757/767 Differences

[Gards]

Does anyone know of any informative websites on the differences between the 757 and 767? I am looking for 50 of them!

Thanks,

Gards

[NISHTA]

You can try this one:

http://www.757.org.uk/diff/index.html

Hope it helps....

[chuzwuza]

Does that mean fifty websites, fifty aircraft or fifty differences between them?

[Brian Fantana]

Here is a useful website, then follow the link to 767 differences

http://www.757.org.uk/

[Bolty McBolt]

1/ You step up into a 767 cockpit and down into a 757

[Floppy Link]

1. Step up / step down as discussed above
2. Bigger
3. Heavier
4. Goes further
5. aileron lockout
6. tail bumper
7. bags/cargo in containers or pallets
8. ADPs in hydraulic systems
9. fuel jettison
10.entry doors electric up and over thing
11.landing gear differences - drag brace and side brace.
12. Bigger engines
13. For manual start valve closure the "volunteer" has to lie down under the engine rather than fish around through a flap on the side.
14. Different flap load relief criteria
15. Thrust measured by EPR (757) and N1 (767) (- on the engines I was used to...)
16. Left hyd system is "heavy" on 757, centre on 767
17. Below 50% in a hyd reservoir will produce an RSVR light on the 757 but a QTY light on the 767
18. RSVR light on 767 also lights for low pneumatic head pressure in the hyd reservoir
19. only centre hyd reservoir in 767 has a standpipe (reserve brakes), all three in 757
20. 757 has a Reserve Brakes switch, 767 has Reserve Brakes and Steering switch.
21. 757 main gear truck tilts nose up, 767 tilts nose down.
22. ALTN GEAR EXTEND on 767 activates solenoid to release the geardoor uplocks, on 757 it activates an elec motor to drive a hyd pump to release the gear and door uplocks.
23. so....in the 767 with total loss of AC power, get the gear down before you lose the battery

Apologies if some of these are rubbish, it's over 2 years since I flew them...and my notes are even older still. But we're almost half way!

[Gards]

757/767

Thanks to all!

[esreverlluf]

Don't forget that there are also differences between 767-200 and 767-300 models and even within these series depending on engine type. And lets not even think about the 767-400!!

There may also be significant differences based on customer options.

[Floppy Link]

24. Different minimum radius of turn on taxiway
25. Different approach category
26. Inboard ailerons on 767 (alluded to in the aileron lockout above)

27.?

[NW3]

27. Automatic cargo fire discharge 767
28. 757 is cat C, 767 is cat D
29. Two isolation switches on 767
30. runway turnoff lights on wing 767, gear 757
31. 767 has nicer jumpseats in flight deck.......
(I'm struggling now )

[wileydog3]

You forgot the world's worst oral question, "How does the recirculation fan work on the 757 versus the 767 and when does it operate and not operate?"

My response that got me in a bit of trouble was, "It operates all the time it is supposed to operate unless it is broken or malfunctioning and then we go into the log, find the proper maintenance code and write it up, right?"

[Panman]

Originally Posted by Floppy Link

10.entry doors electric up and over thing
.......
12. Bigger engines
13. For manual start valve closure the "volunteer" has to lie down under the engine rather than fish around through a flap on the side.
....
15. Thrust measured by EPR (757) and N1 (767) (- on the engines I was used to...)

#10. Not necessarily so - I believe this is a customer option. I have yet to work on a 767 that has electric doors (I am familiar with Monarch, Zoom, Britannia, and Silverjet). The ones I that have worked on, activating the handle lifts the door part of the way, a loaded spring then assists manual movement of the door the rest of the way. It would have been better of just stating that the 757 doors open outwards, while the 767 slide inwards and upwards.

#12. Depends on engine type. RB211 engined 757/767s would be about the same size I think (hazarding a guess as I have only worked the E4s and not the H/G's)

#13. Again depends on engine type.

#15. Engine type yet again. RR's (and PW's I think - haven't worked those so probably wrong - going by hearsay from years ago) use EPR on the 767. GE's use N1.

[mavrik1]

QF 767's have electric doors! That must mean its a better company??? Get over it mate! give-em a break!

[caaardiff]

#10. Not necessarily so - I believe this is a customer option. I have yet to work on a 767 that has electric doors (I am familiar with Monarch, Zoom, Britannia, and Silverjet

All of the above mentioned airlines have electric doors. I'm not entirely certain if all doors are electric, but generally Doors L1 & L2 are electric.
I know Brittania (Thomsonfly) and Silverjets ex TOM 762's have as ive operated them myself. And i've seen Zoom and Monarchs.
However I dont think L4 is electric powered

[misd-agin]

Some of these might be customer aircraft specific -

32. Fuel capacity different between each model.

33. Cockpit size. 767 originally designed for 3 pilots. Early model 767-200's had a really nice sized cockpit. About 3' more space in rear portion of the of cockpit.

29. (corrected?) Air conditioning system has 3 isolation valves 767 and one on the 757.

34. 767 has switch to regular cargo heat in a narrower temperature range (animals in cargo hold)

35. Cockpit shoulder/foot heat different. 767 in flight only. 757 foot heat works on the ground(doing more preflights...)

36. PTU (hydraulic Power Transfer Unit) - 757 for nose wheel steering. flaps/slats, landing gear, HDG(hyd driven generator). 767 PTU - stabilizer trim only

37. Anti ice - 757 - three leading edge slats just outboard of the engines
767 - outermost 3 slats

38. Older 767-200's don't have enough bleed air from engine for anti-ice at idle power so power must be monitored to ensure engine anti-ice operation during descent.

39. 757 has three cabin zone temperature controls. 767 has 4.

40. 757 has two models -200/-300. 767 has three models -200/-300/-400.

41. 757 has one aisle. 767 has two.

42. 757 has standard toilet system. 767 has suction system.

43. 757 refueled right wing. 767 left wing.

44. Fuel temp read right wing 757, left wing 767.

45. (44. tied to hydraulic coolers - 757 one in right wing, two in left wing. 767 = 1 in left wing, 2 in right wing)

46. Stabilizer trim - 757 = C and R hyd systems. 767 = C and L hyd systems.

47. 757 cockpit air comes from the left pack. 767 cockpit air comes from the mix manifold.

48. 757/767 'BLEED' warning lights have different meanings (at least with our engines)

49. 767 has cargo heat switches. 757 is automatic.

50. 757 nose wheel steering, with rudder pedals, is 1 degree greater 767.

51. Alternate and reserve brakes get hydraulic pressure from different sources (757 vs. 767).

52. Antiskid protection different between 757/767 while using reserve brakes.

[Check Airman]

You forgot the world's worst oral question, "How does the recirculation fan work on the 757 versus the 767 and when does it operate and not operate?"

My response that got me in a bit of trouble was, "It operates all the time it is supposed to operate unless it is broken or malfunctioning and then we go into the log, find the proper maintenance code and write it up, right?"

I'd have given you full points for that

[Check Airman]

33. Cockpit size. 767 originally designed for 3 pilots. Early model 767-200's had a really nice sized cockpit. About 3' more space in rear portion of the of cockpit.

A few years ago, I was made to understand that the 757 and 757 cockpits were the same size, which of course caused a problem for Boeing, but they eventually overcame it. Am I mistaken?

[Swedish Steve]

43. 757 refuelled right wing, 767 left wing.
Well go and look on a BA 767 right wing, and you will find A SECOND refuel panel.
The story is that when they bought the aircraft, one of the options was refuelling from right wing as well as left. The guy that ticked this box thought he was buying a second set of refuel couplings. He got a complete refuel panel. (If both are open the left one takes priority)

[Panman]

Originally Posted by caaardiff

All of the above mentioned airlines have electric doors. I'm not entirely certain if all doors are electric, but generally Doors L1 & L2 are electric.

I know Brittania (Thomsonfly) and Silverjets ex TOM 762's have as ive operated them myself. And i've seen Zoom and Monarchs.
However I dont think L4 is electric powered

Well considering that I operated the L1 door on G-SILC, took it apart, and missed having to put it back together and rig it (because i was off that weekend when it was being put back together) - when we were doing the check after it left Thomsonfly and before it went into service with Silverjet......and it sure as hell was not electrically operated then - so they must have had it converted since it left our hangar mid-october.

Monarch's 767 does NOT have electric doors (had to fit a slide on one and three of us had to hang on the door to get it closed because a slide was not fitted and the door was open), neither do ZOOM's (I rigged the L1 door handle on one of them sometime last year).

But of course, I defer to your superior knowledge.

pAnmAn

[caaardiff]

I know the TOM 763's are as i worked with them all summer and have been for many years.
I haven't seen 762's for about 2 years, but when i last saw them they were opened by the crew using the electric controls.

Zoom's 767's do as they fly into Cardiff twice a week, and i was actually with one today as the crew closed the doors. (Assuming we are on about the Canadian reg's??)