The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Howell Harley L

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications. FAA spelling: Howell Harley L.

Approved modifications 2 · newest first

1989-04-25SA4727NM · Installation of a new gull-wing canopy and canopy locking system. · GC-1B
1978-11-29SA677NW · Installation of a Continental engine and McCauley propeller · GC-1B

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.