Cable splicing- nicopress methods ...

Have you seen this type of cable before? This is the cables with different termination technique for the purpose of connecting the cable controls in aircraft. They are fit , durable and could maintain to full cable strength. To do this, things must be have is like cable cutter, gono-go gauge, caliper, nicopress sleeve and tools, and pliers also.

The center of the compression made first(with this tools) , then the compression nearest to thimble , and finally the compression at the end of the sleeve . After all the 3 compressions made, they are checked with special gauge. If they are properly made, the sleeve exactly fit the slot.

Cable that has been cut then goes to other process- swaging and nicopress

More details can be pursuit here

Safety wire, check on corrosion applied...

Last Thursday, we have training on safety wire and corrosin check on the aircraft in the hangar. The instructor, Hj. Megat have divide members of easa4 into small groups. Each group with 4 members have to check wether the parts in the airplane or helicopter like safety wire have to be replace or not. If none of that things can be find, then other parts must be resolve- find the corrosion parts, clean and fix it.

My group, have checking on boeing727 left landing gear and we found 2parts -turnbuckles. That turnbuckles safety wiring must be replaced with the new one .The tools that we used is safety wiring pliers, long nose pliers. The wire for turnbuckles that we used is wire 1/32 inch diameter.

Making the safety wiring on pipes connector

Helicopter- Check the corrosion,Clean and reinstall the push pull rod and chains back to its place

Next day, we have made check on the jackscrew whether the jack screw have the corrosion or not. We open on each part and check any suspicious or dent on the gear of the jackscrew. Oh ya, know the jackscrew? It’s the moving part(connect to the hydraulic pump through the lever ) that does make elevator or flaps moving up or down depending on the aircraft. The a/c that my team does it is on the HS125.

Gear that connect to the gear box of the jackscrew.

Surface patch

1.Surface patch====

what we need;

universal rivet ms470, sketch of the patch and panel, sand paper, tools; rivet gun with straight sets, deburring tools, gleco, filling tools ,bucking bars, fastener pliers

what we do;

calculate the rivert including Ed(edge distance), Rd( rivet diameter),Nr(no of rivet),rl(rivet length).Then sketch onto the sheet of paper, make the photocopy, patch it onto the 2024 sheet metal. When done cut it through its size and shape of the patch and skins.

Filling the edge of the sheet metal, make the hole for the riveting on both skins and patch. Gleco by using sheet fastener pliers.

Cut the bottom of the rivet by using the rivet cutter. Say if the rd which is 3/32 so must add 2 plies of bottom steel of the rivet cutter to make it cut and firm to the patch and skin . Put that rivet into the hole of patch and skins and begin to riveting by using rivet gun and bucking bars. The shop head that was shaped from the pressed of bucking bars must be ½ to the original length of the rivet (that is the length of the rivet behind the panel).

Next----> will be on flush patch next time

Metal wokshop

Last thursday, we have entered the metal metal workshop situated behind our class. Our lecturer, en. Samsudin is the person that responsible to manage the workshop on that day. The task that we do is cut the metal, measure and reshaped it through the following diagram on the work sheet. Personally, I could say, I really amazed. Most of the thing that we learn in the classroom applied on that training such as use the pneumatic drill, right and left hand sissors, table drill, file etc. The last thing that we done on that metal is clean the metal surface with the sand paper. The reason, to make the metal surface become smooth and pretty cool.

Cutter that we used

Dividers: used to measuring the irregular lines. Sometimes we use it to make circle . Hand nibbler: how to us it? exactly, it acts like a punches or dies.

This metal sheet, 2024 Al-Alloy that has been drilling by using the pneumatic drill and table drill.

Last finishing: using the sand paper.

Altimeter on action

Last Monday, we batch 4 student have a class conducted by Mej. B Abu Bakar. During his teachings, everything is just as being thought recently, bored. Bored because of not have any idea to ask for or questioned except for Hanifah n Azlan. They both stayed at the front and keep always asked to Major for the topic on that day. That time we have discussion on altimeter. Suddenly, he rush out and told us " I'll get u the altimeter so u can understand perfectly". A couple of minutes then he enter the classroom and bring 2 things, one is bulky altimeter and another is the interior gear that generates the indicator of the altimeter.

As already know , altimeter is used for measure the altitude of an object above fixed level. Inside it, as you can see, an aneroid barometer measures the atmospheric pressure from a static port outside the aircraft

This picture show to us the true view of aneroid barometer, couple with the gears and also springs.

By look further through wikipedia, the altimeter itself is calibrated to show the pressure directly as an altitude above mean sea level, in accordance with a mathematical model defined by the International Standard Atmosphere (ISA).

Nice. Really made from brass, I think.

The smallest pointer on the scale reading used as the scale adjustment knob turns out at specific value, usually done by the pilot. The other pointer, the longer one, used to read hundredth to thousandth feet. The shorter pointer is pointed when readings have to showed thousandth to ten times thousand feet above, ( measured from mean sea level)