ELECTRIC TRAINING AIRCRAFT
Established in February 2014, the eFlyer program was created by Bye Aerospace to produce the two seat “eFlyer”, and for it to be fully certified under the new FAR 23 Amendment 64, and bring it to market. We intend to serve general aviation by providing a clean, renewable energy, electric training aircraft. As of April 2021 we have over $1B in customer backlog value, split evenly between the eFlyer 2 and eFlyer 4. Check out the video of the eFlyer 2 prototype in flight below.
eFlyer 2
This two-seat aircraft will change the way pilots train. The cost-efficient aircraft will enable new pilots to train without prohibitive fuel costs.
- eFlyer 2™ was the world’s first FAA 14 CFR Part 23-Type Amendment 64-Certified Applicant for a “Normal Category” Electric Aircraft, (FAA application filed April 13, 2018)
- The eFlyer design is entirely new, from tip to tail
- Aerodynamic efficiency is over twice that of a typical legacy aircraft of similar size
- High overall propulsive system efficiency with high motor efficiency with low cooling drag
eFlyer 2 specs
Current as of April 2022
Component |
Supplier |
Description |
Electric motor |
Safran |
ENGINeUS TM 100 (air cooled) 110 kW (150HP) max rating |
Batteries |
To be announced |
High density lithium battery |
Structures |
To be announced |
Toray carbon composite system |
Parachute Recovery System |
ASR |
Soteria whole-aircraft emergency recovery parachute system |
Avionics |
Garmin |
G500 TXi |
Cabin Width |
46 inches |
Crew (instructor and pilot trainee) |
450 lbs |
Rate of Climb |
1,000 fpm |
Normal Speeds |
54-135 knots |
Range at 96 knots, 10,000 feet |
220 nm with VFR reserves |
Economy Cruise |
96 KTAS, 10,000 feet |
Flight Endurance (absolute) |
3 hours (at 73 knots) |
Stall Speed |
48 knots |
Maximum Altitude |
14,000 feet |
For more information on pricing, email: sales@byeaerospace.com
*This information may be incomplete and is subject to change
eFlyer 4 specs
Current as of April 2022
- The eFlyer 4 design is entirely new, from tip to tail
- Aerodynamic efficiency is over twice that of a typical legacy aircraft of similar size
- High overall propulsive system efficiency with high motor efficiency with low cooling drag
Cabin Width |
48 inches |
Payload |
860 lbs |
Rate of Climb |
1,000 fpm |
Normal Speeds |
61 knots to 200 knots |
VFR Range 10,000 feet |
320 nm single pilot |
Economy Cruise |
200 KTAS |
VFR Flight Endurance |
3 hours |
Stall Speed |
TBD |
Maximum Altitude |
17,500 feet |
Note: Performance metrics are projections only and subject to change.
eFlyer 800 specs
Current as of April 2022
- The eFlyer 800 design is entirely new aircraft, from tip to tail
- 8 seats (1 or 2 pilots, up to 6 business-class passengers) in business class comfort in the widest cabin in the turboprop class, and up to 12 seats in a high-density configuration.
- Aerodynamic efficiency is twice that of a typical legacy turboprop aircraft of similar size. High overall propulsive system efficiency with high motor efficiency with low cooling drag
- Two wing-mounted electric motors each with dual redundant motor windings
- Quad-redundant battery packs
- Potential features include:
- Emergency auto-landing system
- Intelligent algorithm ensuring envelope protection, terrain avoidance and routing for emergency auto-land
- Option for supplemental power solar cells
Cabin specs |
65 inches wide, 55 inches tall |
Crew |
1 or 2 pilots with 6 passengers |
Rate of climb |
2,500 fpm |
Range, max payload at normal cruise speed |
500 nm/1,540 lbs. |
Normal high-speed cruise |
320 knots |
Normal cruise |
255 knots |
Certified ceiling |
35,000 feet |
Note: Performance metrics are subject to change


Renders of eFlyer 4

Renders of eFlyer 800

eFlyer Market
Until the Covid-19 pandemic, demand for new airline pilots around the world had increased dramatically over requirements from 5 or 10 years ago. Due to the coronavirus impact on airline transportation, we believe this demand will be temporarily reduced for the next two to three years. However, over a longer 20-year timeframe, according to industry forecasts, an estimated 763,000 new commercial and airline pilots are needed. This requirement is over 4.5 times increase of the 165,000 airline pilots flying today.
Due to the age and operating expense of the fleet, the existing 230,000-unit General Aviation fleet is ripe for replacement. The majority of these aircraft were manufactured between 1960 and 1983 when production averaged over 10,000 units per year. Sales slumped in the early 1980’s due to market saturation, rising fuel costs and limited access to capital with high interest rates. According to the FAA and GAMA, in the U.S. there are approximately 11,000 trainers in use today that average 48-years old. These old, legacy aircraft are difficult and costly to maintain, burn expensive leaded aviation gasoline producing CO2, and are nearing obsolescence. With great operating cost and performance benefits, the all-electric eFlyer 2 and eFlyer 4 are designed to be ideal replacements for much of the General Aviation fleet.