Engineer Aircraft case studies
Engineer Aircraft · Put your knowledge to work in context.
The Engineer Aircraft credential is aimed at licensed or trainee maintenance engineers who need to demonstrate a broad, systems-level understanding of fixed-wing aircraft rather than a single trade specialisation. It is typically used by employers and licensing bodies to confirm that a candidate can reason across airframe structures, propulsion, electrical and avionics installations, fluid systems, flight controls and landing gear, and can connect hands-on maintenance practice to airworthiness regulation and human-factors awareness. The Engineer Aircraft case studies are 5 cases and about 2,977 words.
1Lap-Joint Corrosion and Fastener-Hole Crack at a 737-800 C-Check
During a C-check on a 737-800 with 42,000 flight cycles, an inspector finds a 180 mm long, 0.35 mm deep corrosion pit in the fuselage skin at a lap joint, station 727, left side, between frames 24 and 25. The SRM allows blend-out to 0.20 mm below nominal skin thickness, provided the blend is within a 300 mm circle and no more than two adjacent fasteners are affected.
606 words, about 3 min2ETOPS Dispatch Decision with Oil Consumption and HPT Vane Crack
At an outstation, a 737-800 with CFM56-7B engines is scheduled for a 4-hour ETOPS flight. The right engine has an EGT margin of 8°C, oil consumption of 0.65 qt/h over the last 25 hours, and a chip detector with fine fuzz but no flakes.
635 words, about 3 min3Intermittent ADIRU Fault and Chafed Avionics Harness
An A320 has an intermittent ADIRU 2 fault. On three consecutive flights, the ECAM shows 'IR 2 FAULT' for 2-5 seconds during climb, then clears.
591 words, about 3 min4Hydraulic Case-Drain Leak and Inoperative Crossfeed Valve
On a 777-300ER at the gate, the left hydraulic reservoir indicates 68% and the EICAS shows an advisory. A drip from the left engine-driven pump case drain line is measured at 12 drops per minute.
590 words, about 3 min5Nose-Gear Shimmy, Low Torque-Link Bolt Torque, and Lug Crack
After a heavy maintenance visit, a 737-800 has a nose gear shimmy complaint. During a taxi test, shimmy occurs at 18 knots, and a 6 mm crack is found at the upper lug of the nose gear torque link fork.
555 words, about 3 min