# Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
> **Rule** · Final rule. · Published 2016-11-01 · Effective 2016-12-06 · 81 FR 75686
## Document
- **Document number:** 2016-26183
- **Category:** airworthiness
- **Manufacturer:** Pratt & Whitney Division Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 75686
- **Publication date:** 2016-11-01
- **Effective date:** 2016-12-06
- **FAA docket:** Docket No. FAA-2016-5423
## Abstract

We are adopting a new airworthiness directive (AD) for certain Pratt & Whitney (PW) PW4164, PW4164-1D, PW4168, PW4168-1D, PW4168A, PW4168A-1D, and PW4170 turbofan engines. This AD was prompted by several instances of fuel leaks on PW engines installed with the Talon IIB combustion chamber configuration. This AD requires initial and repetitive inspections of the affected fuel nozzles and their replacement with parts eligible for installation. We are issuing this AD to prevent failure of the fuel nozzles, which could lead to engine fire and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/11/01/2016-26183/airworthiness-directives-pratt-and-whitney-division-turbofan-engines)
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