737-900ER extra cabin door


#1

I never noticed the extra door behind the wing on the B739ER, the only 900s I see are United and the door has the large window and doesn’t have the grey stripe to identify it like a regular door or emergency exit…
flightaware.com/photos/view/8923 … tes/page/1
Then there is this version, the door has a small circular window and the grey stripe around the door…
flightaware.com/photos/view/1147 … tes/page/1
I thought all exits had to be marked with the grey stripe, or does United not consider that an exit?


#2

Depends on the seating configuration. According to seatguru UA’s 739s are 167 in 2-class + plus :slight_smile: whereas Lion’s are 200+ single class.

Lion needs the extra exits, UA doesn’t but I suspect they are installed anyway for future flexibility.


#3

That makes sense, thanks!


#4

I wonder what they (UA) look like from the inside?


#5

Two missing windows.


#6

The “extra” door is only for emergency use. Some airlines will disable them as long as all 4 overwing hatches function.


#7

From what I read online the 900ER was built to compete with the A321, the A321 has 8 large doors and no over wing exits.
Why wouldn’t 4 large doors and 4 smaller over wing exits work for the 900ER with the 200+ pass. load? FAA regs.?


#8

The evac rate of an overwing exit isn’t the same as a door. See 14 CFR 25.807.


#9

If Boeing would just install roll down windows you could get everybody out in 8 seconds…