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Published 1994-01-03 · Federal Register document 93-31908

Airworthiness Directives; General Electric CT7 Series Turboprop and Turboshaft Engines

Publication summary

This amendment adopts a new airworthiness directive (AD), applicable to General Electric (GE) CT7 series turboprop and turboshaft engines. This proposal would require the removal from service of certain gas generator turbine (GGT) rotor assembly parts that were plasma-sprayed during manufacture. This amendment is prompted by material testing that indicates that the plasma-spray process reduces the low cycle fatigue (LCF) capability of the material. The actions specified by this AD are intended to prevent fatigue cracks that can result in uncontained engine failure.

Why this record is shown

Source: Federal Register annual FAA metadata. Acquired 2026-09-03T22:22:42.789120+00:00. The title, summary and date are source facts.

Source revision
federal_register_ad_metadata_1994-ed2136421f1d03ae
Source row
results[0]
Raw source SHA-256
ed2136421f1d03ae21dde536ddae67f00cc6c36f9cbfb2d71e19b6c73b40ab63

Publication clauses unresolved

Complete source text is unavailable for structured observation. Use the complete recorded text or official source; no clean result has been inferred.

These are observations from one dated publication. Current legal status is unknown; aircraft applicability, installed configuration, compliance and burden require separate evidence. Missing or unparsed conditions remain unknown.

Official publication text unavailable

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Coverage and limits

These are dated publication metadata, recorded clauses and literal source observations. Word, model-label, header and reference matches do not establish current legal effect, manufacturer/model identity, aircraft applicability, installed configuration or compliance.

The collection uses 33 explicit annual source snapshots. Source captures and operative-text qualifications have separate states. Missing information remains unknown.