Search found 173 matches

by unimproved
Sun Jul 05, 2020 12:47 am
Forum: Technical/Operations
Topic: Which agency should I choose for getting the AML-66 EASA license?
Replies: 3
Views: 385

Re: Which agency should I choose for getting the AML-66 EASA license?

Why would you need an EASA license in HK?

Almost all of our certified outstation guys were licensed in their own country before getting the Part 66 as an internal training.

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by unimproved
Wed Jul 01, 2020 5:47 pm
Forum: Technical/Operations
Topic: how to assess engine run certifying staff
Replies: 6
Views: 785

Re: how to assess engine run certifying staff

Seems pretty dangerous to give that task to someone with no experience in the field.

We use the pilot training simulators to do a yearly check on engine run staff. Basic things like a normal engine run, APU/engine fire, compressor stall, etc.

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by unimproved
Mon Jun 22, 2020 3:47 pm
Forum: Technical/Operations
Topic: DC-10/MD-11 with only engine number 2?
Replies: 10
Views: 2426

Re: DC-10/MD-11 with only engine number 2?

All depends on the weight. OEW is about the same as A332 while thrust is slightly less. Im curious about the Eastern incident noted above: How would the NTSB determine a mechanic forgot to fit the O-rings? Surely, a simple question to said mechanic would render the obvious answer: "Of course I ...

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by unimproved
Fri May 15, 2020 7:47 am
Forum: Technical/Operations
Topic: engine derivatives
Replies: 8
Views: 1556

Re: engine derivatives

No, it means they scaled down the GE90 core and tweaked it. That's it.

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by unimproved
Wed May 06, 2020 7:24 pm
Forum: Technical/Operations
Topic: 747-400 horizontal stabilizer tank question
Replies: 22
Views: 3202

Re: 747-400 horizontal stabilizer tank question

There is no tank, you just make part of the stabilizer leak proof and add plumbing.

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by unimproved
Sun May 03, 2020 7:03 pm
Forum: Technical/Operations
Topic: Qatar 777 Freighter in Bremen
Replies: 9
Views: 1076

Re: Qatar 777 Freighter in Bremen

You can't derive anything from an airliner using the full length. We derate thrust to reduce wear on the engines. We almost always can take off using a shorter run but we don't because of wear and tear. True! But how come all aircraft landing and departing are only allowed to use the 2,000 meters w...

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by unimproved
Thu Apr 23, 2020 6:13 am
Forum: Technical/Operations
Topic: Boeing 777 PIP 2.0 2016
Replies: 7
Views: 1720

Re: Boeing 777 PIP 2.0 2016

One of the changes includes being able to use the MAT on the cockpit screens which makes test work a lot quicker.

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by unimproved
Mon Apr 06, 2020 3:53 pm
Forum: Technical/Operations
Topic: How are some vintage airliners still operational?
Replies: 33
Views: 4099

Re: How are some vintage airliners still operational?

For the fuselage there is often a life extension program that requires parts to be reinforced or replaced after a number of cycles.

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by unimproved
Thu Apr 02, 2020 5:55 pm
Forum: Technical/Operations
Topic: Ground Service Connection Data
Replies: 6
Views: 1272

Re: Ground Service Connection Data

Hi....A key point is that neutral conductors can be switched as long as it is achieved at the same time as the phase(s) conductor, protective conductors cannot be switched. The reasons do not need explanation. Decide whether this "functional earth" (whatever it is) is a protective conduct...

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by unimproved
Wed Apr 01, 2020 7:01 am
Forum: Technical/Operations
Topic: How do airlines determine which graveyard to fly decommissioned aircraft to?
Replies: 3
Views: 1458

Re: How do airlines determine which graveyard to fly decommissioned aircraft to?

It is indeed a simple case of the highest bidder. Or for storage, the lowest.

We've sent the same type to at least 4 differing scrapyards.

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by unimproved
Tue Mar 24, 2020 8:48 pm
Forum: Technical/Operations
Topic: Ground Service Connection Data
Replies: 6
Views: 1272

Re: Ground Service Connection Data

Any company doing the maintenance or sale of ground power units will be able to tell and sell you that. If you have to ask online, you're not ready to do it in-house.

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by unimproved
Mon Mar 23, 2020 12:59 pm
Forum: Technical/Operations
Topic: WN 737 at gate...Tail Stand
Replies: 9
Views: 2039

Re: WN 737 at gate...Tail Stand

It's also used on the 747F because of the aft main cargo door.

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by unimproved
Sun Mar 22, 2020 2:46 pm
Forum: Technical/Operations
Topic: Aircraft Software Systems
Replies: 19
Views: 2507

Re: Aircraft Software Systems

On the A320 planes that were delivered last month from Airbus, they have a 3.5” floppy drive installed on the center pedestal and PCMCIA cards to access the aircraft data systems. Hmm... Will you be able to share which MSN is this? It's interesting to find out that some operators to this age of tec...

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by unimproved
Thu Mar 19, 2020 3:35 pm
Forum: Technical/Operations
Topic: 787 systems
Replies: 5
Views: 1876

Re: 787 systems

The deflector doors also block airflow which you need in extreme temperatures.

There are some airports around the 14k mark, so making it a hard limit could lead to unnecessary deployments.

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by unimproved
Mon Mar 16, 2020 2:48 pm
Forum: Technical/Operations
Topic: Why did Boeing change RETARD to IDLE on their FMA?
Replies: 6
Views: 1719

Re: Why did Boeing change RETARD to IDLE on their FMA?

Likely due to the 737NG having a more off the shelf avionics package, while the 777 was designed for it. It's a regional difference in language with the US preferring idle, same with cockpit/flight deck.

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by unimproved
Sun Mar 15, 2020 5:18 pm
Forum: Technical/Operations
Topic: Aircraft Retirement: What Equipment Gets Retained
Replies: 8
Views: 1411

Re: Aircraft Retirement: What Equipment Gets Retained

All BA 744s are owned outright AFAIR. So I would guess the RB211s can be retained for use as spares or use on other 744s remaining? It all depends. They would get substantially less money for an airframe without the engines. But it depends on how desperate they are for spare engines. TBH, I would i...

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by unimproved
Thu Mar 12, 2020 7:48 pm
Forum: Technical/Operations
Topic: Why would a test flight be flying low?
Replies: 19
Views: 1856

Re: Why would a test flight be flying low?

Mask drop test. Stabilize at 10, bump it up a little bit to get them to drop and descend again.

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by unimproved
Thu Mar 12, 2020 11:24 am
Forum: Technical/Operations
Topic: Would the MAX be having issues if it had the PW GTF?
Replies: 18
Views: 3871

Re: Would the MAX be having issues if it had the PW GTF?

It's also needed for the lengthening, and skipping that would mean a very niche product since the CSeries is already taking away market share from the smaller versions.

What it needs is a complete redesign, or at least a full fly by wire system.

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by unimproved
Sat Feb 29, 2020 6:41 am
Forum: Travel, Polls & Preferences
Topic: Why were these A340's retired so early?
Replies: 2
Views: 958

Re: Why were these A340's retired so early?

Likely a heavy maintenance visit getting close which was already done on the older frames.

When you strip the engines and rotables from a 340, not much of value remains.

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by unimproved
Fri Feb 28, 2020 6:14 am
Forum: Technical/Operations
Topic: Silly designs in otherwise great aircraft
Replies: 56
Views: 7709

Re: Silly designs in otherwise great aircraft

The A330 main gear has a "shortening mechanism" to fit the gear in the well on retraction. For no apparent reason, the ECAM message for a fault with the shortening mechanism is " lengthening fault"... Probably written by the same engineer that thought when you fly past Top of De...

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by unimproved
Fri Feb 28, 2020 12:03 am
Forum: Technical/Operations
Topic: Silly designs in otherwise great aircraft
Replies: 56
Views: 7709

Re: Silly designs in otherwise great aircraft

Where to start? Where to end? This list could be veeeery long. -On the 777 there is no dust bin at all on the flight deck. -On newer 777 you have to switch ON the printer right after you supply external power or the aircraft will be unhappy and you'd have to reboot if you forgot the printer. -There...

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by unimproved
Tue Feb 25, 2020 11:31 pm
Forum: Technical/Operations
Topic: Durability of high-pressure turbine blades
Replies: 3
Views: 1269

Re: Durability of high-pressure turbine blades

Engines are only pulled after degraded performance or maintenance findings. The record is around 12 years on a 737NG.

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by unimproved
Tue Feb 25, 2020 1:38 am
Forum: Technical/Operations
Topic: Virgin Australia B77W Crew Rest Area Escape Hatch
Replies: 4
Views: 1838

Re: Virgin Australia B77W Crew Rest Area Escape Hatch

Yeah, that's a Boeing furnished crew rest. It folds out just like a regular overhead bin.

The third party crew rest on our 747, that's an injury hazard. The exit is in the aisle and it sends a hatch flying down right in between the lavatories (and anyone waiting to use them).

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by unimproved
Sun Feb 23, 2020 10:51 am
Forum: Technical/Operations
Topic: Interior modules expansion due to pressurization effects
Replies: 10
Views: 1033

Re: Interior modules expansion due to pressurization effects

The fuselage expands during pressurization so it'd be the other way around. No clearance checks are done in the air however, so it'll always be adjusted to ground situation.

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by unimproved
Fri Feb 21, 2020 5:49 am
Forum: Technical/Operations
Topic: 747-400 with three jetways attached
Replies: 18
Views: 2782

Re: 747-400 with three jetways attached

Even if turn time didn't matter, it could become an issue if there was a delay, for any reason. It certainly makes the most sense to minimize boarding time. That said, I don't think any 747 uses upper deck boarding, including the -8. IIRC, the upper deck door is not approved for this use. Evac only...

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by unimproved
Thu Feb 20, 2020 7:41 pm
Forum: Technical/Operations
Topic: 747-400 with three jetways attached
Replies: 18
Views: 2782

Re: 747-400 with three jetways attached

Widebody turnaround time isn't as critical and mostly planned around slots and connecting flights. Boarding time isn't really an issue. Also the jetways might not be long enough to reach door 3L over the wing (this looks to be the case with most of the jetways at LAX - the two long ones are connecte...

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by unimproved
Tue Feb 18, 2020 5:44 am
Forum: Technical/Operations
Topic: 747-400 Domestic variant.
Replies: 16
Views: 2024

Re: 747-400 Domestic variant.

Wingspan was a bit smaller, however. 195ft, compared to the typical 211ft. Incidentally, 195ft was the wingspan of the 747-100/200/300 predecessors. The wingspan of the -400D remained the same as the older 747 variants because they determined that the added weight of the wingtip extension and the w...

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by unimproved
Mon Feb 10, 2020 9:50 pm
Forum: Technical/Operations
Topic: Strange probes on the A350
Replies: 20
Views: 2782

Re: Strange probes on the A350

The hangar tests are possible the most annoying test I've ever heard on an airplane, especially the Airbus A320. In the old Delta four bay narrow body hangar the sound was deafening. Maddog, thank you so much for your response. TechOps at ATL? That sounds like it must’ve been “fun!” Just found a 77...

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by unimproved
Thu Feb 06, 2020 11:18 am
Forum: Technical/Operations
Topic: Security Questions
Replies: 3
Views: 1198

Re: Security Questions

Even the thoughts behind it are just theater. You could create a lot more casualties with a well placed explosion in the terminal than on an aircraft itself.

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by unimproved
Sat Feb 01, 2020 12:31 pm
Forum: Technical/Operations
Topic: Squib circuit on overhead emergency exit of B757-200/300
Replies: 9
Views: 1251

Re: Squib circuit on overhead emergency exit of B757-200/300

Isn't it for the slide since it isn't physically connected to the door?

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by unimproved
Fri Jan 31, 2020 12:50 pm
Forum: Technical/Operations
Topic: Flashlight for Line/Major maintenance
Replies: 24
Views: 2597

Re: Flashlight for Line/Major maintenance

I use the basic aliexpress UltraFire ones. Gives enough light for most jobs and with a price of less than $10 they can almost be considered consumables.

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by unimproved
Fri Jan 31, 2020 12:47 pm
Forum: Technical/Operations
Topic: Boeing TBR for Line maintenance work
Replies: 1
Views: 440

Re: Boeing TBR for Line maintenance work

The company provided Logitech keyboard case. It doesn't do much but getting a new iPad is cheaper than buying your own case.

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by unimproved
Fri Jan 31, 2020 7:04 am
Forum: Technical/Operations
Topic: N705CK Evacuation
Replies: 27
Views: 3639

Re: N705CK Evacuation

Francoflier wrote:
Interesting setup.

Though I'm curious as to why a passenger aircraft couldn't be chartered for 200 pax.

Likely a case of airlines not wanting to have the responsibility and deal with the aftermath if it does spread inflight.

Kalitta will do anything for money.

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by unimproved
Tue Jan 28, 2020 5:39 am
Forum: Technical/Operations
Topic: Why no Trim Tank in the A350?
Replies: 40
Views: 3920

Re: Why no Trim Tank in the A350?

thepinkmachine wrote:
AFAIK, The 350 uses cruise flaps to shift the center of lift towards the c.g. It essentially does the same job as the trim tank, but without all the plumbing.

And without all the penalties when one of the components fails with a filled tank

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by unimproved
Fri Jan 24, 2020 1:26 pm
Forum: Technical/Operations
Topic: Wing length and economy of scale in aircraft manufacturing
Replies: 12
Views: 1148

Re: Wing length and economy of scale in aircraft manufacturing

Not an engineer, but I’m pretty sure that the 380 wasn’t able to have the wingspan that it should have because it had to fit into existing gates at airports. Therefore it was kind of doomed from the start, which is why they don’t make ‘em anymore. If it didn't have the wingspan it needed then it wo...

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by unimproved
Fri Jan 24, 2020 1:10 am
Forum: Technical/Operations
Topic: Collaboration Software?
Replies: 4
Views: 557

Re: Collaboration Software?

SAP ? :-) Actually any type of (better) ERP software. good solutions work across the full production and planning tree ( and across entity boundaries ). IMU a PITA to set up :-)) Oh My! I Nearly physically vomited when you said SAP. If you like a user interface from 1992 that requires you to wait f...

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by unimproved
Thu Jan 16, 2020 7:23 pm
Forum: Technical/Operations
Topic: A220 cockpit light bar above keyboard??
Replies: 3
Views: 1156

Re: A220 cockpit light bar above keyboard??

The scratchpad to see the text you're typing before putting it in

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by unimproved
Tue Jan 14, 2020 7:41 pm
Forum: Technical/Operations
Topic: Technical Info Request on B737NG, A320
Replies: 2
Views: 929

Re: Technical Info Request on B737NG, A320

I can give you the part number + vendor, but without specifying an operator.

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by unimproved
Thu Jan 09, 2020 3:42 pm
Forum: Technical/Operations
Topic: 737 NG bug: Display units can blank on approach to 7 specific runways
Replies: 3
Views: 1418

Re: 737 NG bug: Display units can blank on approach to 7 specific runways

mxaxai wrote:
That's an odd and very specific bug. I wonder why it never occured previously?

Likely introduced in a recent software update

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by unimproved
Wed Jan 08, 2020 8:33 pm
Forum: Technical/Operations
Topic: Are there any B747Fs at VCV, MHV, etc.?
Replies: 3
Views: 736

Re: Are there any B747Fs at VCV, MHV, etc.?

Enough frames, not enough engines. We do CF6 overhauls in-house and still have to fly with loaners.

IIRC 4 engines are now worth more without the aircraft attached to them than with.

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by unimproved
Wed Jan 08, 2020 1:13 pm
Forum: Technical/Operations
Topic: Cargo Freighters operating cost comparison
Replies: 6
Views: 1279

Re: Cargo Freighters operating cost comparison

Lease cost vs utilization is the big one. A 777 might have lower fuel burn but that doesn't weigh up against the extra non-operating costs when it's only in the air for less than 30 hours a week.

There's a reason a lot of cargo airlines are picking 747s out of the desert.

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by unimproved
Fri Jan 03, 2020 2:11 am
Forum: Technical/Operations
Topic: Extra pay for pilots and flight attendants that work the holidays?
Replies: 19
Views: 1755

Re: Extra pay for pilots and flight attendants that work the holidays?

Not a pilot but a mechanic. Holidays count as Sundays so double pay. Total gets calculated for the year and gets paid per month.

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by unimproved
Thu Jan 02, 2020 10:22 am
Forum: Technical/Operations
Topic: Oxygen masks accidentally deployed by pilot - folding question
Replies: 30
Views: 3586

Re: Oxygen masks accidentally deployed by pilot - folding question

On tonight's LHR-PHL flight BA 69, the pilot was trying to activate one oxygen mask for a specific request (not sure what that was, maybe a medical thing?) and accidentally activated all of the oxygen masks. It caused a bit of a stir, but cabin crew quickly came through the cabin to announce it was...

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by unimproved
Sun Dec 22, 2019 4:56 pm
Forum: Technical/Operations
Topic: Pre-hire physical fitness test - Bombardier Tucson
Replies: 5
Views: 1053

Re: Pre-hire physical fitness test - Bombardier Tucson

It's not that bad, mostly safety related things. Eyes, heart issues, etc. No real benchmarks AFAIK... its not the air force.

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by unimproved
Fri Dec 20, 2019 7:10 am
Forum: Technical/Operations
Topic: Meals from Cancelled Flights
Replies: 6
Views: 1898

Re: Meals from Cancelled Flights

I am not sure of the hold over time allowed which is fine if it stored at the correct temps. Okie Hold over times for a delay of a few hours should not be an issue. Planes do not have regular refrigerators like we would have in our homes, so the issue becomes does the aircraft have enough ice/dry i...

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by unimproved
Sun Dec 01, 2019 8:58 am
Forum: Technical/Operations
Topic: Are large business jets/chartered airliners able to fly into airports with no ground support?
Replies: 17
Views: 1743

Re: Are large business jets/chartered airliners able to fly into airports with no ground support?

This is a scenario airlines have to consider in case of a diversion to a smaller, non-online port. You do not need a ground crew to park and secure, or to go from "cold aircraft" to departure. Airstairs would be the one thing you would need in most cases, whether they be integral or provi...

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by unimproved
Wed Nov 27, 2019 5:17 pm
Forum: Technical/Operations
Topic: Does WN start engines faster?
Replies: 15
Views: 3049

Re: Does WN start engines faster?

I've noticed the same on EU carriers, engine 2 start as soon as chocks are removed. Then #1 when tug is gone.

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by unimproved
Tue Nov 26, 2019 9:43 pm
Forum: Technical/Operations
Topic: Black section on aircraft nose?
Replies: 4
Views: 1023

Re: Black section on aircraft nose?

DALMD80 wrote:
That makes sense. But why different sizes?

Because they weren't manufacturer requirements and every airline could make their own version.

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by unimproved
Tue Nov 26, 2019 12:37 pm
Forum: Technical/Operations
Topic: How are airlines painted so accurately?
Replies: 13
Views: 2858

Re: How are airlines painted so accurately?

Size. Being a few inches off isn't noticeable from far away. They're all based on the same technical drawings, yet if we swap a radome a painter will be included by default.

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