Search found 8145 matches

by fr8mech
Tue Apr 20, 2021 2:49 am
Forum: Technical/Operations
Topic: Is it possible to access the cargo compartment from the passenger compartment?
Replies: 48
Views: 4247

Re: Is it possible to access the cargo compartment from the passenger compartment?

During initial checkout as an FE on 747-200's we got to open the hatch and proceed down to the nose gear/EE compartment. Basically it was to show us how to drop the nose gear if the two primary emergency methods failed. It involved unscrewing a bunch of bolts to release a brace of some sort. Even t...

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by fr8mech
Mon Apr 19, 2021 9:52 pm
Forum: Technical/Operations
Topic: Is it possible to access the cargo compartment from the passenger compartment?
Replies: 48
Views: 4247

Re: Is it possible to access the cargo compartment from the passenger compartment?

fr8mech, I have a couple of questions: 1. I assume there is a locking mechanism/you need a key to gain access from the outside? Otherwise anyone can gain access into a 744 parked on the tarmac? 2. Would you get a Door Open/Unsafe light in the cockpit if it is not properly secured? 3. It would be im...

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by fr8mech
Mon Apr 19, 2021 1:05 pm
Forum: Technical/Operations
Topic: Is it possible to access the cargo compartment from the passenger compartment?
Replies: 48
Views: 4247

Re: Is it possible to access the cargo compartment from the passenger compartment?

We were once stuck on the tarmac in a 744, and somebody came into the cabin by way of the nose wheel and through a hatch on the cabin floor. Can anyone enlighten me how that worked? They came through the EE Bay access door that is aft of the nose gear. Climbed the integral ladder into the passenger...

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by fr8mech
Sun Apr 18, 2021 8:18 pm
Forum: Technical/Operations
Topic: Is it possible to access the cargo compartment from the passenger compartment?
Replies: 48
Views: 4247

Re: Is it possible to access the cargo compartment from the passenger compartment?

The A340 has an integrated foldable ladder to access the aircraft from outside. The B747 has one also. A little simpler than that contraption. I want to say our A300 have them too, but I haven’t been in the avionics bay in a long time. Of course, those aren’t som much as access ladder as convenienc...

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by fr8mech
Sat Apr 17, 2021 7:20 am
Forum: Technical/Operations
Topic: Is it possible to access the cargo compartment from the passenger compartment?
Replies: 48
Views: 4247

Re: Is it possible to access the cargo compartment from the passenger compartment?

Is it true that you can also escape from the avionics bay to the tarmac by opening another hatch that gives access to the nose gear bay? Best regards, Hendric No, not to the nose gear well, but directly out of the fuselage. At least on all the types of worked on. I've never seen access to the nose ...

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by fr8mech
Mon Apr 12, 2021 2:17 pm
Forum: Technical/Operations
Topic: Crippled by a windshield wiper
Replies: 25
Views: 2447

Re: Crippled by a windshield wiper

Quick question for all you pilots out there: do you actually use the damn things? I’ve ridden jumpseat countless times, and the only time I’ve seen them in actual use was sitting at the end of the runway for takeoff, and the crew activates them for a few seconds so they can have a “clear” view of th...

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by fr8mech
Mon Apr 12, 2021 2:01 pm
Forum: Technical/Operations
Topic: Pitot tube temperature
Replies: 10
Views: 1581

Re: Pitot tube temperature

Adding automatic pitot tube heating activation adds an additional point of failure. Nice when you a have a "mainline airliner", visiting these "hellholes" rarely, only to get back to the safety of well-stocked base in a more pleasant locale after a quick turn. Does it really? Yo...

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by fr8mech
Mon Apr 12, 2021 10:46 am
Forum: Technical/Operations
Topic: Crippled by a windshield wiper
Replies: 25
Views: 2447

Re: Crippled by a windshield wiper

I have no knowledge of Airbus or FAA requirements - and I intend no criticism of the crew - but assuming that no other circuits were controlled by that breaker, would the crew not have been allowed to continued with the breaker pulled, resetting it for landing if the wipers were required? That real...

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by fr8mech
Sun Apr 11, 2021 6:58 pm
Forum: Technical/Operations
Topic: Pitot tube temperature
Replies: 10
Views: 1581

Re: Pitot tube temperature

And no matter how hot, all insects are burned away, and no organic matter blockage. We’ve pulled plenty of charred insect carcasses from the tubes if the covers were left off in the spring/summer. Damn bugs only need a few minutes after the probes cool down to get in there and do their thing. Of co...

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by fr8mech
Sun Apr 11, 2021 6:29 pm
Forum: Technical/Operations
Topic: Crippled by a windshield wiper
Replies: 25
Views: 2447

Re: Crippled by a windshield wiper

I would be more concerned that they couldn't shut the wiper down by pulling its breaker! Pulling the breaker will stop the wiper. They were trying to get the wiper system to operate normally by cycling the breaker. Cycling the breaker is a normal troubleshooting technique used to ‘reset’ components...

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by fr8mech
Sun Apr 11, 2021 5:07 pm
Forum: Technical/Operations
Topic: Pitot tube temperature
Replies: 10
Views: 1581

Re: Pitot tube temperature

For whatever reason, I didn’t read through the whole thing...just looked at the pictures, our B767 AMM has a color picture of a thermal image of a pitot/static probe in operation. The image showed a max temp of 550.8F, a min temp of 119.2F with an average temp of 238.6F. I do not know the time inter...

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by fr8mech
Sat Apr 10, 2021 1:40 am
Forum: Technical/Operations
Topic: Red lights in gears bay. What for?
Replies: 10
Views: 2929

Re: Red lights in gears bay. What for?

Those are bright red lights, so I guess the ground crew can't miss them if they come on when the aircraft is on the ground. I guess the message is "RUN!" Presumably, the birds don't care. Not quite "RUN", but more like "Be Aware". I don't know a thing about the doors o...

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by fr8mech
Fri Apr 09, 2021 8:34 pm
Forum: Non-Aviation
Topic: Tea or Coffee?
Replies: 53
Views: 2189

Re: Tea or Coffee?

What is correct amount of water to use with a single tea bag, one that you might find from Bigelow Green Tea?? I was always led to understand that the proper tea ‘cup’...and coffee, for that matter...is 6 ounces. For the record, if you give me 6 ounces of coffee, it better be espresso, Greek Coffee...

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by fr8mech
Fri Apr 09, 2021 3:51 am
Forum: Non-Aviation
Topic: Countries and Continents you have been to
Replies: 39
Views: 1791

Re: Countries and Continents you have been to

You ask this on an aviation forum? I'll include only places where I've slept. North America -USA -Mexico -Canada -Bahamas -Cayman Islands -Jamaica Europe -Iceland -Scotland -France -Germany (West) -Austria -Switzerland -Italy -Greece Asia -China (Hong Kong) -Korea (South) -Saudia Arabia -India Austr...

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by fr8mech
Fri Apr 09, 2021 1:48 am
Forum: Non-Aviation
Topic: Tea or Coffee?
Replies: 53
Views: 2189

Re: Tea or Coffee?

Like others here, I drink both. Coffee when I wake up. Coffee through the day. Chamomile Tea, while sitting at my desk anytime after midnight. But, I must start my day with coffee. A few years ago, my wife asked me if I was willing to give up coffee for Lent. I told her that the sacrifice endured is...

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by fr8mech
Thu Apr 08, 2021 7:40 pm
Forum: Technical/Operations
Topic: Which planes run out of engine hours first
Replies: 9
Views: 1938

Re: Which planes run out of engine hours first

Thanks. So a CRJ is a likely candidate where it is due it's N.th expensive engine overhaul which is enough to send it to a scrapper. I just read that closer...the airframe is NOT due its engine overhaul, the engine is due the overhaul. The engine gets pulled and a serviceable one is installed in it...

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by fr8mech
Thu Apr 08, 2021 6:57 pm
Forum: Technical/Operations
Topic: Which planes run out of engine hours first
Replies: 9
Views: 1938

Re: Which planes run out of engine hours first

Engines are tracked unrelated to the wing they might currently reside under. When covid first hit we were playing musical chairs with engines for weeks, just to move the ones with nearing maintenence to the frames going into storage. Engines are no more “attached” to an airframe, than the wheels as...

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by fr8mech
Thu Apr 08, 2021 12:28 am
Forum: Technical/Operations
Topic: Which planes run out of engine hours first
Replies: 9
Views: 1938

Re: Which planes run out of engine hours first

The only time I've ever seen a new engine on an aircraft is when it was delivered. We pull engines all the time, way before the airframe is even close to going away. When the time comes to scrap an airframe, the engines will be replaced with high time engines that are no longer economical to overhau...

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by fr8mech
Tue Apr 06, 2021 3:16 pm
Forum: Technical/Operations
Topic: modern maintenance and lawyers
Replies: 7
Views: 1781

Re: modern maintenance and lawyers

Engine data is sent to the operator; normally directly to maintenance control, not to the engine or aircraft manufacturer. e38 That’s all going to depend on the operator and the contract he has with the manufacturer. I’m pretty darn sure that if you’re operating under a power by the hour contract, ...

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by fr8mech
Sun Apr 04, 2021 12:13 am
Forum: Technical/Operations
Topic: Boeing 757 Under wing Impact resistant panels
Replies: 3
Views: 1161

Re: Boeing 757 Under wing Impact resistant panels

The original service bulletin, SB757-28-0019 states:

“...resistance to penetration from engine debris or objects thrown from the aircraft tires.”

Later on in the SB the additional “...caused by impact of...separated aircraft structure...”

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by fr8mech
Wed Mar 31, 2021 1:18 am
Forum: Technical/Operations
Topic: Why do all new-build cargo aircraft have lower deck cargo areas?
Replies: 10
Views: 2321

Re: Why do all new-build cargo aircraft have lower deck cargo areas?

UA857 wrote:
Any thoughts to why cargo aircraft have lower deck cargo areas?


Beyond the ridiculous cost of certifying and maintaining fuel tanks in the cargo compartment?

Because we carry cargo in the cargo compartments. We fill them up, just like we fill up the main deck.

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by fr8mech
Sun Mar 28, 2021 3:32 pm
Forum: Non-Aviation
Topic: Mesh Wifi
Replies: 12
Views: 1102

Re: Mesh Wifi

avoid same band wireless||wireless extenders. you get more reach but less throughput. Agreed. I have a desk draw with a couple of different ones in there, that just didn’t do what I wanted/needed. Having never used anything but the eero, I can’t compare it to other manufacturers, but I will tell yo...

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by fr8mech
Sat Mar 27, 2021 10:34 pm
Forum: Non-Aviation
Topic: Mesh Wifi
Replies: 12
Views: 1102

Re: Mesh Wifi

I’ve had a 3 unit EERO in the house for several years. Eliminated all my dead spots and extended the range well out into my deck, so I can take a TV out there and watch movies by the fire pit. No problems at all. I wouldn't invest in Wifi 5 based solutions anymore. Best regards Thomas That’s a non-a...

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by fr8mech
Mon Mar 22, 2021 12:44 pm
Forum: Technical/Operations
Topic: Why not wider runways?
Replies: 31
Views: 4412

Re: Why not wider runways?

Just where would it end. Right now the emphasis is to land on the centerline, if your proposal was adopted would it be the centerline +/- 10 feet/20 feet? If that is good enough how about approach speed +/- 10 knots? What would you do if you had to divert to a runway which was not expanded? Flying ...

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by fr8mech
Sun Mar 21, 2021 6:50 pm
Forum: Technical/Operations
Topic: Why are engines on planes changed so often?
Replies: 18
Views: 3439

Re: Why are engines on planes changed so often?

What is QEC? Quick Engine Change. It means the engine is ready to hang and run. Some operators will maintain their spare engines with certain components missing. The expectation is to take these components from the old engine and install them on the new engine. Takes time. At PanAm, we used to keep...

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by fr8mech
Sat Mar 20, 2021 11:03 pm
Forum: Technical/Operations
Topic: Smoke or Fumes Removal on B747
Replies: 2
Views: 1283

Re: Smoke or Fumes Removal on B747

You really don’t open the door too far. The B747 door is, by far, the most complicated door I’ve every dealt with in maintenance. When you rotate the handle, the first few degrees of travel will pop the gates open, top and bottom. The 20 or so degrees of further travel will move the hinge side of th...

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by fr8mech
Sat Mar 20, 2021 6:11 pm
Forum: Non-Aviation
Topic: Fast food you avoid
Replies: 68
Views: 3657

Re: Fast food you avoid

When I lived in the Chicago area, the only time we'd go to White Castle was after our band played a gig, we packed up all our gear (we didn't have roadies) and there was nothing else open at that hour :smile: I guess it’s been about 20 years or so, but after a late night fire...or even a false alar...

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by fr8mech
Sat Mar 20, 2021 11:22 am
Forum: Technical/Operations
Topic: How are aircraft scheduled for major airlines?
Replies: 4
Views: 1226

Re: How are aircraft scheduled for major airlines?

Heavy maintenance schedules are planned years in advance. Planned engine changes are weeks in advance. Modifications are also planned well in advance. Maintenance planning works closely with routing to ensure an aircraft is where it needs to be to get the scheduled maintenance done. Whether it’s rou...

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by fr8mech
Thu Mar 18, 2021 9:26 am
Forum: Technical/Operations
Topic: Door Latch Question
Replies: 18
Views: 2186

Re: Door Latch Question

Interesting! Seeing the responses of most, it is: 1. A known issue but no cause for alarm. 2. It is seen to have a low risk/impact even with seldom occurrence. 3. No permanent fix available nor planned terminating action in the near future (linked to item 1 and 2). Had a fun read to learn a thing o...

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by fr8mech
Thu Mar 18, 2021 3:25 am
Forum: Non-Aviation
Topic: Fast food you avoid
Replies: 68
Views: 3657

Re: Fast food you avoid

I avoid it all, except one item...The mighty Egg McMuffin. 300 calories of the perfectly balanced...for me...blend of carbs, protein and fat. And, tasty. I would scarf one down after a morning 6 mile run. I still eat one at the beginning of a long drive. The perfect food. Except for pizza. That is a...

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by fr8mech
Sun Mar 14, 2021 7:57 pm
Forum: Technical/Operations
Topic: Door Latch Question
Replies: 18
Views: 2186

Re: Door Latch Question

DarQuiet wrote:
I have so many questions... Was the aircraft released under MEL for this case?


There is nothing wrong with this door. This is just a sloppy dispatch. The person who pulled the jetway should have faired the handle.

Why did Boeing design it this way? Because it’s a simple design.

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by fr8mech
Thu Mar 11, 2021 12:43 pm
Forum: Technical/Operations
Topic: Door Latch Question
Replies: 18
Views: 2186

Re: Door Latch Question

I assume something in the handle mechanism that connects the exterior handle to the rest is broken. Maybe the spline or shaft sheared off My assumption is the door is just fine. Can the exterior handle engage (or disengage) the handle mechanism in any position? I'm not familiar with the 737... but ...

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by fr8mech
Thu Mar 11, 2021 11:43 am
Forum: Technical/Operations
Topic: Door Latch Question
Replies: 18
Views: 2186

Re: Door Latch Question

But, that door is latched. The handle just wasn’t stowed properly. Sloppy, but still locked.

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by fr8mech
Wed Mar 10, 2021 12:20 pm
Forum: Non-Aviation
Topic: COVID Health Department Follow-Ups
Replies: 16
Views: 935

Re: COVID Health Department Follow-Ups

Why did you bother getting tested in the first place? Does it really matter? This wasn’t my first test. I’ve been tested in the past due to exposure and due to travel. My employer, and the kids’ schools have asked that family members be tested, or the kids stay home if there has been out-of-state t...

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by fr8mech
Wed Mar 10, 2021 2:09 am
Forum: Non-Aviation
Topic: COVID Health Department Follow-Ups
Replies: 16
Views: 935

Re: COVID Health Department Follow-Ups

It seems tedious to you as your answers are known, but for data analysis the issue is in the anomalies. Maybe someone else breaks isolation. Maybe they got the vaccine Maybe they spread the disease. Maybe someone who had the vaccine got sick again ( is vaccine as effective as Moderna/Pfizer say). H...

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by fr8mech
Tue Mar 09, 2021 7:25 pm
Forum: Non-Aviation
Topic: COVID Health Department Follow-Ups
Replies: 16
Views: 935

Re: COVID Health Department Follow-Ups

Translates to something like "do pointless actions but make it look like something is being done". At work we call it “making visual progress”. We'll push an aircraft out if the hangar before it’s done and finish it up outside just to make it look like progress has been made. That’s all t...

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by fr8mech
Mon Mar 08, 2021 9:36 pm
Forum: Non-Aviation
Topic: COVID Health Department Follow-Ups
Replies: 16
Views: 935

COVID Health Department Follow-Ups

So, I’m COVID positive with symptoms. So is my daughter. Wife and son are positive but asymptomatic. I was the first positive, but I think it was my daughter that brought it home. Regardless, the day after I tested positive on the rapid test, I received a phone call from the health department provid...

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by fr8mech
Fri Mar 05, 2021 7:48 pm
Forum: Technical/Operations
Topic: Can the IRS be aligned in an hangar?
Replies: 7
Views: 1406

Re: Can the IRS be aligned in an hangar?

If so, what can't be done in hangar other than starting up the engines? I heard WX radar is also harmful to people around when used in closed spaces. Yes, you can align the IRUs. Yes, you can put the RADAR in test. The transmitter operates for less than a second. The rest of the test basically test...

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by fr8mech
Sat Feb 27, 2021 5:00 pm
Forum: Technical/Operations
Topic: Ligthning Strikes.
Replies: 12
Views: 2440

Re: Ligthning Strikes.

It seems to me that our MD10's, MD11's and B767's do not have as many strikes as our B757's which seem to be a magnet for lightning strikes. Any thoughts? Gregory My experience is the opposite. In the spring, it seems there’s an MD-11 or a B767 out of service somewhere in our system for a lightning...

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by fr8mech
Thu Feb 25, 2021 10:10 pm
Forum: Technical/Operations
Topic: Cargo Pilots Dropped Off At Passenger Terminal
Replies: 16
Views: 2109

Re: Cargo Pilots Dropped Off At Passenger Terminal

When I was a flight mechanic with Evergreen, we’d frequently make tech or fuel stops. They’d often park us as a gate, since it was probably more convenient than a hardstand.

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by fr8mech
Fri Feb 19, 2021 1:56 am
Forum: Technical/Operations
Topic: Is it true that when flying air pressure won't allow the cabin door to open?
Replies: 22
Views: 3037

Re: Is it true that when flying air pressure won't allow the cabin door to open?

n92r03 wrote:
On the L-1011, I seem to remember the door sliding vertical, up into the ceiling. Am I way off base here or was that the case? Last flight on one was ~1995, DL, LAX-SAN.


Yes, as they do on the DC10/MD11 & the B767. The doors still move in before they move up.

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by fr8mech
Wed Feb 17, 2021 1:22 am
Forum: Technical/Operations
Topic: How do passenger windows get so scratched up?
Replies: 7
Views: 1962

Re: How do passenger windows get so scratched up?

Crazing is common.

Environmental conditions can also cause mechanical damage. Age/UV damage. Cleaning crews.

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by fr8mech
Tue Feb 16, 2021 8:13 pm
Forum: Technical/Operations
Topic: Do ground vehicles in airports run on jet fuel or regular diesel?
Replies: 31
Views: 3767

Re: Do ground vehicles in airports run on jet fuel or regular diesel?

Isn’t military Jet fuel basically the same thing? Just with a lower freeze point? I mean, military jets use Jet A when they come into a civilian field for refuel. Anecdotally, back in the early 90’s, as Desert Shield/Desert Storm were spinning up, and our Jumbos were operating more and more CRAF mi...

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by fr8mech
Mon Feb 15, 2021 2:59 pm
Forum: Technical/Operations
Topic: Do ground vehicles in airports run on jet fuel or regular diesel?
Replies: 31
Views: 3767

Re: Do ground vehicles in airports run on jet fuel or regular diesel?

At previous operators, we would use sump fuel in our GPU’s and air starts. Now, sump fuel is taken away by Plant Engineering. I’ve no clue what they do with it.

Can the equipment run on it? Yes. Is it ‘safe’ to do so? I’ve no clue, I’m not a diesel mechanic.

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by fr8mech
Mon Feb 15, 2021 2:57 pm
Forum: Technical/Operations
Topic: Powering systems inside a hangar
Replies: 14
Views: 1634

Re: Powering systems inside a hangar

Just a quick add-on question. For aircraft to be powered up - do you need to switch battery on, or will external power completely do the trick? I could imagine some sort of protection on the battery circuit preventing that, but Bat/GPU running parallel with switch on each seems a simpler solution. ...

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by fr8mech
Tue Feb 02, 2021 9:04 pm
Forum: Technical/Operations
Topic: Average number of cycles for aircraft tyres ? Who are the main suppliers ?
Replies: 20
Views: 3745

Re: Average number of cycles for aircraft tyres ? Who are the main suppliers ?

Most AMMs will have both nose wheel tires changed at a time, it’s not just for ease of work. I’ve worked most Boeing’s, a Douglas or two, and some Airbus...even a Lockheed, and I don’t I’ve ever seen a recommendation to replace both nose wheel assemblies. Yes, I have seen a comparison check in resp...

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by fr8mech
Fri Jan 29, 2021 9:04 pm
Forum: Technical/Operations
Topic: Refueling wide bodies
Replies: 31
Views: 4769

Re: Refueling wide bodies

Along the same lines, do airlines strategically shop around for fuel at airports/states/countries with lower prices? Major airlines have people...really software, now, I guess, whose job it is to decide whether it’s more cost efficient...or sometimes, schedule/marketing efficient, to tanker fuel th...

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by fr8mech
Fri Jan 29, 2021 8:33 pm
Forum: Technical/Operations
Topic: Saudia Flight 163 HZ-AHK Accident Analysis
Replies: 34
Views: 3394

Re: Saudia Flight 163 HZ-AHK Accident Analysis

You know why I watch Netflix or why I watch a series on other services after the season has ended, rather than watching on broadcast TV? Because I like to watch The whole season drop at once, not piece-meal. Please get to the point, or don’t. It doesn’t matter anymore. You’ve lost my interest...like...

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by fr8mech
Wed Jan 27, 2021 9:12 pm
Forum: Technical/Operations
Topic: Average number of cycles for aircraft tyres ? Who are the main suppliers ?
Replies: 20
Views: 3745

Re: Average number of cycles for aircraft tyres ? Who are the main suppliers ?

Do they require tire rotation and balancing like a regular car? Rotated? No. Balanced at buildup. I looked at our jumbos a while ago, and I seem to recall between 70 & 80 cycles for the body gear and 100 - 120 for the wing. Can’t recall if I looked at the nose. We had an aircraft eating tires i...

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by fr8mech
Sun Jan 17, 2021 11:20 pm
Forum: Technical/Operations
Topic: Boeing 737 Engine Bleed Precooler System Defiency
Replies: 5
Views: 1217

Re: Boeing 737 Engine Bleed Precooler System Defiency

if the defective situation is unknown , lower efficiency is acceptable and safe. But if the defective situation is noticed , lower efficiency unacceptable and unsafe, and the airplane must fly with restriction according MEL. Is there no contradiction in this? Not at all. That’s why we have schedule...

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