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-   -   737 MAX Thread Drift (https://www.airlinepilotforums.com/delta/152082-737-max-thread-drift.html)

Avgeek7248 01-12-2026 10:40 AM

737 MAX Thread Drift
 

Originally Posted by icohftb (Post 3991108)
Supporting 320 deliveries? Last year we hardly had any 320s in the new hire classes / half the class was getting 220s.

as of now those are really the only major growing fleets with consistent deliveries. Curious how much hiring will come with the MAX10 certification. Let alone all the training required for the MAX qual to get everyone checked out. Surprised we haven’t gotten a head start on it. Worries me we either don’t believe it’s very close or that we’re gonna be behind the curve when it finally does. My guess is the former.

iLikeMoose 01-12-2026 01:35 PM


Originally Posted by Avgeek7248 (Post 3991179)
as of now those are really the only major growing fleets with consistent deliveries. Curious how much hiring will come with the MAX10 certification. Let alone all the training required for the MAX qual to get everyone checked out. Surprised we haven’t gotten a head start on it. Worries me we either don’t believe it’s very close or that we’re gonna be behind the curve when it finally does. My guess is the former.

With every new CQ cycle, we are one CQ cycle away from adding a day of MAX training! At least that is what I have been told every time I go to CQ.

Gone Flying 01-12-2026 06:00 PM


Originally Posted by iLikeMoose (Post 3991266)
With every new CQ cycle, we are one CQ cycle away from adding a day of MAX training! At least that is what I have been told every time I go to CQ.

anyone know if this next cycle will start it? If it’s not on this CQ I’d wager 1 of 2 things

1) they have no plans to operate the Max at anytime before q3 2027 (most likley)

or possibly
2) they will only qual 1 base at a time and push max flying to specific bases


alohacessna 01-13-2026 07:28 PM


Originally Posted by Gone Flying (Post 3991362)
anyone know if this next cycle will start it? If it’s not on this CQ I’d wager 1 of 2 things

1) they have no plans to operate the Max at anytime before q3 2027 (most likley)

or possibly
2) they will only qual 1 base at a time and push max flying to specific bases

Expect that initially the Max10 will either be project pilot flown for the first 3-6 months, or that they will do a base by base qual. Think ATL first then the other bases.

Hotel Kilo 01-14-2026 07:38 AM


Originally Posted by Gone Flying (Post 3991362)
anyone know if this next cycle will start it? If it’s not on this CQ I’d wager 1 of 2 things

1) they have no plans to operate the Max at anytime before q3 2027 (most likley)

or possibly
2) they will only qual 1 base at a time and push max flying to specific bases

1 - no. It's not really a new type to our stable like the 220 or 350. It's a 737. We've been operating them for decades and plus that's not the plan I've seen

2. You're getting warmer

gloopy 01-14-2026 01:55 PM


Originally Posted by alohacessna (Post 3991877)
Expect that initially the Max10 will either be project pilot flown for the first 3-6 months, or that they will do a base by base qual. Think ATL first then the other bases.

I don’t think there is any way to “project pilot fly” a fleet for 6 months. It will probably be 1-2 bases initially and there is precedent for that. When DL got the MD-90 I think CVG was the first base. Then it quickly expanded to all the 88 bases. Given that the 321NEO was mostly train by memo, I doubt the MAX spool up will be logistically challenging at all. While not the exact same situation, there’s already 2 sims for it ready to go on day one. From the day the first one enters revenue service I doubt it’ll be a year before all bases are fully qualled to fly it. Most likely 6 months or so max. Not a big deal.

Avgeek7248 01-16-2026 02:50 PM


Originally Posted by Hotel Kilo (Post 3992003)
1 - no. It's not really a new type to our stable like the 220 or 350. It's a 737. We've been operating them for decades and plus that's not the plan I've seen

2. You're getting warmer

You still have to do the required MAX training which requires a sim session now. The MAX is actually quite different from the NG both how it flies and the functionality of the switches and buttons being slightly altered. Also the 10 coming with a touch screen FMC on the FO side.

Gone Flying 01-16-2026 03:40 PM


Originally Posted by Avgeek7248 (Post 3993019)
You still have to do the required MAX training which requires a sim session now. The MAX is actually quite different from the NG both how it flies and the functionality of the switches and buttons being slightly altered. Also the 10 coming with a touch screen FMC on the FO side.

just the FO side?

also who thought a touchscreen was a good idea?

Hotel Kilo 01-16-2026 03:49 PM


Originally Posted by Avgeek7248 (Post 3993019)
You still have to do the required MAX training which requires a sim session now. The MAX is actually quite different from the NG both how it flies and the functionality of the switches and buttons being slightly altered. Also the 10 coming with a touch screen FMC on the FO side.

Most of this is not true especially the flying part.

Yes it has touch screen. Some switches are slightly different. Yes you get a sim. Mostly gonna cover MCAS and a few other things about LEAP.

It's not going to require 6 months of project pilot flying like for the 220 for example as some have stayed on here. UAL, AAL, SWA Alaska seemlessly flip from one model to the next in regular operations. The MAX ain't all that different despite what you think.


Avgeek7248 01-16-2026 04:07 PM


Originally Posted by Hotel Kilo (Post 3993049)
Most of this is not true especially the flying part.

Yes it has touch screen. Some switches are slightly different. Yes you get a sim. Mostly gonna cover MCAS and a few other things about LEAP.

It's not going to require 6 months of project pilot flying like for the 220 for example as some have stayed on here. UAL, AAL, SWA Alaska seemlessly flip from one model to the next in regular operations. The MAX ain't all that different despite what you think.

Yes, it is. Sincerely someone who flew and taught the MAX at a previous airline. Line pilots will
be able to switch no problem. But it’s definitely a much different machine NG to MAX then it is CEO to NEO. The first thing you notice is how much smoother and responsive it is compared to the NG. Think 75 vs 76. HUD is in the FMC instead of the dedicated HGS box. Some of the functions like AIII are different. It’s noticeably slicker coming down. Big screens but the actual PFD is somehow smaller. Let alone the 10 being a massive Frankenstein compared to the already lipsticked pig that is the 9ER.

Avgeek7248 01-16-2026 04:09 PM


Originally Posted by Gone Flying (Post 3993045)
just the FO side?

also who thought a touchscreen was a good idea?

no idea. Same thing with the composite cowl lips that has caused major hurdles in recent years. From my understanding it’s for EICAS implementation in order to access synoptic pages but that’s purely what I was told from folks in the training department with no confirmed source. Beats me mate.

khergan 01-16-2026 04:47 PM


Originally Posted by Avgeek7248 (Post 3993056)
no idea. Same thing with the composite cowl lips that has caused major hurdles in recent years. From my understanding it’s for EICAS implementation in order to access synoptic pages but that’s purely what I was told from folks in the training department with no confirmed source. Beats me mate.

The MAX is a complete non factor to fly. It flies smoother, and there are a handful of differences about systems, starting and displays. Those are easily covered with CBTs and learned within a week or so.

Every other airline with both NG and MAX switches between each regularly, often within the same day, with no issues whatsoever.

gloopy 01-16-2026 05:26 PM


Originally Posted by Avgeek7248 (Post 3993019)
You still have to do the required MAX training which requires a sim session now. The MAX is actually quite different from the NG both how it flies and the functionality of the switches and buttons being slightly altered. Also the 10 coming with a touch screen FMC on the FO side.

I thought all screens were touch screens…

Flyweight 01-16-2026 05:45 PM


Originally Posted by gloopy (Post 3993094)
I thought all screens were touch screens…

a320 all the screens are touch screens.

Planetrain 01-16-2026 05:52 PM


Originally Posted by gloopy (Post 3993094)
I thought all screens were touch screens…

https://i.imgur.com/ieWsHR9_d.webp?m...fidelity=grand
Gloopy! It was you?!

tripled 01-16-2026 06:46 PM


Originally Posted by Planetrain (Post 3993099)

username checks out?

ChronicFatigue 01-16-2026 08:36 PM

Honestly noticed minimal difference between the Max 8 and -800. The MAX was a smooth, quieter ride but besides that.

Avgeek7248 01-16-2026 11:32 PM


Originally Posted by khergan (Post 3993076)
The MAX is a complete non factor to fly. It flies smoother, and there are a handful of differences about systems, starting and displays. Those are easily covered with CBTs and learned within a week or so.

Every other airline with both NG and MAX switches between each regularly, often within the same day, with no issues whatsoever.

it was very common to fly a MAX and NG in the same day. Plenty of times we’d go from a -700 to a MAX9 one after the other. That being said their is very noticeable changes IMO from flying the MAX8/9 to a regular NG along the pitch and roll axis as well as switches in auto modes doing completely different things. Not a massive difference for the average line pilot who doesn’t have intimate knowledge of the systems but they are there. My original answer to HK was simply you can’t just spin the entire pilot group up rapidly to fly the MAX. The most logical way is to implement the MAX training during CQ which another poster stated. HK proceeded to tell them off as if they were clueless on the topic and brush it off as something that is nothing to worry about. I just wanted to clarify that it was not the case and that it would be prudent for the airline to qualify most pilots in the fleet early instead of getting caught with their pants down when the jet finally does show up. Which sounds like is slowly getting closer and closer.

mattmatt 01-17-2026 06:23 AM

oh. i thought it said 737 max schedule drift. never mind.

Cruz5350 01-17-2026 07:58 AM

Put me in the camp of it’s literally almost the exact same. I came from Alaska and would switch between different jets in the same day, and never found it to be an issue.

Viper25 01-17-2026 08:00 AM

Is it really significant, that during the 1% of the flight when you’re hand flying, that roll and pitch have a small bit of difference in sensitivity, when pilots are making small inputs 99.9% of the time anyway?

What is the threat here?

Cruz5350 01-17-2026 08:21 AM


Originally Posted by Viper25 (Post 3993315)
Is it really significant, that during the 1% of the flight when you’re hand flying, that roll and pitch have a small bit of difference in sensitivity, when pilots are making small inputs 99.9% of the time anyway?

What is the threat here?

Short answer no, on approach I found the Max9 to be slightly worse than a -900 in control harmony.

Meme In Command 01-17-2026 08:36 AM

RJ scum that regularly swap around the CRJ 700/900 and the Mighty Deuce are very unimpressed

khergan 01-17-2026 09:21 AM


Originally Posted by Cruz5350 (Post 3993312)
Put me in the camp of it’s literally almost the exact same. I came from Alaska and would switch between different jets in the same day, and never found it to be an issue.

Nice to see someone else who's actually flown both and knows it's a non factor.

The only annoying thing is accidentally lookin for the flap indicator in the wrong place.

Avgeek7248 01-17-2026 09:35 AM


Originally Posted by Cruz5350 (Post 3993334)
Short answer no, on approach I found the Max9 to be slightly worse than a -900 in control harmony.

Interesting I was at AS and found the opposite. The straight wing 900’s flew nicer then the 9ER’s albeit the yoke was as loose as a 1960 Chevy pickup. The MAX was the tightest from my experience as well as everyone I talked to on the line and training department. The -700 was everyone’s favorite particularly the freighters. I always could notice a difference going between a 9ER and the 9. Even with trips where’d you’d fly almost every variant. Maybe it’s placebo but from everyone I talked to while I was there they seemed to come to the same conclusion.

Avgeek7248 01-17-2026 09:38 AM


Originally Posted by khergan (Post 3993377)
Nice to see someone else who's actually flown both and knows it's a non factor.

The only annoying thing is accidentally lookin for the flap indicator in the wrong place.

You didn’t think the most annoying thing was losing half your ND with the ENG/SYS page up?

FlyingSlowly 01-17-2026 10:39 AM


Originally Posted by khergan (Post 3993377)
Nice to see someone else who's actually flown both and knows it's a non factor.

The only annoying thing is accidentally lookin for the flap indicator in the wrong place.

It's more annoying if your company puts audio panels in different places (MAX vs NG). Then you're always reaching to talk (R/T I/C switch) in the wrong spot... Maybe thats why so many of our pilots just reach for the yoke when I'm flying... Too bad it would seem to cost too much to add the glareshield PTT button to the NGs!

From someone who has touched all currently 121 operating NG and Max, the Max8 is hands down the best flying 737. Followed by the Max9. I suspect you guys will enjoy the Max10s more than the 800s or 900ERs... You'll probably only think about the differences when you wonder how much longer till the wheels hit... Or the latest software change that causes the Max to sometimes require 100 sec of motoring (yes, 1:40 on the timer) to spin up and cool down a hot engine before starting it :D

169todepot 01-17-2026 11:04 AM

Sooooo when are they showing up then???

1Taco 01-17-2026 12:08 PM


Originally Posted by 169todepot (Post 3993442)
Sooooo when are they showing up then???

q1 2027 is the latest word.

ShegotheD 01-17-2026 01:04 PM


Originally Posted by 1Taco (Post 3993468)
q1 2027 is the latest word.

The next 60 days are crucial. Management will be going to Washington next week for a meeting with BA. If they don't receive the news they want, there are 7,757s sitting in short-term storage that will require extensive heavy checks. If we don't get the desired outcome, those 757s will be approved for heavy checks and returned to service. In an ideal scenario, we expect to receive 18 MAX10s by the end of 2027, assuming they can overcome the HUD hurdle.

169todepot 01-17-2026 03:28 PM


Originally Posted by ShegotheD (Post 3993485)
The next 60 days are crucial. Management will be going to Washington next week for a meeting with BA. If they don't receive the news they want, there are 7,757s sitting in short-term storage that will require extensive heavy checks. If we don't get the desired outcome, those 757s will be approved for heavy checks and returned to service. In an ideal scenario, we expect to receive 18 MAX10s by the end of 2027, assuming they can overcome the HUD hurdle.

Or we get the 757’s back and get the Max’s too. Seems like the wrong time to be retiring anything.

iLikeMoose 01-17-2026 04:56 PM

Are we really gonna delay the airplanes for the HUDs? Maybe it wont matter, since by next quarter the date will have shifted from Q1 2027 to Q2 2027.

PNWFlyer 01-17-2026 05:35 PM


Originally Posted by Gone Flying (Post 3993045)
just the FO side?

also who thought a touchscreen was a good idea?

the people who buy airplanes. The touch screens are significantly lighter. And they work in turbulence just like you iPhone does.

ShegotheD 01-18-2026 04:56 AM


Originally Posted by 169todepot (Post 3993532)
Or we get the 757’s back and get the Max’s too. Seems like the wrong time to be retiring anything.

One of the big drivers for the 75/76 fleet is the lack of NPS rating and efficiency. We all know Delta is an NPS-driven airline.

iaflyer 01-18-2026 07:52 AM


Originally Posted by ShegotheD (Post 3993636)
One of the big drivers for the 75/76 fleet is the lack of NPS rating and efficiency. We all know Delta is an NPS-driven airline.

The last two times I parked next to a 757 at the gate, one kept being delayed for MX, three mechanics were in the wheel wells wiping something down and trying to fix something. The other was delayed 7 (!) hours... I bet those customers did not rate us highly..

Hotel Kilo 01-18-2026 07:56 AM


Originally Posted by iaflyer (Post 3993700)
The last two times I parked next to a 757 at the gate, one kept being delayed for MX, three mechanics were in the wheel wells wiping something down and trying to fix something. The other was delayed 7 (!) hours... I bet those customers did not rate us highly..

Well they're not too happy about NEOs turning around or diverting for fume events either. I mean if we're going to play that game. Had a delay on a 350 not long ago due to a bad flight control computer. ECAM proc didn't clear it. Back to the gate and a 22 hour delay. It happens out there and not just to the 75s

Cruz5350 01-18-2026 08:05 AM


Originally Posted by Avgeek7248 (Post 3993386)
Interesting I was at AS and found the opposite. The straight wing 900’s flew nicer then the 9ER’s albeit the yoke was as loose as a 1960 Chevy pickup. The MAX was the tightest from my experience as well as everyone I talked to on the line and training department. The -700 was everyone’s favorite particularly the freighters. I always could notice a difference going between a 9ER and the 9. Even with trips where’d you’d fly almost every variant. Maybe it’s placebo but from everyone I talked to while I was there they seemed to come to the same conclusion.

I loved my time in the -700’s and bet the Max7 will be great. I hated the -800, I felt the yoke was noticeably heavier in pitch than a -900/Max9. Never could figure out why but every trip that I had in it the AP would be used more often.

gloopy 01-18-2026 09:26 AM


Originally Posted by PNWFlyer (Post 3993576)
The touch screens…work in turbulence just like you iPhone does.

what does that mean?

notEnuf 01-18-2026 11:11 AM


Originally Posted by gloopy (Post 3993733)
what does that mean?

He must have meant iPad.

PNWFlyer 01-18-2026 01:38 PM


Originally Posted by notEnuf (Post 3993759)
He must have meant iPad.

iPad iPhone they have touch screens and they work in turbulence. You don’t need raised buttons. They are only doing one until they have enough screens to replace them all. also, where is this HUD delay rumor coming from? Certainly not coming from Collins.


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