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DC8 Cockpit Question  
User currently offlineLMML 14/32 From Malta, joined Jan 2001, 2565 posts, RR: 6
Posted (4 years 8 months 2 weeks 4 days 3 hours ago) and read 5033 times:

I was searching some pictures of DC8 cockpits and I was amased how much this has evolved over the years.

I came across this picture and have a couple of questions: What is the large lever with the yellow knob on the FO's side, and where are the radio controls located?


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Photo © John Padgett



12 replies: All unread, jump to last
 
User currently offlineLongHauler From Canada, joined Mar 2004, 5003 posts, RR: 43
Reply 1, posted (4 years 8 months 2 weeks 3 days 21 hours ago) and read 4987 times:

Wow that's a pretty advanced cockpit for a DC-8 ... dual FMSs!

The radio controls used to be where the FMSs are now. Likely, they are internal to the FMS. We have a few planes that do this ... radio page on the MCDU.

I checked my DC-8 manuals that include the DC-8-41, -43, -53, -54F, -61 and -63 and that yellow knob is not there. I am curious too.



Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night
User currently offlineLongHauler From Canada, joined Mar 2004, 5003 posts, RR: 43
Reply 2, posted (4 years 8 months 2 weeks 3 days 19 hours ago) and read 4934 times:

On another note ...

One can tell that is an ex Air Canada DC-8.

The hydraulic pressure gauges on the lower part of the Captain's panel is the best indication. Trans-Canada Air Lines (pre-Air Canada) had originally intended the DC-8 to be a two man cockpit! I am not kidding!

A lot of the controls and indications on the Second Officer/Flight Engineer's panel ended up on forward panels in the anticipation of a two man cockpit. As history shows, this was never allowed. All DC-8s built for TCA/AC therefore had this unusual layout.

When it came time to sell the aircraft, it was a detriment as they were unlike any other DC-8's on the earth. Shoot, it even was a problem when AC tried to sell the DC-8 simulators!



Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night
User currently offlineFr8Mech From United States of America, joined Sep 2005, 5470 posts, RR: 14
Reply 3, posted (4 years 8 months 2 weeks 3 days 18 hours ago) and read 4895 times:

The yellow knob is the gust lock. When the knob (and the attached handle) are rotated aft, the elevator fairs and is locked in place. Something happens at the rudder also, but I can't recall.

The radio caontrols are on the overhead.



When seconds count...the police are minutes away.
User currently offlineJETPILOT From United States of America, joined May 1999, 3130 posts, RR: 29
Reply 4, posted (4 years 8 months 2 weeks 3 days 15 hours ago) and read 4819 times:

The gust lock handle also mechanically locks the thrust levers in place.

I thought he was asking about the rain removal lever but then I realized that it's not yellow.


User currently offlineLemmy From United States of America, joined Dec 2004, 258 posts, RR: 0
Reply 5, posted (4 years 8 months 2 weeks 3 days 14 hours ago) and read 4789 times:

That landing gear lever has to be a foot long! Do you really need that much leverage to raise and lower the gear?


I am a patient boy ...
User currently offlineFr8Mech From United States of America, joined Sep 2005, 5470 posts, RR: 14
Reply 6, posted (4 years 8 months 2 weeks 3 days 12 hours ago) and read 4752 times:



Quoting JETPILOT (Reply 4):
The gust lock handle also mechanically locks the thrust levers in place.

Just 2 and 3.

Quoting Lemmy (Reply 5):
That landing gear lever has to be a foot long! Do you really need that much leverage to raise and lower the gear?

You're taking me back a few years, but the handle also acts as the emergency release for the doors, if I recall correctly.



When seconds count...the police are minutes away.
User currently offlineLongHauler From Canada, joined Mar 2004, 5003 posts, RR: 43
Reply 7, posted (4 years 8 months 2 weeks 3 days 12 hours ago) and read 4749 times:



Quoting Fr8Mech (Reply 3):
The radio caontrols are on the overhead.

'

The overhead housed the HFs, Selcal, Transponder, ADFs, Radar and CVR.

The VHF and ILS controls were immediately aft of the autopilot controls on the control (lower) pedestal. Aft of them were the audio panels. I see in the pic that the autopilot controls remain, but the VHF/ILS and audio panels are replaced by the MCDUs.

Are you saying that in this conversion, the VHF/ILS and audio panels were moved to the upper panel? I dont doubt you, just curious, as it would be cumbersome.



Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night
User currently offlineFr8Mech From United States of America, joined Sep 2005, 5470 posts, RR: 14
Reply 8, posted (4 years 8 months 2 weeks 3 days 7 hours ago) and read 4688 times:



Quoting LongHauler (Reply 7):
Are you saying that in this conversion, the VHF/ILS and audio panels were moved to the upper panel? I dont doubt you, just curious, as it would be cumbersome.

I don't know about this particular mod, but on UPS aircraft, the #1 com head (frequency selector) was on the overhead, the #2 on the pedestal. The VOR/ILS frequency selectors were on the glareshield. Both audio select panels were on the pedestal.


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When seconds count...the police are minutes away.
User currently offlineJETPILOT From United States of America, joined May 1999, 3130 posts, RR: 29
Reply 9, posted (4 years 8 months 2 weeks 3 days 3 hours ago) and read 4648 times:

The landing gear lever is that long so enough leverage can be applied to the lever to shear a rivet allowing the gear door and gear uplocks to be mechanically released and allow the gear to freefall into place in case of hydrualic failure.

User currently offlineLMML 14/32 From Malta, joined Jan 2001, 2565 posts, RR: 6
Reply 10, posted (4 years 8 months 2 weeks 3 days 2 hours ago) and read 4639 times:



Quoting Fr8Mech (Reply 3):
The radio caontrols are on the overhead

Highly unlikely. There is nothing that remotely resembles a VHF module in the overhead panel.

Quoting LongHauler (Reply 1):
The radio controls used to be where the FMSs are now. Likely, they are internal to the FMS. We have a few planes that do this ... radio page on the MCDU.

I'd am more inclined to beleive this.


User currently offlineBuzz From United States of America, joined Nov 1999, 697 posts, RR: 21
Reply 11, posted (4 years 8 months 2 weeks 2 days 11 hours ago) and read 4481 times:

Hi LMML 14/32, Buzz here. Big yellow knob? Of course somebody answered the question.
I like the movie "Airplane" where the Capt. operates the gear shift knob when it's time to push back (grin)
g'day


User currently offlineViscount724 From Switzerland, joined Oct 2006, 25473 posts, RR: 22
Reply 12, posted (4 years 8 months 2 weeks 2 days 8 hours ago) and read 4441 times:



Quoting LongHauler (Reply 2):
One can tell that is an ex Air Canada DC-8.

That aircrft with original operator, as originally delivered as a passenger -63.


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Photo © Pierre Langlois



After conversion to -63F freighter.


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Photo © Michel Gilliand



After conversion to -73F with CFM56 engines.


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Photo © Bob Logan - PrestwickAviationPhotography



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