r/aviationmaintenance

Methyl Ethyl Ketone question

Hello, was giving the landing gear a wash and accidentally got a drop of MEK in my eye. Will i be okay? Vision is a little blurry, i put eye wash sailene in it and the burning stopped. When should i expect the blurry vision to go away?

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u/chr1st0pher42 — 17 hours ago
▲ 5 r/aviationmaintenance+1 crossposts

Which Entry level positions to gain experience?

I making a career change and I aspire to become an AME (Canada). Other than a keen interest, I am green when it comes to aviation. I’m currently looking at a couple of entry-level airport positions and may have the opportunity to work in either ramp/ground operations or aircraft de-icing.

For someone trying to eventually get into aircraft maintenance, which type of job would give me the most valuable experience?

Thank you all in advance

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u/AcrobaticFlamingo8 — 18 hours ago

How often do you uninstall serviceable parts and re-use them?

As the title states. We only ever do this when we take parts from one aircraft and put it on another, but it got me thinking if there were other use cases like this?

In my head, it doesn't make much sense to remove a serviceable part on an aircraft for no reason other than to use that some where else (ie: on another aircraft)

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u/Zidgof — 20 hours ago

Please help

If anyone has a good way of getting these kinds of safeties off I would love to hear it I can get some duckbills up there but it is a tight spot. This is the crossfeed filters on a 7X Falcon

Edit: with the limited space I found what works best is making a notch in a socket and when you turn it, it pushes out the safety made the job 10x easier and now I can do the job way faster for next time!

Just a 'quick' 100hr...

Was suppoused to be a quick 100 hour inspection until I pulled the gearbox drain plug. Had only 200hr left until TBO. Now replacing the gearbox. Guess the engine.

u/Tofucopter — 1 day ago

Why did a 12-cylinder Rolls-Royce Merlin need 24 spark plugs?

When I visited the de Havilland Aircraft Museum, I filmed this cutaway Merlin Mk 25 being turned over.

It is the remains of the starboard engine from Mosquito night fighter HJ719, built at Hatfield in 1943. The engine was badly damaged when it arrived at the museum, so it was turned into a cutaway display.

Each cylinder had two spark plugs. One magneto fired one plug in every cylinder, while the second magneto fired the other. This helped the fuel-air mixture burn more effectively and meant that the engine could continue running, although with reduced performance, if one ignition system failed.

I spent ten years in the RAF working on Phantom and Victor engines, so my experience is mainly with jet engines. It was fascinating to see a piston engine opened up and watch the pistons and valve gear moving.

For anyone who has worked on Merlins or similar piston aero engines, what other details should people look for in this video?

u/Asgarad786 — 2 days ago

Are you still happy?

Loaded question, I know. Lol (some backstory) I recently graduated from school and am in the process of getting my A&P. I've completed over half the tests so far, but as time goes on, I'm starting to have second thoughts. I failed my airframe practical...twice. but passed all of the other prior tests. I have no problem doing the work, and I did very well in school, to the point I was helping other students. And I've worked in the mechanical industry my whole adult life, So I know I CAN do it, but at this point I'm questioning if I should. I'm not IN LOVE with aircraft like I know a lot of techs are, more so just mechanics in general. I'm curious if those of you who are similar minded, are still happy in your career.

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u/No-Bad-Tripz — 2 days ago

A320 Girt Bar Removal

Hi, when we remove the bolts from the door girt bars on an A320, we use a socke wrench. However, standard sockets don’t fit into the opening, so we grind down the outside diameter of the socket to make it fit.
How do you remove them? Is there a specific tool designed for this job?

u/IChaliosI — 2 days ago

Weird question

Edit solved - it seems that in the context of the question about exhaust flow pic 1 is indeed ducted and pic 2 unducted. The passage the question in the asa oral and practical prep book came from page 3-25 of the 8083-32b if you want to read it for yourself. Its just a poor choice of descriptors. - page 1-56 explains it a lot more clearly and uses unmixed/separate or mixed/common nozzles instead of ducted or unducted.

Studying for my powerplant and came across this question. Maybe I just need sleep but I'm stuck on this one. Are these examples of ducted and unducted fan turbine engines? The 8083 book only shows an example of unducted(second image).

Q- How is exhaust flow different in a ducted fan turbine engine verses an unducted fan engine? (AM.III.L.K2)

A- Ducted fan engines take the fan airflow and direct it through closed ducts along the engine. Then, it flows into a common exhaust nozzle. The core exhaust flow and the fan flow mix and flow from the engine through this mixed nozzle. The unducted fan has two nozzles, one for the fan airflow and one for the core airflow. These both flow to ambient air separate from each other and have separate nozzles.

u/Remarkable_Can_9083 — 3 days ago

Tell me about these fasteners

What are these fasteners around the wind screen? In particular the ones with only letters on them. How are they attached/tightened, what keeps them from spinning or are they some form of rivet?

u/lordparcival — 3 days ago

Tailcone assembly issue

Hello everyone

I am on working on a 172G, it had prop strike and wing damage. wing has been repair by structure shop, it has skin damage. We took the stabs out to double check. They looked good then we we put the horizontal stab back we saw it has 3 degrees tilted to the right. we changed the entire tailcone assembly with a used one but again after fit the tailcone assy and the horizontal stab on it , it‘s still having around 2.65 degrees tillted. the old bulkhead had tons of holes on it.

No visible damage on the fuselage

any advice?

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u/Physical_Detective80 — 2 days ago

Well, everyone’s doing it

King Air 200, nose gear chain broke and the nose gear wouldn’t extend. The pilot did an okay job holding the nose off as long as he could, but didn’t shut down the engines before landing. Two new props, two overhauled engines, and a bunch of sheet metal repair later, and she was off flying again about a year later!

u/Puzzleheaded_Ad6097 — 4 days ago

Did anyone lose a maintenance light?

The Australian Transport Safety Bureau (ATSB) have it if you want to claim it.

I know virtually nothing about planes, but would this really have posed a "significant risk to the safe operation of an aircraft", like the ATSB report states?

The article mentions a previous incident:

> In December 2023, a Qantas A380 flew multiple international trips before a 1.25 metre nylon turning tool was discovered in one of the plane's engines.

Which seems more dangerous.

abc.net.au
u/PiesRLife — 3 days ago