2014-12-52: 2nd stage low-pressure turbine (LPT2) blades
Emergency order 2014-12-52 is an airworthiness directive. The FAA's subject line: 2nd stage low-pressure turbine (LPT2) blades. It names the Honeywell TFE-731-series, Honeywell TFE731-20AR, Honeywell TFE731-20BR, Honeywell TFE731-4, Honeywell TFE731-40, Honeywell TFE731-40AR, Honeywell TFE731-40R, Honeywell TFE731-4R, Honeywell TFE731-50R, Honeywell TFE731-5BR, Honeywell TFE731-5R, Honeywell TFE731-60 engines: about 792 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.
What it applies to as the FAA lists it
- Kind of product
- Engine
- Makes
- Honeywell International Inc.
- Models
- TFE731-20AR, TFE731-20BR, TFE731-20R, TFE731-4, TFE731-40, TFE731-40AR, TFE731-40BR, TFE731-40R, TFE731-4R, TFE731-50R, TFE731-5AR, TFE731-5BR, TFE731-5R, TFE731-60
- Engine series
- Honeywell TFE-731-series 291 aircraft
Honeywell TFE731-20AR 51 aircraft
Honeywell TFE731-20BR 105 aircraft
Honeywell TFE731-4 1 aircraft
Honeywell TFE731-40 17 aircraft
Honeywell TFE731-40AR 50 aircraft
Honeywell TFE731-40R 18 aircraft
Honeywell TFE731-4R 5 aircraft
Honeywell TFE731-50R 123 aircraft
Honeywell TFE731-5BR 87 aircraft
Honeywell TFE731-5R 6 aircraft
Honeywell TFE731-60 38 aircraft
Dates and paperwork
- Docket
- Unknown
- Replaced by
- 2014-12-52
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
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 October 7, 2026. Connections as data: /graph/directive/2014-12-52.json · aircraft systems.