AD 2004-14-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Canada PW206B | Airworthiness Directives; Pratt & Whitney Canada PW206B, PW206C, PW206E, PW207D, and PW207E Turboshaft Engines |
Unsafe Condition
Irregular low-cycle-fatigue (LCF) counting data recorded by the engine Data Collection Unit (DCU) can lead to corruption of cycle counting history, potentially causing critical rotating parts to exceed published life limits, resulting in uncontained engine failure and possible loss of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Operators must perform a Comparison Check and a Consistency Check of the automatic LCF counting data made by the engine DCU on installed engines, based on the remaining life limit cycles of specific components. Additionally, proper DCU automatic LCF counting must be validated before engine installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Varies based on remaining life limit cycles: within 50 engine flight hours or two months for engines with fewer than 2,000 cycles remaining; within 200 engine flight hours or three months for engines with 2,000 to 5,000 cycles remaining; within 500 engine flight hours or four months for engines with more than 5,000 cycles remaining.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Canada PW206B, PW206C, PW206E, PW207D, and PW207E turboshaft engines, including PW206B engines that have incorporated Service Bulletin No. 28119.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.