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Search: Posts Made By: ballpoint
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Forum: Accidents and Close Calls
19th May 2023, 07:53
Replies: 32
Views: 18,736
Posted By ballpoint

Brittleness

The steel alloy the landing gear is made of is very sensitive to hydrogen.
When hydrogen molecules penetrate the material, which can happen when the chrome coating is damaged, a phenomenon called...
Forum: Tech Log
15th Apr 2020, 20:05
Replies: 7
Views: 1,584
Posted By ballpoint

Some clarification from a licensed engineer: A...

Some clarification from a licensed engineer:
A walkaround is in maintenance terminology defined as a “GVI” which stands for General Visual Inspection.
To be performed from ground level from an arm...
Forum: Tech Log
29th Feb 2008, 12:26
Replies: 42
Views: 11,901
Posted By ballpoint

Fraud prevention

My company operates 747-400 combi aircraft which are fitted with a W&B system.
Our pilots must make a logbook entry when the indicated ZFW differs more than 10 tonnes from the loadsheet ZFW.
Many...
Forum: Tech Log
7th Feb 2008, 18:33
Replies: 19
Views: 3,643
Posted By ballpoint

Suppose you will need to locate the seats in...

Suppose you will need to locate the seats in front of the crashnet and not behind it.
Otherwise the groom will end up with a horse sitting in his lap after a rejected takeoff or worse!

Ballpoint.
Forum: Tech Log
7th Feb 2008, 18:11
Replies: 15
Views: 2,421
Posted By ballpoint

Being a 744 engineer myself, I think it works...

Being a 744 engineer myself, I think it works this way:

The (full) wing can contain more Kgs of fuel when the SG goes up.
And it´s basic practice first to let the wing fill to the max capacity of...
Forum: Tech Log
23rd Dec 2005, 16:49
Replies: 19
Views: 9,534
Posted By ballpoint

Reversers

Red5 wrote:

I cant quite get to grips with why they are talking about reversers. The cascade vanes are fitted in the C ducts and during an engine change the C ducts remain attached to the pylon...
Forum: Engineers & Technicians
22nd Nov 2005, 18:07
Replies: 11
Views: 3,034
Posted By ballpoint

Vibration

Nothing to worry about.

The problem you encountered is quite common on -400's and is cured by replacing both nose wheels.
A good grease job on the nose gear steering collar might also help.
...
Forum: Engineers & Technicians
7th Oct 2005, 20:59
Replies: 6
Views: 1,842
Posted By ballpoint

Equipment cooling

Status messages concerning E/E cooling can often be cured by rotating the equipment cooling switch on the P5 panel to override and then back to NORM.
The E/E cooling air exhaust valve quite often...
Forum: Rumours & News
21st Oct 2004, 21:18
Replies: 59
Views: 28,723
Posted By ballpoint

Engine type?

Gentlemen,

I believe all of these incidents have been with P&W JT-9 engines.
Is there anyone who can point out what kind of fault makes these engines detach from the pylon?
Could turbine seizure...
Forum: Tech Log
26th Jan 2004, 04:49
Replies: 3
Views: 1,164
Posted By ballpoint

747 LDG

Rage,

This phenomenon must have something to do with the yaw axis of the airframe being located just in between the body- and wing gears.
If the downwind winggear touches down a split second...
Forum: Engineers & Technicians
13th Jan 2004, 23:23
Replies: 4
Views: 28,358
Posted By ballpoint

Hydro Mechanical Unit

Skytrucker,

Even without 737 knowledge, I can make a start answering your question.
Details will then have to be filled in by a 737 skilled person.
First, what we call the HMU on 'my' aircraft,...
Forum: Rumours & News
7th Nov 2003, 17:10
Replies: 26
Views: 9,445
Posted By ballpoint

Devil Gearpin stowage

A question for all you 747 guys and girls:

In our (KLM) a/c we stow the gearpins in the cockpit and not in the E/E compartment, for obvious reasons.

This mod must have saved us a lot of trouble...
Forum: Tech Log
20th Jan 2002, 15:38
Replies: 10
Views: 2,095
Posted By ballpoint

Exclamation Leslie and others, Fuel leaking from a surge...

Leslie and others,

Fuel leaking from a surge tank vent is in 90% of the cases caused by overfilling one of the main tanks.
This can be caused by expanding fuel during a hot day, by towing the...
Forum: Engineers & Technicians
19th Jul 2001, 19:09
Replies: 54
Views: 3,563
Posted By ballpoint

fish Ballpoint Born in 1964 Started with 747...

Ballpoint

Born in 1964
Started with 747 D-checks in 1986
Thereafter C-checks.
On the line at AMS since '92.
LAE A&P 747 classic and 400

Moderate drinker.
Forum: Engineers & Technicians
19th Jul 2001, 18:57
Replies: 1
Views: 462
Posted By ballpoint

Post Palm computer

Dear colleagues,

My employer, a major Dutch airline, is willing to supply us with some kind of handheld computer, which could make our work on the platform much easier. But they want us to sort...
Showing results 1 to 15 of 15


 
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