The U.S. aircraft register, updated daily
Engines · turboshaft · data as of October 7, 2026

Honeywell AL5512

5 aircraft on the U.S. register carry a Honeywell AL5512 engine, rated at about 4075 horsepower. The Boeing-Vertol 234 is the model most often fitted with it (5 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 Honeywell AL5512. FAA spelling: AL5512.

Fitted to model families

Boeing-Vertol 2345

Boeing-Vertol 234

Where they are owner's state

Oregon3Utah2

Kind of aircraft

Helicopters5 (100%)

When the aircraft were built by decade

0123441980

What the FAA has certified, ordered and been told about the Honeywell AL5512 the component layer

The design is held under 1 type certificate (E4NE, held by Honeywell Aerospace US LLC). No FAA order in the current files names this engine series.

Certificates and bulletins

E4NEType certificate held by Honeywell Aerospace US LLC · 2 models listed · revised March 27, 2026

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
  • Oregon 3 of these aircraft
  • Utah 2 of these aircraft
Biggest operators

These connections as data: /graph/engine/honeywell-al5512.json · about the eFlight graph.

Aircraft newest certificates first · 5

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N237CH Boeing-Vertol
234
Rotorcraft Bank of Utah Trustee
Salt Lake City, Utah
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N238CH Boeing-Vertol
234
Rotorcraft Bank of Utah Trustee
Salt Lake City, Utah
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N235CH Boeing-Vertol
234LR
Rotorcraft Columbia Helicopters INC
Aurora, Oregon
Standard 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N246CH Boeing-Vertol
234LR
Rotorcraft Columbia Helicopters INC
Aurora, Oregon
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N239CH Boeing-Vertol
234
Rotorcraft Columbia Helicopters INC
Aurora, Oregon
Experimental 2017-05-04 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 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.