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Search: Posts Made By: HeliComparator
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Forum: Rotorheads
13th Mar 2014, 12:50
Replies: 524
Views: 226,689
Posted By HeliComparator

It's the first FAI determination I have read, but...

It's the first FAI determination I have read, but I though it was well written, clear and logical.
Forum: Rotorheads
14th Jan 2014, 09:47
Replies: 524
Views: 226,689
Posted By HeliComparator

Pitts, I know you are not trying to pick a fight,...

Pitts, I know you are not trying to pick a fight, but as an outsider without an understanding of the industry, you are quite a demanding poster, asking questions and posing thoughts seemingly at...
Forum: Rotorheads
14th Jan 2014, 09:25
Replies: 524
Views: 226,689
Posted By HeliComparator

Ha Ha, good one son of Shell Management!

Ha Ha, good one son of Shell Management!
Forum: Rotorheads
13th Jan 2014, 22:42
Replies: 524
Views: 226,689
Posted By HeliComparator

By the way, whilst I am lobbing a few grenades...

By the way, whilst I am lobbing a few grenades around, does anyone think there is any prospect of "the authority" - aka CAA and EASA - finally working out that oversight of maintenance organisations...
Forum: Rotorheads
13th Jan 2014, 21:48
Replies: 524
Views: 226,689
Posted By HeliComparator

You are doing your usual scatter-gun impression....

You are doing your usual scatter-gun impression. Due perhaps not to malice, but to not understanding where the various bodies fit into the big picture.

Have we seen the CAA report you mention? Not...
Forum: Rotorheads
13th Jan 2014, 20:18
Replies: 524
Views: 226,689
Posted By HeliComparator

The AAIB are always careful not to attribute...

The AAIB are always careful not to attribute blame. Their remit is to find out what happened and why, not to try to apportion blame.

The manufacturer does not require hums use at all - it is a...
Forum: Rotorheads
13th Jan 2014, 13:21
Replies: 524
Views: 226,689
Posted By HeliComparator

The decision to prosecute or not does come from...

The decision to prosecute or not does come from the crown (Procurator Fiscal in Scotland I think) but has to be based on the available evidence. When most of the evidence comes from an interested...
Forum: Rotorheads
13th Jan 2014, 12:39
Replies: 524
Views: 226,689
Posted By HeliComparator

Pitts, normally you just want to change to entire...

Pitts, normally you just want to change to entire way the helicopter industry functions. But now you have moved up to wanting to change the way the Scottish legal system works! I think you may have a...
Forum: Rotorheads
12th Jan 2014, 16:03
Replies: 524
Views: 226,689
Posted By HeliComparator

Yes there is a summary in the P&J each day....

Yes there is a summary in the P&J each day. Nothing too startling yet. The lawyer for the victims families wanted to "fishing trip" by asking to see all tech logs for all Bond's helis but it was...
Forum: Rotorheads
10th Apr 2012, 21:19
Replies: 524
Views: 226,689
Posted By HeliComparator

Err, published last November I think you will...

Err, published last November I think you will find?
Forum: Rotorheads
30th Nov 2011, 20:21
Replies: 524
Views: 226,689
Posted By HeliComparator

SAS, I get the feeling that what you are saying...

SAS, I get the feeling that what you are saying is that whenever there is an accident caused by technical failure, the type should have its Type Certificate pulled until the design is modified to a...
Forum: Rotorheads
30th Nov 2011, 17:25
Replies: 524
Views: 226,689
Posted By HeliComparator

I could be wrong here but I think the report...

I could be wrong here but I think the report means that the L2 gearbox met the certification requirements at the time, things have moved on and the current certification requirements may no longer be...
Forum: Rotorheads
27th Nov 2011, 21:54
Replies: 524
Views: 226,689
Posted By HeliComparator

The report does say that the frequency varied...

The report does say that the frequency varied with the Nr so it was something connected to the transmission, but there is an awful lot that it could have been - something on an engine Nf shaft, oil...
Forum: Rotorheads
27th Nov 2011, 18:02
Replies: 524
Views: 226,689
Posted By HeliComparator

n305 you raise some interesting points, though I...

n305 you raise some interesting points, though I would say that you comment in 1/ about "a load of metallic particles" is perhaps a slight exaggeration.

Really we have only two non-invasive...
Forum: Rotorheads
26th Nov 2011, 14:44
Replies: 524
Views: 226,689
Posted By HeliComparator

II / SAS I very much doubt that the 1022 hz...

II / SAS

I very much doubt that the 1022 hz tone was relevant. That frequency corresponds to a rotational speed of 61,320 rpm or for say a gear with 30 teeth, gear meshing frequency at 2044 rpm...
Forum: Rotorheads
26th Nov 2011, 00:12
Replies: 524
Views: 226,689
Posted By HeliComparator

Just thought I would expand on the SOAP thing....

Just thought I would expand on the SOAP thing. SOAP is not the solution:

SOAP uses spectrography to detect microscopic metallic particles such as are produced by general wear, plain bearing...
Forum: Rotorheads
25th Nov 2011, 22:51
Replies: 524
Views: 226,689
Posted By HeliComparator

Hi SAS My sympathy for the maintenance guys...

Hi SAS

My sympathy for the maintenance guys was aimed at those working for Bond, not for EC.

Regarding your defensiveness of the 92 there are a couple of differences between it and the L2 - the...
Forum: Rotorheads
25th Nov 2011, 10:59
Replies: 524
Views: 226,689
Posted By HeliComparator

Yes does seem a bit quiet. I suppose one would...

Yes does seem a bit quiet. I suppose one would not like to be in the engineering team that were dealing with the chip issue, perhaps there is some desire not to give them a harder time than they will...
Forum: Rotorheads
27th Apr 2009, 21:18
Replies: 524
Views: 226,689
Posted By HeliComparator

Just for the sake of accuracy, G-JSAR was...

Just for the sake of accuracy, G-JSAR was operated by Bristow until it ditched off Den Helder in 2006 and was eventually declared an insurance write-off.

HC
Forum: Rotorheads
19th Apr 2009, 16:17
Replies: 524
Views: 226,689
Posted By HeliComparator

bumpthump - PR was my feeling on Friday, but now...

bumpthump - PR was my feeling on Friday, but now the Manufacturer has modified its Alert Service Bulletin making further work mandatory. It seems that the manufacturer has an idea of how to improve...
Forum: Rotorheads
17th Apr 2009, 21:23
Replies: 524
Views: 226,689
Posted By HeliComparator

twang The old L2 LH accessory module problem...

twang

The old L2 LH accessory module problem has long since been cured (though not without some difficulties along the way - I think it was the 3rd mod that was finally successful). A LH accessory...
Forum: Rotorheads
16th Apr 2009, 23:03
Replies: 524
Views: 226,689
Posted By HeliComparator

widgeon Yes (to the bevel drive). On the...

widgeon

Yes (to the bevel drive). On the Super Puma family the freewheel is after 1 stage of reduction - not sure if this is a good or bad thing.

Training Centre, thanks for the 8 - it was just...
Forum: Rotorheads
15th Apr 2009, 21:07
Replies: 524
Views: 226,689
Posted By HeliComparator

widgeon If you look to the left of where it...

widgeon

If you look to the left of where it says "LH Accessories" you will see a blue shaft, where that gets fat and meshes with the pink tail rotor drive shaft, is the torque sensor (measures...
Forum: Rotorheads
15th Apr 2009, 19:39
Replies: 524
Views: 226,689
Posted By HeliComparator

dipperm0 - good diagram of the MGB (from the THM...

dipperm0 - good diagram of the MGB (from the THM I think?) but just to point out that it only shows 1 planet gear on each epicyclic stage, when in fact there are a number (not sure how many).

HC
Forum: Rotorheads
14th Apr 2009, 09:08
Replies: 524
Views: 226,689
Posted By HeliComparator

Batboy I checked our Safety Report database...

Batboy

I checked our Safety Report database and found the incidents to which you refer. The oil leak was caused by the seal of the MGB oil filler cap coming off. After takeoff there was a sudden...
Forum: Rotorheads
11th Apr 2009, 16:23
Replies: 524
Views: 226,689
Posted By HeliComparator

mckeg4 If you are asking "could it happen...

mckeg4

If you are asking "could it happen again" then in all honesty I think the answer has to be yes, since cracks in gearbox components are very difficult to find until you strip down the...
Forum: Rotorheads
11th Apr 2009, 09:45
Replies: 524
Views: 226,689
Posted By HeliComparator

Thanks rapman, your terminlogy is what I should...

Thanks rapman, your terminlogy is what I should have used in the first place!

No, there is no Chip detector for the epicyclic on the L or L2, only a mag plug. However, its all in the same oil...
Forum: Rotorheads
11th Apr 2009, 09:09
Replies: 524
Views: 226,689
Posted By HeliComparator

Aser, sorry if I was not clear. The 332L2 has an...

Aser, sorry if I was not clear. The 332L2 has an MGB chip light, but its detector is in the sump at the bottom. There is (at least) one other chip detector higher up, designed to catch any chips...
Forum: Rotorheads
11th Apr 2009, 08:15
Replies: 524
Views: 226,689
Posted By HeliComparator

Flyt3est et al The point is that its having...

Flyt3est et al

The point is that its having to set thresholds that is the problem - no-one knows where the threshold should be until after the disaster. Indeed some failure modes can cause some...
Forum: Rotorheads
10th Apr 2009, 22:07
Replies: 524
Views: 226,689
Posted By HeliComparator

Very scary stuff. Its a great pity to see HUMS...

Very scary stuff. Its a great pity to see HUMS fail to spot this one coming. The procedure of finding a small metal particle on a chip detector then putting the component onto "close monitoring" is...
Forum: Rotorheads
8th Apr 2009, 18:23
Replies: 524
Views: 226,689
Posted By HeliComparator

dipperm0 So no humans involved in...

dipperm0



So no humans involved in maintaining the aircraft, designing it, building it, defining the certification standards, defining the operations standards, defining the maintenance...
Forum: Rotorheads
6th Apr 2009, 09:18
Replies: 524
Views: 226,689
Posted By HeliComparator

SP Might I suggest a moderator-posting...

SP

Might I suggest a moderator-posting giving the "rules of engagement" following an accident - eg the separate condolences thread, that its OK to speculate on the cause, or whatever. Pref...
Forum: Rotorheads
3rd Apr 2009, 01:05
Replies: 524
Views: 226,689
Posted By HeliComparator

CvB If you want to be picky, the L2 and the...

CvB

If you want to be picky, the L2 and the 225 are the same type, they are just different variants - at least for the purposes of pilot licencing.

HC
Forum: Rotorheads
2nd Apr 2009, 01:37
Replies: 524
Views: 226,689
Posted By HeliComparator

slyguy Unfortunately it seems this accident...

slyguy

Unfortunately it seems this accident was non-survivable with or without PLBs

Aser - auto-deployable liferafts would be a very bad idea - the first malfunction causing them to deploy in...
Showing results 1 to 34 of 34


 
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