EASA Regulations for General Electric CT7-7

3 airworthiness directives and regulations affecting General Electric CT7-7.

EASA AD US-2025-05-02

Engine - Stage 1 Turbine Forward Cooling Plate and Stage 2 Turbine Aft Cooling Plate - Replacement

The document titled 'Engine - Stage 1 Turbine Forward Cooling Plate and Stage 2 Turbine Aft Cooling Plate - Replacement' is a regulatory directive concerning the replacement of specific turbine cooling plates in aircraft engines. It addresses maintenance and replacement procedures for the Stage 1 turbine forward cooling plate and the Stage 2 turbine aft cooling plate components. The directive is relevant to aviation maintenance professionals responsible for engine upkeep and safety compliance.

Apr 2, 2025

Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric CT7-5General Electric CT7-7General Electric CT7-9

EASA AD US-2023-21-07

Engine - Main Propeller Shaft - Inspection

Airworthiness Directive 2023-21-07 is a final rule issued by the Federal Aviation Administration (FAA) addressing certain General Electric Company Model CT7 series engines, including CT7-5A2, CT7-5A3, CT7-7A, CT7-7A1, CT7-9B, CT7-9B1, CT7-9B2, CT7-9C, and CT7-9C3. This directive mandates inspections of the main propeller shaft to prevent in-flight failures that could result in loss of the propeller and engine thrust control. It applies to engines installed on U.S. registered aircraft and includes visual, fluorescent penetrant, and ultrasonic inspections.

Dec 6, 2023

Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric CT7-5General Electric CT7-7General Electric CT7-9

EASA AD US-2018-03-13

SUPERSEDED BY FAA AD 2023-21-07

FAA Airworthiness Directive 2018-03-13 is a final rule addressing certain General Electric Company CT7 series turboprop engines, specifically models CT7-5A2, CT7-5A3, CT7-7A, CT7-7A1, CT7-9B, CT7-9B1, CT7-9B2, CT7-9C, and CT7-9C3 with main propeller shaft part number 77581-11 installed. This directive mandates initial and repetitive visual and fluorescent-penetrant inspections of the main propeller shaft to detect wear, corrosion, and cracks. It was issued to prevent unsafe conditions resulting from main propeller shaft failure.

Feb 28, 2018

Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric CT7-5General Electric CT7-7General Electric CT7-9