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Post Info TOPIC: Crash Salvage number two.


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Crash Salvage number two.


This particular job I was sent on my own and had with me my two "Boi's" Sukarno and Jacob as my assistants.

This is an article from the aviation Digest, and outlines the pilots plight. He told me his biggest problem was stopping the passengers from jumping out of the aircraft. As below quoted.

"Concerned as we inevitably are with human error and judgement, it is often difficult to avoid presenting a rather negative view of air safety in the review of accidents and incidents published in the Digest. For this reason it is a welcome change when we can feature the positive side of accident prevention with an instance in which pilot skill and initiative have averted an almost certain catastrophe. The story that follows is one such case.

 

Many airstrips in the highlands of Papua New Guinea are notorious for their difficulty, and the one at Usarumpia, in Eastern New Guinea, is no exception. This one-way strip lies in rugged mountainous terrain at an elevation of 5700 feet. It is only 450 metres long, with a gradient of 1:10, and the lower end of the strip drops sharply into a mountain stream. Once having begun a take-off, there is little opportunity to abandon it without being involved in a disaster.

It was from this strip one morning that a private pilot planned to fly three passengers to the village of Marawaka 11 kilometres away. Immediately before take-off the pilot checked the controls of his Cessna 206 for full and free movement, then, satisfied they felt normal and were functioning correctly, lined up on the strip and opened the throttle. But about half way down the strip, as he eased back the control wheel to lift off, it moved freely in his hand and there was no response from the elevator. The question of abandoning the take-off flashed through the pilot's mind but he immediately thought better of it as an accident would have been inevitable.

Rotating of its own accord, the aircraft became airborne with the nose continuing to rise quite sharply. The pilot reduced power a little and the nose dropped back to a more normal climbing attitude. The airspeed fluctuated, but never rose above about 70 knots, and the pilot then found that as the aileron and rudder controls were still functioning, he could control the aircraft's attitude by varying the engine power. In an effort to gain a greater measure of control, the pilot tried different flap settings, but found the best result with the 15 degree flap setting he had used for take-off. He also experimented with the eleva­tor trim but as the aircraft was slow to respond, he decided that he was better off controlling the attitude with power.

Ahead of the aircraft now lay the twisting valley leading through the mountains to Marawaka, the aircraft's destination. With such limited attitude control, the pilot decided not to attempt to climb above the high terrain hemming the aircraft in on either side. As the one-way strip at Marawaka has the same elevation as Usarum­pia and is aligned with the valley, the pilot saw that his best hope was to continue up the valley to Marawaka and attempt a landing there.

Reporting his problem and his intentions to Lae Flight Service, the pilot followed the tortuous route through the valley. Though he was able to steer with ailerons and rudder, the pilot found that turbulence and the need for frequent power changes made it impossible to maintain anything like a constant attitude. But at last the strip at Marawaka hove into sight and the pilot reported he would be making a straight-in approach. Crossing the threshold at about 10 feet, the pilot reduced power slightly to descend, then increased it again to try and flare the aircraft. But the aircraft did not respond quickly enough and struck the ground heavily in a nose­down attitude, breaking off the nose leg. The aircraft bounced, struck the ground again and skidded off the strip to the right where, now at low speed, it ran down an embankment and somersaulted quite gently over on to its back. None of the four occupants were injured.

When the damaged aircraft was examined later, the bolt connecting the elevator push rod to the elevator torque tube horn was found to be missing, together with its lock nut. As a result the elevators had become disconnected, depriv­ing the pilot of longitudinal control.

Major repairs had been carried out to the rear fuselage of the aircraft a few weeks before the accident, during which the elevator controls had been disconnected. The bolt had been refitted on completion of the work, but apparently its retain­ing nut had been either not properly tightened or left off altogether. Though the bolt must have been at least partially in place while the pilot was carrying out his take-off check, it obviously fell out soon afterwards as the aircraft was taking off.

Serious as this omission was however, it is not our purpose to dwell on this aspect of the story, but rather to commend the pilot for his calm, resourcefulness and skill in the face of an ugly situation. In the ten minutes that he was airborne he schooled himself to control the aircraft with power, experimented with various flap settings to improve controllability, tried the elevator trim as a means of control, told one of his passengers to refasten his seat belt and made two calls to Lae Flight Service to advise them of his predicament - all the while guiding the aircraft at low level through the difficult winding valley to Marawaka.

Altogether it was an outstanding performance - a view with which the pilot's three passengers are certain to agree!"

This was a missionary aircraft, but the company I worked for brought the wreck and sent me in.

 



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Guru

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Just finished enhancing, size reducing and colour depth reducing photos. I shall post 20 pictures tomorrow showing the results of this one.

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Veteran Member

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Thank Iana - another great read.

Cheers

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Den & Sue
New Age Little Joey S - Isuzu MUX

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Despite the cost of living, it is still a very popular pass time.


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Can't wait for photo's, great story

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Guru

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Good reading - I worked with the Met in Madang and Lae in late 60's......I remember how often the SAR room was used and some of the anxious times looking over the shoulder of the FSO as he repeated calls to missing aircraft.
Regards

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Denis

Ex balloon chaser and mercury measurer.

Toowoomba.



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Great read, how did you manage to keep flying, I would have stayed firmly on the ground.

Lynda

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That wasn't me, I was sent in to repair the plane so it could be flown out. Mind you the pilot was also the engineer who did the work on the plane, red face for him.

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Another crash salvage, this is when I was young and stupid, now Im just stupid. I saw the job as a mission, get in, do the job and get out. Consequently I never appreciated the surroundings or the people at this place. I dont even remember the hut in which I slept, and of course I didnt keep a diary.

The Angu, called Kukukuku by their neighbors, are a small, but fierce people, previously known for their murderous surprise raids on other groups' villages.(1) They live in very remote mountainous country back of the Papuan Gulf. Until relatively recently much of their territory was a long walk from all except a few mission air strips. Quote from the net.

All I saw were these people standing around watching, dressed in the bark of trees as rain coats. They were the KuKukukus and were, I thought the last cannibals in New Guinea.

MKA1a Thats the Marawaka strip way down there, the mountains in this country are just amazing.

MKA2 On final approach, you cant change our mind and go around.

Anyhow we arrived and I think it was on a Cessna 402a with our tools and gear.  

MKA3a & MKA4a The plane looks a bit sick, flipped on its back as well.

MKA5a It was a long push back to the start of the strip and the village. Many hands make light work.

I think we stayed in one of the local huts. Regarding sleeping and eating etc., I don't remember a dammed thing. We worked long hours to get the job done.



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With the engine removed, its all pretty much crunched up. Working from day break and well into the night, we drilled out the rivets, bashed everything to its approximate shape and bolted or pop riveted it back together. All we had was a generator and a couple of electric drills.

If I remember correctly we reinforced the engine bay with one inch steel angle, a bit of steel plate here and there etc. Sukarno and Jacob my two assistants were as good as they came and together we worked as a good team. We worked from sun up until well into the night.

I am having a bit of trouble putting this up. the site or net doesn't like it.

 



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I needed a few spares for this job. Had them delivered by Twin Otter. A new set of wings, tail assembly engine prop fuel etc. The pilot in the picture is Max Parker 2nd chief pilot, test pilot, it was he who flew this poor plane out.

The plane is beginning to take shape. note the constabulary keeping an eye on things, the people watched everything.

The fuselage had a slight bend in it. So we braced it up with some steel channel 4130, bolted in place, looks like it will hold.

Engine test run and we are all ready to get out of here. That's a picture of the take off run on this strip. Has a solid feel about it.

I haven't got any pictures of the take off or flight back to base, as I was in the plane watching the back of the fuselage in case it started to creak a bit.

The job took about six days to complete.

The next job I did was much more adventurous.

 



-- Edited by iana on Friday 19th of June 2015 05:51:22 AM

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What a place, what an airstrip, what a job, what an audience. Since you were flying out on the plane I"m sure you did really careful work.

Lynda

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Thanks Felicia, it looks like everyone's a bit crashed out on this thread. Theses are slides and it takes a bit to get them into the thread. My last job was a bit crazy, and I got grey hair from it. But I really don't think the interest is here.
Cindy can delete if these are taking up too much room.

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iana,

Sorry to read that you are going to stop the thread. Seems to get a lot of views. You've given me so much information that I've never had a chance to read about before and probably never will again.

Lynda

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Facinating read.  Thanks for taking the time to post it.  Evan though you may not get many posts dont discount the number of reads you get. thanks again Paul.



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Iana - please keep sharing your slides and describing your work. I love, admire and applaud improvisation and it looks like you're an expert at that. Those days are gone unfortunately.
Regards

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Denis

Ex balloon chaser and mercury measurer.

Toowoomba.



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When I thought about posting these, I wondered about putting up my last job, as its the crazy one, or putting up the first and working through. I could not get the pictures to load in sequence, nor could I include them into a document and post it.
During my career in aircraft engineering I (we) did a few crazy things. OK I'll work on posting the last one. Feel free to ask questions.

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Keep it going cobber, appreciate the work in posting the text and pictures.



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Cheers Peter and Sue

"If I agree with you we'll both be wrong"

No, I'm not busy, I did it right the first time.

Self-powered wheelie walker, soon a power chair (ex. Nomad)

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