Superseded by FAA AD 2022-09-14
- Published
- Effective
- Deadline
- Replaces
- 2017-23-06
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must perform initial and repetitive inspections of the OBV components within specified flight hour intervals, starting no later than December 23, 2019. Any OBV or related hardware that fails inspection must be replaced promptly. Operators should refer to GE Service Bulletin CF34-8C S/B 75-0020, R04 for detailed inspection procedures and maintain records of compliance.
Summary
Airworthiness Directive 2019-22-05 is a final rule issued by the Federal Aviation Administration (FAA) that supersedes AD 2017-23-06. It applies to General Electric Company CF34-8C series turbofan engines, including models CF34-8C1, CF34-8C5, CF34-8C5A1, CF34-8C5B1, CF34-8C5A2, and CF34-8C5A3. The directive addresses safety concerns related to the operability bleed valve (OBV) to prevent engine fires and potential damage to aircraft.
What changed
This AD expands the applicability of required repetitive inspections to additional CF34-8C engine models and mandates inspections of the OBV fuel tubes, bleed air manifold link rod assemblies, and fuel fittings. It also requires replacement of OBVs or related hardware if inspections reveal failures. The AD updates inspection intervals and clarifies compliance requirements compared to the previous AD it supersedes.
Why it matters
This directive is critical for aviation professionals because it addresses a known unsafe condition that has caused multiple engine fires. Operators and maintenance organizations must ensure compliance to prevent engine failures and maintain aircraft safety. The expanded applicability means more engines are subject to these inspections, impacting maintenance planning and operational readiness.
More for General Electric CF34-8
All 10- EASA AD US-2025-12-08Turbine Engine - Combustion Chamber Assembly - InspectionJul 16, 2025
- EASA AD US-2023-02-05Time Limits / Maintenance Checks — Airworthiness Limitations Section — AmendmentMar 7, 2023
- EASA AD US-2022-21-06Engine - Low Pressure Turbine Stage 5 Discs - Removal / ReplacementNov 10, 2022
- EASA AD US-2022-09-14Air - Operability Bleed Valve - Inspection / ReplacementMay 23, 2022
- EASA AD US-2022-08-06
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