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Questions tagged [boeing-737]

A short- to medium-range twinjet narrow-body airliner, originally introduced in 1968. With over 10,000 aircraft delivered and over 4600 on order, the Boeing 737 is the most popular commercial jetliner in history.

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What are the B737 MAX 8's OEW and max payload?

I have Googled it, but have not found official info on that.
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1answer
126 views

Can computer imposed inputs be overridden on the Boeing 737-MAX?

During Lion Air Flight 610, a Boeing 737-MAX, it seems that the angle of attack sensors caused the software to believe the aircraft was stalling, thus initiating a nose-down pitch to recover from the (...
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1answer
94 views

Which 737 generations doesn't have Alpha Vane (Angle of Attack sensor)?

I was wondering if all generations have this angle of attack sensor, especially after recent 737 MAX Lion Air accident.
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2answers
84 views

How can we calculate the fuel that we need?

Let's assume that we are crossing the Atlantic (about 3,878 miles) with a 737-8 MAX. How can we calculate the fuel that we will use during our flight?
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1answer
173 views

What's the mechanical 'whoosh, whoosh' sound in this video?

Sound in question comes right after the warning sound at 22:57.
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2answers
236 views

Puzzled by description of AoA malfunction theory on recent Lion Air accident [closed]

The theory for the recent Lion Air accident states that the AoA sensor malfunctioned and the airplane systems commanded nose down. Boeing also stated this occurs when the autopilot is disabled. The ...
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3answers
2k views

Can the autopilot (or stall avoidance system?) of the B737 MAX 8 be overridden by sheer force?

A New York Times article from today about the Lion Air Flight 610 crash claims that in order to control the airplane the pilot could have braced his feet on the dashboard and yanked the yoke, or ...
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3answers
2k views

Why did this 737 not take off on first attempt?

This video shows a 737 'near miss' takeoff. I'm curious as to why the aircraft did not take off as expected, i.e. is there anything obvious from the video? I'm assuming the speed and payload would ...
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1answer
197 views

How do I determine the engine thrust required to give a specific climb rate?

New pilot here and I am playing around with a flight simulator game for the B737-800. I need some help understanding where/how one can find out if one has enough engine thrust (%N1) to meet a required ...
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1answer
119 views

What is the farthest commercial flight on a B737-800 currently?

Can anybody name the airline, distance and respective city pair of the farthest (not necessarily longest) nonstop flight on a Boeing B737-800 (currently or in the past)? I'm not interested in empty ...
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8answers
15k views

How safe is the Boeing 737-800 in high winds?

I'm not good with flying. However, on Wednesday morning I'm flying from Gatwick to Bergen, Norway, traveling alone with two young children. I'm trying desperately to not show my kids how afraid I am ...
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3answers
462 views

How many parts does the latest-generation 737 share with the original 737?

There is an old paradox which states that if a boat sails round the world replacing worn out parts as it goes, once it has replaced all of itself is it still the same boat? I choose the 737 because ...
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2answers
368 views

What is the fuel source for the APU on a B737?

Where does the fuel come from that powers the APU on a 737? My understanding is that it is from the left front main fuel tank, but I've also heard, hearsay, it can have it's own source. I know that ...
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3answers
388 views

What is the ALT INTV on the 737's autopilot?

So, I was watching a quick tutorial on the FMC on YouTube. The FMC somehow had a 5000 ft restriction, and the guy got clearance to go higher up, and he set his altitude on the AP panel, and he pressed ...
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1answer
328 views

How do the VNAV and LNAV work on the 737NG?

So, I'm very confused. Im from a Cessna background, no FMC. So, based on my understanding, you could run the autopilot independent of the FMC right? With Speed mode, HDG SEL mode, and V/S mode, am I ...
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3answers
242 views

Is the 737's autopilot part of the FMS or is it a separate entity?

I was watching a tutorial about the FMS and the autopilot in the 737, and I am consfused. I come from a Cessna background, where there is no FMS, there is only the AP (autopilot). So, is the AP a ...
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1answer
207 views

How does Boeing Deliver single aisle jets to South east Asia? [duplicate]

I am not sure if they can fly on full tank gas to their destination (say India or Thailand), but how does Boeing deliver single aisle jets to these destinations. I read somewhere about the process of ...
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1answer
246 views

Are the GPWS callouts recorded with real people or computer generated?

I absolutely love the tone of the GPWS callouts in the Boeing 737NG, and I was wondering whether the callouts where computer generated or a recording of a brilliant voice actor.
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1answer
167 views

Is the 737NG hydraulically controlled or electronically controlled?

I know that the 737NG is not fly-by-wire, but are the control surfaces controlled with hydraulic systems that transfer the input from the pilot to the control surfaces via fluid (hydraulics), or is ...
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1answer
430 views

What would cause an abrupt increase in engine noise after takeoff on the Boeing 737-800?

I flew last week on a Boeing 737-800, I was in row 7, so just in-front of the wings. I know from experience that there is a significant difference in engine noise from the front to the rear of the ...
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0answers
41 views

What is the cargo capacity of a Boeing 737-200/-300? [duplicate]

I would like to know the maximum commercial load of a cargo aircraft B737-200 & 300.
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1answer
360 views

Which radio altimeter is the Boeing 737NG call outs based on?

I'm wondering which of the two Radio Altimeters: Captain (left) or F/O (right), that the 737 does the RA callouts based on. For instance, if the F/O's RA is slightly off, and passes 500ft before the ...
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2answers
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Why is the 737 MAX 7 selling so poorly?

The 737 MAX 7 is the smallest of the four major variants in Boeing's 737 MAX product line; it is intended as the successor to the highly-successful 737-700, and features a higher fuel efficiency, ...
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5answers
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Why aren't 737s or A320s commonly used for transatlantic flights?

Despite newer models of the 737 and A320 families having more than enough range to cross the North Atlantic (and also most of the older models, if they refuel at Gander and\or Shannon along the way; ...
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1answer
716 views

Does the Airbus A320 or Boeing 737 have better resolution screens in the cockpit?

I know this is kind of a specific question so if nobody knows it's fine. Does anybody know if the Airbus A320 or Boeing 737 has better resolution cockpit screens like PFD and ND? ( For the Airbus A320 ...
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0answers
144 views

What is happening with the Southwest Airlines fleet of B737s? [closed]

Another Southwest emergency landing today. Engines catching fire, fan blade separations, windshields cracking, resulting in emergency landings, casualties, and one fatality in just the last few ...
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1answer
410 views

Was the safe landing of Southwest flight 1380 extraordinary or expected?

I've been reading with great interest and concern about the recent Southwest flight that resulted in the first fatality in that airline's history. There's one question I haven't seen answered, though:...
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3answers
384 views

What are the consequences of throttling up past 100% of N1?

The B737 is probably my favorite aircraft and I'm always sure to never throttle past 100% of N1. I was told the aircraft is pretty much totaled if you take N1 past 100% but you can eke out that extra ...
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2answers
2k views

Why does the Boeing 737 have a pitot tube on the tail?

See this Link: Elevator Pitot Can anyone explain why the Boeing 737 has a Pitot tube for the elevators? Wouldn't the airspeed be measured the same from the front of the airplane and the tail? Is ...
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1answer
7k views

What exactly happened in this bird strike incident?

This Boeing 737 was hit by a bird and continued all the way to its final destination, from Prague to Las Palmas. What actually happened here? Was the incident considered a bird strike or an engine ...
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0answers
370 views

When do the Boeing 737 Next Generation aircraft reach End-of-life?

When can we expect the Boeing 737 Next Generation aircraft to reach End-of-life / stop flying? The Next Generation is the name given to the −600/-700/-800/-900 series of the Boeing 737 airliner.
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1answer
487 views

What is the hole located below the 2nd or 3rd window of Boeing 737? [duplicate]

I see there is a hole located below the 2nd or 3rd window. What is its purpose? (Sources: flickr.com and planespotters.net)
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1answer
371 views

Why we had two empty rows on busy Ryanair flight Boeing 737-800 and no one was allowed to seat there? [closed]

Back in 2012 I flew from Tenerife South airport to London Stansted with Ryanair airline. All the tickets for this flight were sold out. But 3rd and 4th row on this Boeing 737-800 were empty (12 empty ...
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1answer
208 views

Are there standard visual cues or other methods for flaring in a B737-800?

Just a newbie in the 737. I've flown 100 hours - in real life - in this lovely beast and found the landing to be very confusing: my main problem is every time just from 50 feet, the sink feels too ...
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1answer
96 views

The AFDS and A/T do not control to a speed which is less than minimum speed for the current flap configuration?

The AFDS and A/T do not control to a speed which is less than minimum speed for the current flap configuration. This speed is approximately 1.3Vs. Minimum speed, FMC speed, or selected speed, ...
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1answer
404 views

What error is left uncorrected when “fast IRS align” is done?

As far as I understand, there are two ways to align the IRSs in B737s: "Full align" and "fast align." For a full alignment, you rotate the IRS selector from OFF to NAV, and for a fast alignment, you ...
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2answers
2k views

Is this a 737-800 or 737 MAX 8?

Is this a 737-800 or 737 MAX 8?
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1answer
163 views

Is this just a generic B737 or does it have a specific name?

Is this just a generic B737 or does it have a specific name?
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1answer
238 views

(B737s) Why is the automatic activation range of the AUTO mode in flight limited to “between idle and 5%”?

This is the explanation on the Engine Start Switch in the 737 series FCOM. What might be the reason why the automatic activation range of the AUTO (or OFF) mode in flight limited to "between idle and ...
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222 views

What is the optimum speed for takeoff flaps?

I took a 737 rating written test yesterday and one of the questions was: What's the optimum speed for takeoff flaps? V2 V2 + 10 V2 + 15 V2 + 20 Anybody knows the answer? I did some research and ...
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1answer
1k views

How can some stretched derivative airplanes have longer range while most have less?

On the one side A321 neo has almost the same range as the A320 neo (250 NM difference), and a LR version of A321 neo will have an even longer range. The same goes for the Dassault Falcon 7x and the ...
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1answer
253 views

Is there a wake turbulence difference between B737s?

I've heard pilots talking about how the new 737s produce much more wake turbulence then the model historically. They described it as similar to the 757, based on anecdotal experience. Have there been ...
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1answer
376 views

Does a Boeing 737 NG have Air Data Modules for the standby Pitot probe and static pressure port?

In other words, how does the ISFD calculate the air data and IR parameters? Or is the ISFD an ADM by itself?
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1answer
1k views

What is this red dashed line between door and cockpit window?

I noticed this dashed line located between the door and cockpit window on this 737-300 while boarding this exact aircraft at Ibiza airport. It seems to have text beside it but I did not have time to ...
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0answers
600 views

Does the 737's “speed trim system” force more aggressive manual trim in manual flight?

Can you say the speed trim system in the B737 forces the pilots to use the manual trim more aggressively during approach and landing than when the system is not at work? The speed trim system (STS) ...
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3answers
3k views

Why is it called “STBY RUD” on a Boeing 737?

(Source: b737.org.uk) Anyone knows why "STBY RUD" is named "STBY RUD" when the selection of the switch position activates the standby hydraulic system as well as the standby rudder system (by opening ...
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1answer
2k views

When are the engine bleed air, APU and packs turned on in the B737?

When do I have to turn on the engine bleed air and APU? In videos I have seen that they are always on, and sometimes they turn them off after take-off. I also have the same question about the packs.
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3answers
3k views

Is center tank fuel required to start the 737-800 engines?

I have been doing some flights with the 737-800 and when there is no fuel in the center tank, the engines won't start. Is it like that in real life?
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2answers
4k views

What are those arrow markings on the wing?

I recently flew on a Boeing 737-800 and found these arrow markings on the wing. What are they for?
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54 views

What happened to the 737's cockpit skylights? [duplicate]

Older-model 737s had very distinctive set of upwards-facing windows above the main, forwards-facing cockpit windows; not unlike those you'd find on MD-80-series airliners and on 727s. These windows ...