Search found 16 matches

by acmx
Fri Aug 09, 2019 3:02 pm
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 2279

Re: Hydraulic reservoir pressurization/ cavitation?

Okay, so basically, just as high altitudes and low pressures are harmful for humans, the same can be said for pumps. At low pressures, cavitation will cause bubbles to form in the fluid at the pump inlet which can be harmful. So they put bleed air inside to pressurize so that cavitation won’t happe...

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by acmx
Sun Jul 21, 2019 8:31 pm
Forum: Technical/Operations
Topic: Usage ratio of MIL-PRF-23827 to MIL-PRF-81322 grease on A320
Replies: 8
Views: 1331

Re: Usage ratio of MIL-PRF-23827 to MIL-PRF-81322 grease on A320

According to aeroshell: “Of 359 grease application points on a Boeing 737 - AeroShell Grease 33 lubricates all but 9 of them”. BMS 3-33 meets MIL-PRF-23827C specification. On Boeing’s, it’s definitely the most common grease I’ve seen. Pretty much used all over except a few landing gear fittings.

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by acmx
Sat Feb 09, 2019 3:11 am
Forum: Technical/Operations
Topic: Cl215 canadair
Replies: 8
Views: 1424

Re: Cl215 canadair

https://i.ibb.co/RphH0zm/E7-F921-BA-6-F7-B-4338-8-B6-D-76-D450-CE3684.jpg You need a binocular bolt shown on the left side of this pic! If you’re lucky you might oversize the hole and get away with a larger fastener, but with a snowmanned hole you could have edge distance issues. You need to find a...

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by acmx
Wed Jan 09, 2019 3:32 pm
Forum: Technical/Operations
Topic: NAV database updates for airliners.
Replies: 43
Views: 3265

Re: NAV database updates for airliners.

Once the transfer to the onboard server is complete, the AMT can move to another aircraft and comlete the same task. He needs to return to each aircraft he does and verify that the load is complete and the data correct, but the upload device (not a PDL anymore), isn't tied to the aircraft during th...

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by acmx
Tue Jan 08, 2019 1:44 pm
Forum: Technical/Operations
Topic: NAV database updates for airliners.
Replies: 43
Views: 3265

Re: NAV database updates for airliners.

We’re slowly moving to a wireless update on our A300. Bring the update device to the aircraft, wirelessly upload to the server, then the aircraft does the rest. All our other aircraft get the update device plugged into a connector on the flight deck, or directly into the FMC. What is the benefit of...

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by acmx
Mon Dec 31, 2018 5:53 pm
Forum: Technical/Operations
Topic: Boeing 777 Wiper limit speed
Replies: 39
Views: 4647

Re: Boeing 777 Wiper limit speed

The mechanics had some jokes about it too...

Was there a listed max speed on the classic? I remember some talk about one but it was probably made up.

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by acmx
Sat Dec 29, 2018 4:23 pm
Forum: Technical/Operations
Topic: Are toxic cabin fumes an underestimated risk, or not?
Replies: 73
Views: 6400

Re: Are toxic cabin fumes an underestimated risk, or not?

Not arguing for “aerotoxic syndrome” at all, but an example of how an apu can introduce smells/fumes into the cabin. Awhile back a md11 crew complained of fuel smell during preflight. The apu and packs were running. When I went back to the tail, fuel was leaking from the #2 drain mast and the wind w...

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by acmx
Thu Dec 27, 2018 10:43 pm
Forum: Technical/Operations
Topic: Pilots and AMTs, when do you use the a/c horn?
Replies: 37
Views: 3520

Re: Pilots and AMTs, when do you use the a/c horn?

I agree with the md11 location. Some people would need a ladder and it’s also has an access door with latches that never get used. And it’s definitely not as noticeable as other planes I’ve worked on.

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by acmx
Thu Dec 27, 2018 3:47 am
Forum: Technical/Operations
Topic: Puerto Rico airlines....large planes?
Replies: 11
Views: 1698

Re: Puerto Rico airlines....large planes?

On the cargo side of things , I’ve flown on 747s into sju. And Fedex flies md11s there regularly. Flight aware shows 767s have been going to bqn and it looks like Emirates sends a 777 there. So large jets can fly there. Whether there is a business case for a PR based airline with large jets, I would...

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by acmx
Sun Dec 23, 2018 11:45 pm
Forum: Technical/Operations
Topic: Pilots and AMTs, when do you use the a/c horn?
Replies: 37
Views: 3520

Re: Pilots and AMTs, when do you use the a/c horn?

There is a ground call that’s used to get the attention of personnel on the ground. Usually if you want them to get on headset to talk. I don’t see it used often. The ground call is a momentary switch so it stops when the switch is released. When the alarm is continuous like in the video it usually ...

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by acmx
Sat Dec 22, 2018 6:24 pm
Forum: Technical/Operations
Topic: Manual flight handling characteristics of airliners
Replies: 74
Views: 9372

Re: Manual flight handling characteristics of airliners

I’m not a pilot, but I remember one trip in particular as a flight mechanic. We were taking off heavy out of Iquique, Chile in a 747-200. The FO was flying and he kept nodding approvingly at the yoke during the climb. I talked to him later over some coffee and he said he loved hand flying a loaded 7...

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by acmx
Tue Nov 06, 2018 2:03 am
Forum: Technical/Operations
Topic: Discouraged Aircraft Mechanic
Replies: 38
Views: 4771

Re: Discouraged Aircraft Mechanic

Like others have said, without knowing where you it’s hard to say what jobs would be around you. But being an a&p without experience will limit your choices and your wage at first. But there are jobs around. There are those delta asm jobs, Fedex has been posting mtp jobs externally, both those g...

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by acmx
Fri Aug 31, 2018 1:08 pm
Forum: Technical/Operations
Topic: Cargo Pilots: a different breed of airmen?
Replies: 82
Views: 12369

Re: Cargo Pilots: a different breed of airmen?

Yeah the loadmaster was on board with 4 crew and 2 mechanics. An NTSB press release says “The investigation found that National Airlines’ cargo operations manual not only omitted critical information from Boeing and from the cargo handling system manufacturer about properly securing cargo, but it al...

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by acmx
Sun Aug 26, 2018 10:10 pm
Forum: Technical/Operations
Topic: Couple of go-around questions
Replies: 28
Views: 3881

Re: Couple of go-around questions

Like fr8mech said, landing gear cycles are airframe cycles. The cycles tell you how many times the gear has taken the stress of landing. They don’t count extension/retraction cycles. The gear overhaul intervals are set by calendar time and cycle limits, whichever comes first.

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by acmx
Wed Aug 22, 2018 12:43 am
Forum: Technical/Operations
Topic: Refreshing the cockpit.
Replies: 18
Views: 2044

Re: Refreshing the cockpit.

It’s the vinyl flooring you see in some flight decks and in galleys. I don’t know where the name came from but it’s the only thing I’ve heard it called, it was probably a brand at some point. I googled “moon mat aircraft” and the name showed in the first site description, but I couldn’t get it to op...

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by acmx
Tue Aug 21, 2018 1:39 pm
Forum: Technical/Operations
Topic: Refreshing the cockpit.
Replies: 18
Views: 2044

Re: Refreshing the cockpit.

How about cockpit seats? Do those get replaced after being sat on for thousands of hours? Seat cushions and covers get changed as they wear out. Either on the line or during checks. And the seats are repaired whenever components break. The two places I worked heavy check at both had seat shops. The...

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