Staging copy. The live site is at https://staging.data.eflight.com.
eFlight RegistryFAA data, updated daily
Electric and sustainable aircraft · FAA record as of September 25, 2026
N400EF

Bye Aerospace EFLYER 2 MODEL 10

Valid Electric airplaneElectricColorado

N400EF is a Bye Aerospace EFLYER 2 MODEL 10, a fixed-wing airplane with one motor powered by electric motors. It has 2 seats. It is registered to Bye Aerospace INC, a corporation in Englewood, Colorado. The registration is valid: it was issued on June 26, 2026 and expires on June 30, 2033. No airworthiness certificate is on file, which is normal for drones and for aircraft still being built or tested.

Bye Aerospace: eFlyer trainer, Denver, Colorado

Aircraft

Maker
Bye Aerospace (United States)
FAA spelling: BYE AEROSPACE INC
Model
EFLYER 2 MODEL 10
Serial number
0001
Type
Fixed-wing, single engine
Power
Electric, 1 motor
Seats
2
Year built
Not given
Transponder code
A4AD0B (octal 51126413)

Registration

Status
Valid registration
Certificate issued
June 26, 2026
Expires
June 30, 2033
Last FAA action
June 26, 2026
Airworthiness
None on file
FAA region
Northwest Mountain
FAA record id
01549424

Owner as the FAA publishes it

Name
Bye Aerospace INC
Type
Corporation
Address
7395 S Peoria St Ste 206
Englewood, CO 80112-4158

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Earlier use of this number 1

2005-07-13Gates Learjet Corp. 35A · Sale reported

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data