The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Comet 7E

2 aircraft on the U.S. register carry a Comet 7E engine, rated at about 165 horsepower. The Fairchild KR-34 is the model most often fitted with it (1 aircraft). The aircraft carrying it were built between 1929 and 1948.

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 Comet 7E. FAA spelling: 7E.

Fitted to model families

Fairchild KR-341Piper PA-151

Fairchild KR-34 · Piper PA-15

Where they are owner's state

Florida1Alaska1

Kind of aircraft

Piston singles2 (100%)

When the aircraft were built by decade

000111192011940

What the FAA has certified, ordered and been told about the Comet 7E the component layer

The design is held under 1 type certificate (ATC 47 Comet, held by Comet Engine Corporation). No FAA order in the current files names this engine series.

Certificates and bulletins

ATC 47 CometType certificate held by Comet Engine Corporation · 1 model listed

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

These connections as data: /graph/engine/comet-7e.json · about the eFlight graph.

Aircraft newest certificates first · 2

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N4177H Piper
PA-15
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N633E Fairchild
KR-34B2
Fixed-wing, single engine Pearlman Aircraft CO
Orlando, Florida
Standard 1996-11-27 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.