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A short- to medium-range twinjet narrow-body airliner, originally introduced in 1968. With over 10,500 aircraft delivered and over 4500 on order, the Boeing 737 is the most popular commercial jetliner in history.

11 votes

Can stored/leased 737s be used to substitute for grounded MAXs?

The main problem is in the United States, the 737 Classics are banned beginning December 2017, due to fuel tank inerting requirements. In particular, Southwest's Classic replacement schedule was drive …
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7 votes

Why can’t more older 737s be retrofitted with more newer winglets?

Winglets change the spanwise loading on the wing. By increasing the effective span of the wing, lift is increased towards the tips of the wing. With more lift there, you get an increased bending momen …
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10 votes

How long is the training to get a Boeing 777 rating if one has a 737-200 rating?

A flight school can offer an "abbreviated type rating course" which takes into account skills from previous type ratings, assuming you have flown an adequate number of flight hours on those ratings. …
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5 votes
Accepted

Who controls the cabin air temperature?

The 737-400, -800, and -900 have two cabin air conditioning zones plus the cockpit. The rest have one plus the cockpit. Both packs are on in normal operation because they are slightly more efficient …
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4 votes

Is the Boeing 737 MAX 8 MCAS exceptional in operating when autopilot is off?

All large swept-wing aircraft have a yaw damper, which is always active. It takes an input from a yaw gyro and applies rudder inputs in order to counter Dutch roll.
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15 votes
Accepted

Why are the engines on the MAX and neo prone to bowing?

Rotor bowing is not unique to this generation of engines. It was an issue with the early IAE V2500. I remember initially they would have somebody manually rotate the fan some time after shutdown. This …
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1 vote

How much does it cost to ground a B737 max aircraft for an airline?

To answer the second part, airliners come with all sorts of warranties. This is because any small problem on an aircraft easily can reach into the tens to hundreds of thousands of dollars. This makes …
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0 votes
Accepted

Height from the ground of aircrafts doors

Yes, the airframers' airport planning guides will have this information. Airbus Boeing/McDonnell Douglas Former Bombardier A220 CRJ and Dash 8 Embraer Door heights are usually specified as a range bec …
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