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

Pratt & Whitney Canada PT6A-36

4 aircraft on the U.S. register carry a Pratt & Whitney Canada PT6A-36 engine, rated at about 750 horsepower. The Beechcraft C-99 is the model most often fitted with it (4 aircraft). The aircraft carrying it were built between 1981 and 1982.

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-36. FAA spelling: PT6A-36.

Fitted to model families

Beechcraft C-994

Beechcraft C-99

Where they are owner's state

Alaska3Florida1

Kind of aircraft

Turboprops4 (100%)

When the aircraft were built by decade

0123441980

What the FAA has certified, ordered and been told about the Pratt & Whitney Canada PT6A-36 the component layer

The design is held under 1 type certificate (E4EA, held by Pratt & Whitney Canada CORP.). The FAA has issued 7 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 7 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
1980-04-1880-08-12 · Fuel Pump Drive Coupling Splines · engine

All orders naming the Pratt & Whitney Canada PT6A-36

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-36.json · about the eFlight graph.

Aircraft newest certificates first · 4

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N993AK Beech
C-99
Fixed-wing, multi-engine Lake Clark Air INC
Ports Alsworth, Alaska
Standard 2017-12-22 ValidFAA registration status code V: Valid registration. All codes
N991AK Beech
C-99
Fixed-wing, multi-engine Lake Clark Air INC
Port Alsworth, Alaska
Standard 2015-12-08 ValidFAA registration status code V: Valid registration. All codes
N992AK Beech
C-99
Fixed-wing, multi-engine Lake Clark Air INC
Port Alsworth, Alaska
Standard 2014-11-04 ValidFAA registration status code V: Valid registration. All codes
N225BH Beech
C-99
Fixed-wing, multi-engine UAS Transervices INC
Boca Raton, Florida
Standard 2007-04-30 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.