Lycoming VO-435-A1F
15 aircraft on the U.S. register carry a Lycoming VO-435-A1F engine, rated at about 250 horsepower. The Bell 47 is the model most often fitted with it (9 aircraft). The aircraft carrying it were built between 1954 and 2018.
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 Lycoming VO-435-A1F. FAA spelling: VO-435-A1F.
Fitted to model families
Bell 47 · Texas Helicopter Corp OH-13 · Bell-Continental Copters Inc 47G2 · Cook Timothy HUMMER 260L · St Peter Norman HUMMINGBIRD
Where they are owner's state
Kind of aircraft
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming VO-435-A1F the component layer
The design is held under 1 type certificate (E-279, held by Lycoming Engines). The FAA has issued 8 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 9 failure reports with the FAA since 1995, 9 of them in the last ten years.
FAA orders 8 airworthiness directives · newest first
Failure reports 9 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Latest reports
Certificates and bulletins
Safety bulletins 2 · advice, not orders
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
- Bell 47 9 with this engine series
- Texas Helicopter Corp OH-13 3 with this engine series
- Wyoming 2 of these aircraft
- Texas 2 of these aircraft
- Pennsylvania 2 of these aircraft
- Tennessee 1 of these aircraft
- Oklahoma 1 of these aircraft
- Triple F Flying INC 1 of these aircraft
- Southern Aircraft Consultancy INC Trustee 1 of these aircraft
- Hhi Farms LLC 1 of these aircraft
- Hendrickson Flying Service INC 1 of these aircraft
- FAA orders naming the Lycoming VO-435-A1F 8 airworthiness directives
- Failure reports on the Lycoming VO-435-A1F 9 reports since 1995
These connections as data: /graph/engine/lycoming-vo-435-a1f.json · about the eFlight graph.
Aircraft newest certificates first · 15
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N9595B | Bell 47G-3B-1 |
Rotorcraft | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N5179 | St Peter Norman HUMMINGBIRD |
Rotorcraft | Individual owner Ohio |
Experimental | 2025-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N955B | Bell 47G |
Rotorcraft | Individual owner Oklahoma |
Standard | 2024-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N73249 | Bell 47G-3B |
Rotorcraft | English Air Service LLC Georgetown, Texas |
Restricted | 2021-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N1001F | Texas Helicopter Corp OH-13H/M74A |
Rotorcraft | AG Air INC Cheyenne, Wyoming |
Restricted | 2019-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N777TC | Cook Timothy HUMMER 260L |
Rotorcraft | Individual owner Tennessee |
Experimental | 2018-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N50HB | Bell 47G-3B |
Rotorcraft | Individual owner California |
Multiple | 2018-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N1201Y | Texas Helicopter Corp OH-13H/M74A |
Rotorcraft | Hhi Farms LLC Hamilton, Michigan |
Restricted | 2017-11-14 | ValidFAA registration status code V: Valid registration. All codes |
| N73974 | Bell 47G-2A-1 |
Rotorcraft | Triple F Flying INC Benton, Pennsylvania |
Restricted | 2016-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N100HT | Bell 47G-2 |
Rotorcraft | Individual owner Arizona |
Standard | 2016-07-18 | ValidFAA registration status code V: Valid registration. All codes |
| N51859 | Texas Helicopter Corp OH-13E/M74 |
Rotorcraft | Individual owner Mississippi |
Restricted | 2012-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N9021R | Bell-Continental Copters Inc 47G2 |
Rotorcraft | Sky Horse Helicopters INC Brady, Texas |
Standard | 2011-06-09 | ValidFAA registration status code V: Valid registration. All codes |
| N7574 | Bell 47G-2A |
Rotorcraft | Charles Farms INC Lancaster, Pennsylvania |
Standard | 2007-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N64702 | Bell 47G-2A |
Rotorcraft | Hendrickson Flying Service INC Rochelle, Illinois |
Multiple | 2003-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N53997 | Bell 47G-2A-1 |
Rotorcraft | Individual owner Indiana |
Standard | 1984-07-20 | 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.