Search found 28 matches

by acmx
Sun Sep 19, 2021 1:09 pm
Forum: Technical/Operations
Topic: Delta TechOps Line Technician
Replies: 14
Views: 1434

Re: Delta TechOps Line Technician

Is the 2 or 3 year commitment to a station when you hire in a hard and fast rule? Or are there situations where they let people bid out prior to meeting the commitment?

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by acmx
Thu Sep 02, 2021 4:16 am
Forum: Technical/Operations
Topic: What are the three vertical lines on the MD-11 radome?
Replies: 7
Views: 1734

Re: What are the three vertical lines on the MD-11 radome?

Lightning diverter strips. They provide a path for electricity to travel across the composite radome.

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by acmx
Mon Jun 07, 2021 1:10 pm
Forum: Technical/Operations
Topic: Unexplained objects on UPS pushback tug tow bar
Replies: 25
Views: 5693

Re: Unexplained objects on UPS pushback tug tow bar

How often do you see the tether actually stop the aircraft from tipping ? It’s hard to put a number to that since they don’t tip with a tether installed. But I’ve seen them get pretty tight and I think some of those would’ve tipped. Really only on MDs though. It’s probably overkill doing the whole ...

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by acmx
Fri May 28, 2021 3:04 am
Forum: Technical/Operations
Topic: MD11 CRT displays
Replies: 25
Views: 6183

Re: MD11 CRT displays

It's technical possible to design a replacement LCD, with all the complex switching and symbol generator(s) included (as installed in older Airbus aircraft). But then you have to re-certify also all these extra functions. If you only have to replace the CRT display by an LCD, certification is less ...

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by acmx
Tue May 25, 2021 10:58 pm
Forum: Technical/Operations
Topic: Unexplained objects on UPS pushback tug tow bar
Replies: 25
Views: 5693

Re: Unexplained objects on UPS pushback tug tow bar

Not sure about ups, but we install it when the plane blocks in and it stays there until you are actively setting up to push out. Even if the plane is loaded already, if there is an extended time until departure the tether stays on until you are setting up for pushback. We have a tether installed on ...

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by acmx
Mon May 17, 2021 10:40 pm
Forum: Technical/Operations
Topic: APU Inflight start on Battery
Replies: 8
Views: 2081

Re: APU Inflight start on Battery

Just a guess...but I would bet it because it’s harder to start an apu the higher you go. A battery is depleting it’s energy throughout the start so having a height ceiling makes sense to make sure the battery can last through the start. A tru is converting ac to dc so as long as everything is workin...

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by acmx
Mon Apr 26, 2021 1:46 pm
Forum: Technical/Operations
Topic: Why can a pax stand upright in downstairs toilets?
Replies: 10
Views: 4139

Re: Why can a pax stand upright in downstairs toilets?

They are the bilge drains. The drain masts are for things like lav and galley sinks usually.

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by acmx
Tue Apr 13, 2021 2:04 pm
Forum: Technical/Operations
Topic: Crippled by a windshield wiper
Replies: 25
Views: 3742

Re: Crippled by a windshield wiper

Where I work (US based) a known issue between block out and take off would have to be addressed before flying. I think that’s pretty common here but don’t really know. Opening a breaker to deactivate a circuit then flying would have to be backed up by some approved document, most likely the MEL but ...

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by acmx
Sat Apr 10, 2021 1:11 am
Forum: Technical/Operations
Topic: Red lights in gears bay. What for?
Replies: 10
Views: 16163

Re: Red lights in gears bay. What for?

Like others have said it’s the door unsafe lights. They come on when the doors cycle. For wheel well illumination, there are separate lights with white light.

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by acmx
Tue Mar 02, 2021 12:58 am
Forum: Technical/Operations
Topic: Fedex 777 EFVS
Replies: 8
Views: 1777

Re: Fedex 777 EFVS

All planes in the FedEx trunk fleet have a hud/efvs except for the A300’s. Any not having it would be a rare exception and probably a new acquisition.

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by acmx
Mon Feb 22, 2021 1:16 am
Forum: Technical/Operations
Topic: When did GPS become mainstream in commercial aviation?
Replies: 40
Views: 2904

Re: When did GPS become mainstream in commercial aviation?

I understand losing ADS-B, but the secondary radar interrogation will work I think mxaxai is right about it just being a lazy implementation as planes are modded. From what I’ve seen, when a gps system is not working the transponder that it feeds input to will have a fail light on the control panel...

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by acmx
Mon Feb 01, 2021 1:33 am
Forum: Technical/Operations
Topic: How are aircraft registration chosen?
Replies: 14
Views: 2730

Re: How are aircraft registration chosen?

The us registered company I work for seems to focus on keeping the three number digits unique to each plane and also fall into a certain block of numbers that specify fleet type (eg: 900-999 are used for just 757s) . There is some variation on the last two letters of the registration and that might ...

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by acmx
Fri Aug 09, 2019 3:02 pm
Forum: Technical/Operations
Topic: Hydraulic reservoir pressurization/ cavitation?
Replies: 22
Views: 3653

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: 1779

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: 1586

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: 4566

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: 4566

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: 5356

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: 7239

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: 4006

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: 2134

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: 4006

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: 9953

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: 5255

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: 14212

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: 4235

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: 2226

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: 2226

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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