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Search: Posts Made By: HeliComparator
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Forum: Rotorheads
24th Jun 2015, 22:42
Replies: 1,141
Views: 340,518
Posted By HeliComparator

I think you are missing the point, which is that...

I think you are missing the point, which is that the sea state at the time was above 4 and perhaps that was a factor in the captain's denial about the need to ditch - ie he knew it would not be a...
Forum: Rotorheads
14th Feb 2011, 22:41
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Just noticed that Rick Burt left Cougar in mid...

Just noticed that Rick Burt left Cougar in mid 2010, now with CHC - was his departure related to the accident?
Forum: Rotorheads
11th Feb 2011, 17:33
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Not joking at all. We check the gauges from time...

Not joking at all. We check the gauges from time to time, but we don't spend a 2 hr transit staring at the gauges. In my experience as a Simulator instructor, if you give crews a failure eg engine or...
Forum: Rotorheads
11th Feb 2011, 09:55
Replies: 1,141
Views: 340,518
Posted By HeliComparator

I agree of course. The problem with a gauge is...

I agree of course. The problem with a gauge is that most crews don't fly along looking at the gauge all the time, therefore a departure from normal is only noticed once it brings on a caution light....
Forum: Rotorheads
10th Feb 2011, 21:46
Replies: 1,141
Views: 340,518
Posted By HeliComparator

I'm not sure that I understand the need for a...

I'm not sure that I understand the need for a level detector. In this case they had a double indication of zero pressure from two separate sensors. There was talk about "splash lubrication" but its...
Forum: Rotorheads
9th Feb 2011, 19:54
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Thanks for the link CR. Still digesting it but it...

Thanks for the link CR. Still digesting it but it seems to be an excellent report, though it does make rather depressing reading in a number of areas. PPRuNe gets a mention, which is perhaps a first...
Forum: Rotorheads
7th Feb 2011, 12:21
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Max, not being up to speed on things Canadian,...

Max, not being up to speed on things Canadian, does TC blindly accept FAA certification, or does someone in TC look at the certification data before accepting it? (just wondering if you can add TC to...
Forum: Rotorheads
7th Feb 2011, 12:17
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Brian, I take your point. To my mind residual oil...

Brian, I take your point. To my mind residual oil is what is left clinging to gears, bearings, shafts etc and since there is no mention of discontinuing the drain, it would seem to be the intention...
Forum: Rotorheads
6th Feb 2011, 18:46
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Its true that the rule is rather ambiguous,...

Its true that the rule is rather ambiguous, however the guidance material that went with it (AC 29-2C) is more specific. Use of the word "drained" is surely indicative of losing all the oil? Sorry...
Forum: Rotorheads
17th Nov 2010, 23:01
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Why is that then? Surely a leak gives no pressure...

Why is that then? Surely a leak gives no pressure drop until the pump inlet is uncovered and the pump starts pumping air? With a slow leak there would perhaps be a period of fluctuating oil pressure...
Forum: Rotorheads
14th Nov 2010, 22:23
Replies: 1,141
Views: 340,518
Posted By HeliComparator

zalt / 212. The version of the RFM I posted was...

zalt / 212. The version of the RFM I posted was current during the Norsk incident - according to the RFM they should have ditched, but (with hindsight) they made a good call and stretched it a few...
Forum: Rotorheads
14th Nov 2010, 21:14
Replies: 1,141
Views: 340,518
Posted By HeliComparator

I am sure 212man will be along shortly (when he...

I am sure 212man will be along shortly (when he wakes up!), but in the mean time I am fairly sure that the emergency landings in Borneo were not as a result of low oil pressure - rather it was the...
Forum: Rotorheads
3rd Nov 2010, 22:01
Replies: 1,141
Views: 340,518
Posted By HeliComparator

js - I guess we won't know if it was a factor...

js - I guess we won't know if it was a factor until all the details come out. Faced with a life-threatening situation, there can be a tendancy to clutch at straws and listen to what you want to...
Forum: Rotorheads
3rd Nov 2010, 19:07
Replies: 1,141
Views: 340,518
Posted By HeliComparator

js - Sikorsky brought the prototype S92 to a...

js - Sikorsky brought the prototype S92 to a fancy hotel just out of Aberdeen, everyone invited with lots of free food and drink if you listened to the presentation by one Nick Lappos. I recall it...
Forum: Rotorheads
2nd Nov 2010, 22:07
Replies: 1,141
Views: 340,518
Posted By HeliComparator

???? I think the main argument touting the...

???? I think the main argument touting the virtues of a 30min dry run time was that it allowed continued flight for a while after losing all the oil. It was not a universal panacea for all...
Forum: Rotorheads
2nd Nov 2010, 21:55
Replies: 1,141
Views: 340,518
Posted By HeliComparator

The S92 is pants but I think even it can manage...

The S92 is pants but I think even it can manage more than 2000' - or maybe you meant FL200? ;) But don't forget that if you get on with it and descend in near-autorotation, there is very little power...
Forum: Rotorheads
7th Sep 2010, 23:12
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Max, I still disagree. Robert will have had an...

Max, I still disagree. Robert will have had an opportunity to review the parts of the report to which he contributed. As explained by the TSB, the purpose of the external review is to allow those 2...
Forum: Rotorheads
7th Sep 2010, 22:41
Replies: 1,141
Views: 340,518
Posted By HeliComparator

You are both assuming that Mr Decker's account...

You are both assuming that Mr Decker's account will not be covered in the report, including any feedback from him on theories that might have arisen during the investigation. I am totally confident...
Forum: Rotorheads
7th Sep 2010, 19:27
Replies: 1,141
Views: 340,518
Posted By HeliComparator

I agree with TSB. If all passengers in an...

I agree with TSB. If all passengers in an accident had editorial powers (or even commenting power) in the report it would be a nightmare and there would be all sorts of rubbish flying around. Its an...
Forum: Rotorheads
25th Nov 2009, 08:23
Replies: 1,141
Views: 340,518
Posted By HeliComparator

madrock Inclined to agree with your...

madrock

Inclined to agree with your sentiment. The stress calculations that prove that its safe to operate between checks for 10hrs are presumably done using the same methodology and perhaps by...
Forum: Rotorheads
24th Nov 2009, 11:45
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Sven We may have been at cross-purposes...

Sven

We may have been at cross-purposes here, I thought you were referring to the Oil Filter inspection (if there is one?) but perhaps you were referring to the feet cracking inspection? If so,...
Forum: Rotorheads
24th Nov 2009, 10:30
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Sven That might be true if the oil filter...

Sven

That might be true if the oil filter were the only possible source of oil loss from the MGB. Unfortunately its not - as has already been suggested, there are other weak points such as...
Forum: Rotorheads
14th Nov 2009, 21:43
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Back on my hobby horse for a moment (which one...

Back on my hobby horse for a moment (which one you ask?): Which helicopter would you rather fly, the one that loses all its oil quite regularly but has a genuine 30 mins dry running time, or the one...
Forum: Rotorheads
14th Nov 2009, 09:04
Replies: 1,141
Views: 340,518
Posted By HeliComparator

squib - excellent post thankyou Sven - yes...

squib - excellent post thankyou

Sven - yes you are missing something, the cracking thing refers to the MGB attachment feet cracking, a new phenomena since the Cougar crash and not related to it as...
Forum: Rotorheads
8th Nov 2009, 11:53
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Not the 30 mins again!!!

Thanks for the prompt Brian, but life it too short to go round that loop yet again - maybe its your turn to clarify the point now you are enlightened!

Clearly the guy knows nothing about the S92...
Forum: Rotorheads
19th Jun 2009, 15:59
Replies: 1,141
Views: 340,518
Posted By HeliComparator

SAS - true, there is no info about the state of...

SAS - true, there is no info about the state of the rest of the gearbox, but with that much metal missing from the pinion, and with a gearbox that has proven it can't run for long with no oil in it,...
Forum: Rotorheads
19th Jun 2009, 14:58
Replies: 1,141
Views: 340,518
Posted By HeliComparator

CFEOSKEY - if it truely was an open question, not...

CFEOSKEY - if it truely was an open question, not a rhetorical question, then I apologise. It was the addition of the second sentence that caused my interpretation that you were really saying "so...
Forum: Rotorheads
19th Jun 2009, 14:16
Replies: 1,141
Views: 340,518
Posted By HeliComparator

CEFOSKEY - A tail rotor drive failure from <800'...

CEFOSKEY - A tail rotor drive failure from <800' would be quite difficult to deal with even when already pretty much in autorotation, though the report just says descending, not autorotating. With...
Forum: Rotorheads
10th Apr 2009, 08:08
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Crab Yes, but the stroking seats would...

Crab

Yes, but the stroking seats would reduce the peak g. If the airframe suffered a peak of 20g, the occupants of the seats would suffer somewhat less. Still very lucky though!

I wonder if...
Forum: Rotorheads
30th Mar 2009, 12:02
Replies: 1,141
Views: 340,518
Posted By HeliComparator

OMR Its not unusual to fly modern...

OMR

Its not unusual to fly modern helicopters at high altitude, for the same reason that jet airliners fly high, ie much better fuel consumption for the same TAS, better VHF radio comms, better...
Forum: Rotorheads
25th Mar 2009, 21:03
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Regarding Crab's point, there is no point in...

Regarding Crab's point, there is no point in being the safest operator if you go out of business because your costs are too high. It is the nature of our business that we compete with each other...
Forum: Rotorheads
15th Mar 2009, 11:15
Replies: 1,141
Views: 340,518
Posted By HeliComparator

Geoffers I presume then that there is no...

Geoffers

I presume then that there is no quoted maximum IAS for arming the floats on the 139? Unfortunately on the S92 its 80kts, and I'm sure you wouldn't be encouraging pilots to bust a flight...
Forum: Rotorheads
13th Mar 2009, 12:19
Replies: 1,141
Views: 340,518
Posted By HeliComparator

OMR Sikorsky and the FAA chose to go with...

OMR

Sikorsky and the FAA chose to go with the first sentence "Unless such failures are extremely remote,..." rather than the 30 minutes bit, though it begs the question how such an event can be...
Showing results 1 to 33 of 33


 
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