Search found 3147 matches

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by Dalmd88
Wed Oct 21, 2020 10:23 pm
Forum: Technical/Operations
Topic: Fasteners on composite aircraft
Replies: 10
Views: 1038

Re: Fasteners on composite aircraft

It's been a while since I did structural work and I didn't do too much with composite panels, but I think for most panels there were never tolerance fit fasteners through composite. I think like Ti, they were always clearance fit through the composite panel. Seems like they were always 'wet install'...

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by Dalmd88
Wed Oct 21, 2020 10:19 pm
Forum: Civil Aviation
Topic: Delta Narrow Body Thread - 2020
Replies: 550
Views: 62323

Re: Delta Narrow Body Thread - 2020

Thanks for the reply. Maint sure gets expensive. I think an A check is weekly, a B check is monthly, a C check is yearly and a D check is every 4 years. There are some max hours allowed to be flown too for each of the 4 checks as well. Then there is Landing Gear overhaul and Engine Mx and overhaul....

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by Dalmd88
Fri Oct 16, 2020 5:54 pm
Forum: Technical/Operations
Topic: Commonality between the 737 Original and 737NG?
Replies: 29
Views: 3971

Re: Commonality between the 737 Original and 737NG?

I’m sure there’s some things that are the same. Maybe the windshield glass. Maybe the passenger window panes. Maybe the radome. From a airframe structures view they are very similar. I think the NG skin panels are improved, but most of the frame and stringer structure shares a lot with the classic....

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by Dalmd88
Fri Oct 16, 2020 5:48 pm
Forum: Technical/Operations
Topic: When does it become safe to approach an engine after shutoff?
Replies: 13
Views: 1393

Re: When does it become safe to approach an engine after shutoff?

I am pretty sure OSHA would have frowned upon some of the things done on a DC-10 to reduce vibration on the wing by changing some of the bolts on the spinner. I would say that we are OSHA compliant when performing a task like that. If not it could result in unpaid days off. You don't change the spi...

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by Dalmd88
Fri Oct 16, 2020 1:16 pm
Forum: Civil Aviation
Topic: Is the RR 787 engine problem fixed yet?
Replies: 62
Views: 11005

Re: Is the RR 787 engine problem fixed yet?

I think Rolls has turned the corner on the T1000 issues. That is as long as the new blade sets meet the expectations over the long term. We were told that as of June there were no more AOG aircraft in the system that Rolls was responsible for. The work through the shops has continued since that time...

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by Dalmd88
Mon Oct 12, 2020 8:33 pm
Forum: Civil Aviation
Topic: Rumor: DL looking to trade 717s for 737 Max
Replies: 526
Views: 96326

Re: Could Delta Order 737 MAX?

According to Reuters, Boeing has had discussions with Delta Air Lines to take up to 40 Boeing already-built 737 MAX aircraft, no doubt at a HUGE discount. Source: https://www.reuters.com/article/boeing-737max-delta/boeing-courting-delta-others-to-take-737-max-white-tails-sources-idUSKBN26M5JK As a ...

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by Dalmd88
Mon Oct 05, 2020 12:53 pm
Forum: Civil Aviation
Topic: American Hangar LGA Razed
Replies: 28
Views: 6944

Re: American Hangar LGA Razed

I don't think those hangars have been used for aircraft maintenance for many years now. I don't think they had the roof height for any AA planes to fit. All of the aircraft maintenance at LGA is done outside.

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by Dalmd88
Sat Oct 03, 2020 1:59 pm
Forum: Civil Aviation
Topic: Fate of 717 post Delta
Replies: 192
Views: 30877

Re: Fate of 717 post Delta

I cannot create a scenario where Boeing paying the costs is to their advantage. Boeing it turns out is selling 717s to Delta. No one would make a 10 year commitment to an old worn plane where none have less than 30k cycles with an expensive to overhaul engine. Boeing makes most of their profit sell...

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by Dalmd88
Fri Oct 02, 2020 8:19 pm
Forum: Civil Aviation
Topic: Does MESA really deserve its "bad" reputation
Replies: 53
Views: 5380

Re: Does MESA really deserve its "bad" reputation

It was an eons ago but my personal experience with Mesa was not great. They were dumping their very used Be1900. some of the oldest ones flying. I worked for another low budget operation in the Midwest at the time. We picked up 4-5 of their old planes. They were absolute garbage. The wiring in the c...

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by Dalmd88
Fri Oct 02, 2020 8:09 pm
Forum: Civil Aviation
Topic: Fate of 717 post Delta
Replies: 192
Views: 30877

Re: Fate of 717 post Delta

Wayex- I read a response from Lightsaber noting that the correct engine is the BR700-715 and coming clean he was incorrect. Can't find it now. On either the A319 or B738 is there a way to use the electric starter to rotate the engine sufficient to get cooling. Even 1 or 2 RPM should provide a nice ...

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by Dalmd88
Thu Oct 01, 2020 12:03 am
Forum: Civil Aviation
Topic: Fate of 717 post Delta
Replies: 192
Views: 30877

Re: Fate of 717 post Delta

These contracts are typical at US vendors. For whom it doesn't matter, except the military will do cost+ for batches, but they have learned to buy the minimum economic lot. Boeing paid vendors to keep the 717 running. The issue is, certain vendors won't take a payment. It doesn't matter who you are...

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by Dalmd88
Fri Sep 18, 2020 2:25 pm
Forum: Civil Aviation
Topic: Is DL taking delivery of A350’s from NRT to avoid tariffs?
Replies: 207
Views: 30816

Re: Is DL taking delivery of A350’s from NRT to avoid tariffs?

I know the cruise industry is pretty much stuck in port, but they are a prime example of a similar tactic. For most of their existence companies like Carnival and Royal Caribbean have been US companies, but ever notice the name on the back of the ships? Ships are almost always registered in places l...

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by Dalmd88
Sun Sep 06, 2020 2:11 pm
Forum: Technical/Operations
Topic: Oxygen masks dropped accidentally
Replies: 10
Views: 1611

Re: Oxygen masks dropped accidentally

Cabin drop checks are done during most of the C checks I've worked on. The O2 generators have a life span and need to be replaced. I can't recall the frequency but It might be 10 years. The masks them selves used to be good for the life of the airplane, but I recall we began changing them out as a c...

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by Dalmd88
Sat Sep 05, 2020 1:42 pm
Forum: Technical/Operations
Topic: Insurance of Commercial Planes for the Airlines - Questions
Replies: 5
Views: 1533

Re: Insurance of Commercial Planes for the Airlines - Questions

I have no idea whether my airline (US based - over 100 aircraft - all Airbus narrowbodies) can be considered representative or not, but our airline according to our certificate of insurance is covered by 14 different insurers. The aircraft are listed by tail number/serial number and when new aircra...

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by Dalmd88
Thu Sep 03, 2020 10:35 am
Forum: Technical/Operations
Topic: Boeing 737-800NG Flaptrack circle
Replies: 12
Views: 1520

Re: Boeing 737-800NG Flaptrack circle

If I recall there is also a lube point at the bolts. So it gets removed at every wing lube visit. Same with the little diamond panel in DL_Mech's pic.

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by Dalmd88
Sun Aug 23, 2020 3:25 pm
Forum: Civil Aviation
Topic: Updated: DL retired MD-80/90s quickly
Replies: 1195
Views: 261702

Re: Updated: DL retired MD-80/90s quickly

Most of the differences are the mounts on the engine, and therefore the test cell. And the IAE requirement for the cell to accommodate tilt and vibration. The canny Kiwis designed and built an adaptor to replicate under and side attachment, which presumably can be replicated for the right fee. Delt...

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by Dalmd88
Fri Aug 21, 2020 2:35 pm
Forum: Civil Aviation
Topic: Updated: DL retired MD-80/90s quickly
Replies: 1195
Views: 261702

Re: Updated: DL retired MD-80/90s quickly

Does anyone know why the MD-90 was retired so quickly from airline fleets? It's not like it was even an "old" aircraft or that its demise was due to COVID, it was already being retired from airline service as early as the beginning of the 2010s despite deliveries only ending in 2000, plus...

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by Dalmd88
Fri Aug 21, 2020 3:51 am
Forum: Civil Aviation
Topic: Updated: DL retired MD-80/90s quickly
Replies: 1195
Views: 261702

Re: Updated: DL retired MD-80/90s quickly

Pre Covid the MD-90's were to go by the end of 2022. I assume that Delta had enough parts to keep them in the air until then. If so are those parts still around? Do the engines on the fleet have enough green time left that it would be cost effective to use up that green time instead of overhauls. I...

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by Dalmd88
Sat Aug 15, 2020 1:57 pm
Forum: Travel, Polls & Preferences
Topic: What Airports did Airlines train at in the Old Days?
Replies: 34
Views: 2384

Re: What Airports did Airlines train at in the Old Days?

I remember seeing DL 737 doing work at DAB back in the late 80's. They only flew the 727 in for pax flights.

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by Dalmd88
Thu Aug 06, 2020 6:02 pm
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

Airlines do not want to cut the workforce. When the demand comes back it would mean recalls and the inevitable new hires for those that don't come back. For skilled areas that is a large burden for just a few months (hopefully). When Delta layed off AMT's back in 2004-2005, most did not come back. ...

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by Dalmd88
Thu Aug 06, 2020 12:20 am
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

It appears Payroll extension is on the way https://www.reuters.com/article/us-health-coronavirus-usa-airlines-exclu/republican-senators-back-extending-25-billion-payroll-aid-for-u-s-airlines-shares-jump-idUSKCN2512QE The question is, will the airlines take it? They don't need all of these employees...

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by Dalmd88
Wed Aug 05, 2020 6:31 pm
Forum: Technical/Operations
Topic: What aircraft's parts does Boeing still manufacture?
Replies: 4
Views: 1482

Re: What aircraft's parts does Boeing still manufacture?

Boeing still stocks the parts for all the planes you listed. Not everything is 'in stock', but they will sell you a belly skin for a 727 I would still bet.The lead time might be 6-8 months. Boeing might not actually make it. They might have always been contract parts. You would be surprised how much...

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by Dalmd88
Wed Aug 05, 2020 12:23 pm
Forum: Technical/Operations
Topic: A380s being painted white before being scrapped
Replies: 10
Views: 2934

Re: A380s being painted white before being scrapped

For a trip to the scrapper the plane is not getting repainted. If the logo is a painted on logo it is many times just painted over. I've seen it done by paint roller on the ramp. Many airlines do not like seeing their logo featured in scrapyards. Now for a lease return it may be a condition of lease...

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by Dalmd88
Tue Aug 04, 2020 1:15 pm
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

It isn't a matter of denying the claim (although most of the airlines agreed to not contest any of them). It is that when they are recalled they don't show up and then you have to go back through the recall process again with another employee - it just rolls the target down the calendar. Recall sho...

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by Dalmd88
Sat Aug 01, 2020 1:42 pm
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a

So, now that the dust is starting to settle on the employees taking the retirement packages. It looks like approximately 500 above/below wing employees in MSP have taken the package. Looking like a little over 1000 above/below wing employees have taken it in ATL, add to that over 30 OSM (front line...

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by Dalmd88
Sat Aug 01, 2020 2:34 am
Forum: Technical/Operations
Topic: B752 Engine Options?
Replies: 17
Views: 2836

Re: B752 Engine Options?

From the history side of the equation the Pratt was cheaper new. It did have a few more teething problems though. Rumor has it Rolls approached Delta after we had about ten 757 delivered and were already doing pylon mods on the Pratts. We will pay to re-engine your ten planes if you switch all new d...

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by Dalmd88
Sat Aug 01, 2020 2:15 am
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

Big week for a lot of 752's (16) returning from storage and being put into service for August. Its apparent, particularly with the middle seat blocking, they want the extra seats on the larger narrowbody aircraft. It will be interesting to see to what extent additional aircraft are removed from sto...

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by Dalmd88
Fri Jul 31, 2020 1:30 pm
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

I saw the new smaller Delta first hand today. I work in IT. We had 530 people put in for the package. We had a conference call for our group this morning to say goodbye to those who chose to leave. One of the harder things I've done in my 33 years at DL. We've had almost entire groups of department...

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by Dalmd88
Fri Jul 31, 2020 4:42 am
Forum: Technical/Operations
Topic: Engineer examining engine on landing
Replies: 25
Views: 3851

Re: Engineer examining engine on landing

When I worked for a US 121 carrier, there was a "through flight" inspection required at the end of every flight. Generally, before we left the aircraft an MX engineer stuck his/her head in the cockpit to make sure the aircraft was fine. When I worked for SQ and for QR, a ground engineer m...

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by Dalmd88
Fri Jul 31, 2020 4:22 am
Forum: Technical/Operations
Topic: College Graduate looking for my future in Aerospace/ Aviation but in a dilemma? Pursing the American Dream.
Replies: 25
Views: 2041

Re: College Graduate looking for my future in Aerospace/ Aviation but in a dilemma? Pursing the American Dream.

If I was in your shoes I would stay away from being a pilot. Your age is working against you on this part of aviation. You would spend a bunch of money and take a long time getting your certs. Then likely you will spend a good portion of your career gaining the hours at very low wages to get a 'good...

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by Dalmd88
Thu Jul 30, 2020 8:34 pm
Forum: Technical/Operations
Topic: Engineer examining engine on landing
Replies: 25
Views: 3851

Re: Engineer examining engine on landing

When I worked in Line mtc we did thru flight inspections pretty regularly. They were not required by our mtc plan but we did them when ever we were not busy with another issue. The logic was, I would rather do a walk around and find something before it was a callout by the crew. Usually if they call...

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by Dalmd88
Sun Jul 26, 2020 1:38 pm
Forum: Technical/Operations
Topic: 737 Electrical System Questions
Replies: 6
Views: 1248

Re: 737 Electrical System Questions

It's been while since I did airframe work, but this rang a little bell in my memory. If TR2 or TR3 fail there is no light in flight, but doesn't the TRU Fail light on the ground for a failure of any of the three units. Don't bother the pilots in flight of the single 2 or 3 failure, but indicate the...

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by Dalmd88
Sat Jul 25, 2020 2:30 pm
Forum: Technical/Operations
Topic: 737 Electrical System Questions
Replies: 6
Views: 1248

Re: 737 Electrical System Questions

DanielBednar wrote: 4) Regrading the TR UNIT light: why does this light illuminate (in-flight) if TR 1 or TR 2 & TR 3 fail? Why not just have the light illuminate (in-flight) if any of them fail? Why is that specific arrangement required for the illumination of that light? TR3 picks up when TR2 ...

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by Dalmd88
Fri Jul 24, 2020 5:49 pm
Forum: Civil Aviation
Topic: FAA EAD - CFM-56-7 and -3
Replies: 13
Views: 4255

Re: FAA EAD - B737 NG Engine Failure

I've heard this has been found by numerous operators that stored these planes for the pandemic. This system has been problematic since day one on the NG. The failure rate on the entire engine bleed system has had many upgrades. When I worked line mtc we were told only do the scheduled check on one a...

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by Dalmd88
Tue Jul 21, 2020 8:47 pm
Forum: Technical/Operations
Topic: Emergency oxygen cylinders European airlines
Replies: 14
Views: 2714

Re: Emergency oxygen cylinders European airlines

At Delta for most of the larger line stations we had a bottle filling station. I had to be trained to fill the bottles. Just a short 45 min computer course. We could fill the flight deck crew bottle or the walk arounds for the cabin. The big supply bottles were source locally and we never had to shi...

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by Dalmd88
Tue Jul 21, 2020 8:34 pm
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

so how was the fleet before the pandemic and how its going to be after this retirements ? B752: YE2019: 111 Current: 37 in-service, 74 in temp storage Projection: No official announcement of any pending decisions. Its possible there could be some early retirements or rationalization of subfleets. T...

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by Dalmd88
Tue Jul 21, 2020 10:15 am
Forum: Civil Aviation
Topic: Delta Aircraft Refurbishment Thread - 2020
Replies: 182
Views: 35254

Re: Delta Aircraft Refurbishment Thread - 2020

All heavy checks for the MD88/90 were outsourced since 2004 I believe. QRO was the primary location. No heavy checks were done at MSP since the NW merger. There could have been some C checks done at MSP. Those are a very light check for the Mad Dogs. Usually only a day or two visit. SLC never did an...

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by Dalmd88
Fri Jul 17, 2020 1:51 pm
Forum: Technical/Operations
Topic: Cabin Air Recirculation Filters against Covid-19? (ATA 21)
Replies: 46
Views: 5416

Re: Cabin Air Recirculation Filters against Covid-19? (ATA 21)

The air exchange rate in even the worst aircraft is about 10 times better than most public buildings. Air flows in a cellular profile through the cabin. Air enters the cabin from the middle of the ceiling and the gasper vents above the seats and flow directly down to return air vents at the bottom ...

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by Dalmd88
Fri Jul 17, 2020 12:00 am
Forum: Technical/Operations
Topic: Cabin Air Recirculation Filters against Covid-19? (ATA 21)
Replies: 46
Views: 5416

Re: Cabin Air Recirculation Filters against Covid-19? (ATA 21)

The air exchange rate in even the worst aircraft is about 10 times better than most public buildings. Air flows in a cellular profile through the cabin. Air enters the cabin from the middle of the ceiling and the gasper vents above the seats and flow directly down to return air vents at the bottom o...

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by Dalmd88
Thu Jul 16, 2020 1:15 pm
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

I would also like to hear a clearer plan/timeline for insourcing work. There's been bits and pieces, but nothing comprehensive. I'm not expecting anything with any specificity until early August after all the retirements are finalized then a week or two to put things together, but from the way they...

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by Dalmd88
Thu Jul 09, 2020 9:58 pm
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

DL announced the closing of three line mtc stations this week. All are relatively small with less than 20 AMT each, BDL, CHS, and SAV. No firm date announced, just by the end of the year. They made the announcement before the retirement/early departure window closes which was a nice move. BDL is the...

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by Dalmd88
Thu Jul 09, 2020 9:43 pm
Forum: Civil Aviation
Topic: Delta Narrow Body Thread - 2020
Replies: 550
Views: 62323

Re: Delta Narrow Body Thread - 2020

Another advantage of keeping the BHM planes in storage is the relative closeness to ATL. Mtc crews from ATL Line can go over regularly to perform the required storage mtc tasks. I think MCI still has a DL mtc crew but I bet it is very small.

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by Dalmd88
Thu Jul 09, 2020 2:33 pm
Forum: Technical/Operations
Topic: When do aircraft engine RTS?
Replies: 7
Views: 1661

Re: When do aircraft engine RTS?

It could also be a 'green time' engine. That is an engine that has been in service on an airplane and removed with life left before overhaul. Their RTS request may be just do what is required to prepare the engine for a new install. We would call it a Zero Time check in my airline. Suspect it would ...

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by Dalmd88
Thu Jul 09, 2020 2:13 pm
Forum: Technical/Operations
Topic: PTU in Airbus?
Replies: 11
Views: 1570

Re: PTU in Airbus?

- A340: I can't find any diagrams or other info, but given it is basically the same aircraft as the A330 I would guess the architecture is similar but with more pumps since it has more engines. Yes, the general layout is basically the same, but with the same amount of pumps. Eng 1 and Eng 4 drive t...

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by Dalmd88
Tue Jul 07, 2020 7:08 pm
Forum: Technical/Operations
Topic: When do aircraft engine RTS?
Replies: 7
Views: 1661

Re: When do aircraft engine RTS?

What kind of MRO? An engine shop that does a engine shop visit? That usually means an engine run in a test cell. The serviceability tag usually follows a successful test. Or if no test cell run is required when they finish building the motor back up and the paperwork is cleared. It might have a cond...

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by Dalmd88
Tue Jun 30, 2020 12:30 am
Forum: Technical/Operations
Topic: Moses Lake - Stored 737-8MAX Nosewheel - secured to concrete blocks
Replies: 7
Views: 2782

Re: Moses Lake - Stored 737-8MAX Nosewheel - secured to concrete blocks

I don't think the tires are taped. I think it's just cover placed over the tire to protect it from UV light.

As for why the blocks, It is pretty windy in Moses Lake. Boeing uses that airport of all the extreme cross wind landing test.

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by Dalmd88
Fri Jun 26, 2020 12:53 pm
Forum: Technical/Operations
Topic: About Transformer Rectifier Units (28 V DC)
Replies: 4
Views: 1222

Re: About Transformer Rectifier Units (28 V DC)

The new VFSG really are not that new. The MD90 used this 'wild' system from the start. I never played with them much when I was in the hangar or line mtc. I do recall the system had some big teething problems when the plane was first introduced. I think this system was the most problematic of the MD...

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by Dalmd88
Thu Jun 25, 2020 2:41 am
Forum: Civil Aviation
Topic: Delta plans to emerge a "smaller" carrier
Replies: 2164
Views: 384844

Re: Delta plans to emerge a "smaller" carrier

I think the retirement rate for Tech Ops will be high. There are a lot of mechanics that are in the window that this package is aimed at. Over 60 just needing a push to go. For many medical was a hold up. The employee was eligible for Medicare but not the spouse whom is dependent on the employee for...

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by Dalmd88
Thu Jun 25, 2020 2:30 am
Forum: Civil Aviation
Topic: Delta A350 in El Paso
Replies: 41
Views: 10236

Re: Delta A350 in El Paso

What is do odd about widebodies at “place like ELP”? What is it with El Paso? Is it that “odd”? 5th safest large city in the US this year, 300 days of sun......hmmm, I wonder where you live.... El Paso has has widebody service as estoy as 1973 and up to la late 80’s early 90’s. AA with 762s, and bo...

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by Dalmd88
Tue Jun 23, 2020 3:18 pm
Forum: Civil Aviation
Topic: Delta A350 in El Paso
Replies: 41
Views: 10236

Re: Delta A350 in El Paso

A couple of questions come to mind: Why does the US Dept of Defense use Delta, a private company, to transport government employees? Don't the Feds have contracts with charter or other operators to fly troops? Are there particular advantages to using the A350 for these routes? Delta offers charters...

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