EASA Module 14 case studies
EASA Module 14 · Put your knowledge to work in context.
Module 14, Propulsion, is one of the Part-66 aircraft maintenance licence knowledge modules listed in the Annex III appendix to Commission Regulation (EU) No 1321/2014, the regulation that sets out continuing airworthiness requirements including maintenance personnel training and licensing. It is aimed at candidates working toward a Part-66 licence, typically through a Part-147 training organisation or by self-study followed by examination at a competent authority. The module is delivered in English as multiple-choice questions across four subject areas: turbine engines, piston engines, engine systems and components, and propellers. Content spans engine construction and operating principles, ignition, starting, fuel, lubrication, cooling, indicating and control systems, plus propeller theory, construction, control and synchronising. The EASA Module 14 case studies are 5 cases and about 2,820 words.
1HP Turbine Blade Shroud Wear and EGT Margin Erosion
A high-bypass turbofan engine on a twin-aisle aircraft has accumulated 8,900 hours and 14,200 cycles. At the last takeoff, the takeoff EGT margin was 12°C above the redline, down from 16°C 400 cycles earlier.
639 words, about 3 min2Detonation During Climb in a Turbocharged Piston Engine
A twin-engine aircraft is powered by turbocharged, fuel-injected six-cylinder piston engines. During a climb at 16,000 ft, the pilot sets 34 inHg manifold pressure and 2,500 rpm.
589 words, about 3 min3Oil Filter Impending Bypass and Falling Oil Pressure
During cruise at FL380 in a twin-engine turbofan aircraft, the oil pressure on the left engine falls from 60 psi to 42 psi. The normal range is 55–65 psi, and the minimum continuous limit is 40 psi.
553 words, about 3 min4Propeller Overspeed on Takeoff
A turboprop aircraft is powered by a PT6A engine driving a four-blade constant-speed propeller. Maximum propeller speed is 1,900 rpm.
511 words, about 3 min5In-Flight Compressor Surge After Bleed Valve Malfunction
A high-bypass turbofan is in a step climb from FL340 to FL360. At N1 84% and EGT 720°C, the crew hears a loud bang.
528 words, about 3 min