# Airworthiness Directives; Pratt & Whitney R-1340 Series Reciprocating Engines
> **Rule** · Final rule. · Published 1999-05-18 · Effective 1999-07-19 · 64 FR 26833
## Document
- **Document number:** 99-12297
- **Category:** airworthiness
- **Manufacturer:** Pratt & Whitney R-1340 Series Reciprocating
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 26833
- **Publication date:** 1999-05-18
- **Effective date:** 1999-07-19
- **FAA docket:** Docket No. 97-ANE-58-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney R-1340 series reciprocating engines, that requires initial and repetitive visual and fluorescent penetrant inspections of cylinders for head cracking. This amendment is prompted by reports of cylinder head cracking. The actions specified by this AD are intended to prevent cylinder head cracking, which can result in engine power loss, forced landing, and damage to the aircraft.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/05/18/99-12297/airworthiness-directives-pratt-and-whitney-r-1340-series-reciprocating-engines)
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