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Presentation of my Internship experience in 4th year AERO 4003 course. Covers my engine assembly of CF6 50 engine, MCD test of PW 4156 (A 310) and B 737 powerplant system.Also discusses the Hydraulic oil leak detection of APU of DC 10
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By Kamal Mahmud
Engine Oil is used for cooling and lubricatingbearing compartments and AGB of Aircraft Engine
Pumps (Scavenger pumps) are used to circulate oil around the components from oil tank
MCDs detect unwanted material from engine oil
This tells if there is any mechanical failure in the engine bearing or gears of AGB
P.S does not show the pumps
GE CF6 80 is used in Boeing 747GE 90 used in Boeing 777GEnx to be used in Boeing 787 & Airbus A 350
There are 3 MCDs in CFM 56 7B engine◦ Forward Sump
◦ Rear Sump
◦ AGB
Scavenge oil filter
Supply oil Filter
Each MCD has ◦ Probe (M & M)
◦ Valve
Six pushbutton MCD◦ 4 scavenger oil tubes
◦ 1 in AGB
◦ 1 in oil tank
After removing the MCD, if chips are found then MCDs are washed using special solvent
The mixture is collected and taken to lab for analysis & the faulty component is found
Serious problem; the engine is changed or else aircraft grounded
Detected while doing Pre-flight inspection on a late night flight of MD DC-10-30
Oil leak at beneath Empennage Area
Oil reservoir was almost empty
Found out that the problem was with APU connection
Cockpit crew notified not to use APU
Alternative method used to start engine
This would be detected in other detection procedures
Questions
Thank You