Hi, 777fly,

I have another question:
Under emergent landing in an outfield, reverse thrust of trident should be used or not used. why?
That question also from Marshal Lin's crash. According to official report, his plane did not use reverse thrust during emergent landing.

Another one :p:
What is the lowest fuel trident fuel gauge can show?

I appreciate your help!

Chairman Mao Tze- tung and that Trident.
 

Oldwolf;

I'm pretty sure those people at the Military Museum in Beijing will stick to their story that the Trident they have is Chairman Mao's aircraft. The interior is special VIP with only large well upholstered seats. The windows are adorned with frilly lace curtains and the oversized galley looks VIP. You could be correct in implying that the Chairman did not like to fly but it is news to me as I've never seen that in print.
Can't help with your questions as I dont know anything technical about the Trident. Possibly the only way to get to the bottom of this matter is to ask the Mogolian gent to take you to the site. Turn the venture into a bit of a holiday, should be very interesting. Regards,

O.P.

Trident reverse
 

Oldwolf:

Its over 30 years since i flew the Trident, but my recollection is that there was only reverse on the two outer engines and we used it pretty much everywhere. In fact, the only time we used only reverse idle, would be on a long runway where we wanted to exit at the end, for example 10L at Heathrow.

Can't remember the fuel guage minimum.

Hi，O.P.

Mao's last flight was in 1967, as I stated before. He was dorced to take a IL-18. He never took any flight in his life after that. The trident used his name to attract tourists. No plane in Chian was privat except the crashed 256 trident. By that time, Mao had refused to take plane, so Lin was the only one got this honour.

I would like to go to Mongolia, but Mongolians are also unbelievalble. Once they said they've got the "black box" of 256,and heard some fight on board! That is white lie! Anyway, thank you for the suggestions.

regards

reverse
 

Hi, O. & H.

Thank you for your explanation. It is a longtime for 30 years.
Could you recall what is correct to do for the reverse in case you are forced to land some where other than a airfield ?

I know there was an accident in 30, June, 1966, concerning 9K-ACG (trident 1E) with a forced landing. I failed to find the accident report. Do you have any information about its reverse, as well as its gears? No one was killed in that accident, not like 256 accident which killed every one on board.

regards

Oldwolf

The EMERGENCY LANDING & EVACUATION checklist on the Trident 1C called for:

• All the engines to be shut down immediately on touchdown.
  
  
• The Anti-Skid braking system to be selected OFF before touchdown.
  
  
• Continuous, uninterrupted, braking to be used until the aircraft had stopped.

Therefore, by implication, reverse thrust should not have been used during the landing run, although, in theory, reverse thrust could have been used during the landing flare.


The gauges would read down to Zero (empty) and were graduated in 100 kg increments.

The needles on the fuel gauges could show less than zero, and when the aircraft had no electrical power on, all the needles would drop to the “Six O’clock” position on the gauges, clearly below zero.

The quoted gauge tolerances were:

• Inner Tank: Empty ± 30 kg, Full ± 200 kg
  
  
• Outer Tank: Empty ± 15 kg, Full ± 80 kg
  
  
• Centre Tank: Empty ± 60 kg, Full ± 300 kg (Trident 1E only, if fitted)

There was a low fuel level drill to be carried out whenever an inner tank dropped below 400 kg or an outer tank below 200 kg.


I flew the Trident (all marks of them) for many years, and I tend to agree with 777fly in that I’m not convinced this piece of wreckage is from a Trident.

If it is, I don’t think it is an external door or hatch that would have been visible to a pilot doing an external pre-flight inspection.

However, the opinion of a Trident qualified ground engineer would be of much more use to you however than that of a pilot!


Best Regards

Trident Sim

Thank You Trident Sim
 

Hi, Trident Sim,
Thank you so much for your anwsering my questions.
I still have some more questions:
1. I would apreciate it if you could say something about the reason of shut down the reverse thrust on touch down.
2. Wold the pitch of the trident influence the accuracy of the fuel gauge?
3. That wreckage "door" picture was shot in Mongolia rural area. It is hard for them to get a fake piece of plane wreckage there. That is why I tend to believe it. I post another picture here:
http://www.aviationphotoarchive.com/...ile.php?id=193
http://www.aviationphotoarchive.com/...ile.php?id=193
4. I remember, there was a firefighting system in trident. What is its operational sequence? And, what is the media it uses?
Thank you again, and best regards
O.W.