N219WW Beech
A100
Fixed-wing, multi-engine Tj Air Holdings INC Trustee
Wilmington, Delaware
Standard 2013-08-02 ValidFAA registration status code V: Valid registration. All codes
N975SP Beech
E-90
Fixed-wing, multi-engine Sky Power LLC
Albuquerque, New Mexico
Standard 2013-04-11 ValidFAA registration status code V: Valid registration. All codes
N96Y Beech
65-A90-4
Fixed-wing, multi-engine Dynamic Avlease INC
Bridgewater, Virginia
Restricted 1999-03-12 ValidFAA registration status code V: Valid registration. All codes

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.