The U.S. aircraft register, updated daily
FAA orders · emergency airworthiness directive · historical

2018-15-51: Tail Rotor Gearbox

Emergency order 2018-15-51 is an airworthiness directive. The FAA's subject line: Tail Rotor Gearbox. It names Bell 429: about 175 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: rotorcraft systems.

What it applies to as the FAA lists it

Kind of product
Aircraft
Makes
Bell Helicopter Textron Canada Limited
Models
429
On this site
Bell 429 175 registered

Dates and paperwork

Docket
Unknown
Replaced by
2018-16-51
Status
Historical
The FAA's document
Read the order on the FAA's site

Related safety bulletins advice on the same designs, not orders

2010-08-05SW-10-15R1 · Bell Helicopter Textron, Inc. Model 429 Helicopters with Certain Clam Shell Doors
2010-02-05SW-10-15 · Bell Helicopter Textron, Inc. (Bell) Model 429 Helicopters with Clam Shell Doors

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/2018-15-51.json · aircraft systems.