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Search: Posts Made By: n305fa
Showing results 1 to 35 of 47
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Forum: Rumours & News
23rd Mar 2017, 20:27
Replies: 1,109
Views: 551,041
Posted By n305fa

Not sure if the Hunter grounding has been removed...

Not sure if the Hunter grounding has been removed but there may be issues in compliance with MPD2016-01...
Forum: Rumours & News
22nd Mar 2017, 22:23
Replies: 1,109
Views: 551,041
Posted By n305fa

Perhaps, given the technical findings (ejection...

Perhaps, given the technical findings (ejection seats etc) of the investigation, the TP couldn't find a civil reg T7 he was happy to operate.

Please correct me if Im wrong but I thought the...
Forum: Rumours & News
22nd Mar 2017, 19:20
Replies: 1,109
Views: 551,041
Posted By n305fa

For clarity here is the definition of the purpose...

For clarity here is the definition of the purpose of an AAIB investigation which is defined in law.

The Civil Aviation (Investigation of Air Accidents and Incidents) Regulations 1996 states
...
Forum: Rumours & News
22nd Mar 2017, 17:22
Replies: 1,109
Views: 551,041
Posted By n305fa

Personally I think the 30 recommendations to the...

Personally I think the 30 recommendations to the regulator regarding airworthiness and airshow regulation say quite a lot about the state of the air display regulation. The final recommendation to...
Forum: Rumours & News
21st Mar 2017, 20:24
Replies: 1,109
Views: 551,041
Posted By n305fa

Lemain As I've said before, AAIB reports do...

Lemain

As I've said before, AAIB reports do not contain a comprehensive description of every test, data validation process, theory or idea that was used/investigated and deemed "in their expert...
Forum: Rumours & News
16th Mar 2017, 22:53
Replies: 1,109
Views: 551,041
Posted By n305fa

Re the above, if the bleed valves are open, that...

Re the above, if the bleed valves are open, that will produce a higher JPT for a given rpm. Thrust (mass flow rate) is directly related to the compressor delivery pressure and the fuel flow (given...
Forum: Airlines, Airports & Routes
16th Mar 2017, 11:59
Replies: 95
Views: 30,967
Posted By n305fa

Interesting experience if you get a nose wheel...

Interesting experience if you get a nose wheel steering failure and go over the banking.

Or, how about an evacuation, the downslope slides would be very "sporty" but you might have to run down the...
Forum: Airlines, Airports & Routes
16th Mar 2017, 11:54
Replies: 95
Views: 30,967
Posted By n305fa

I've had an idea. What if we simplify it a bit...

I've had an idea. What if we simplify it a bit and turn it into a triangle with 3 runways, then to save space move the runways in a bit so they don't touch at the ends. Oh, just realised that is...
Forum: Rumours & News
14th Mar 2017, 17:48
Replies: 1,109
Views: 551,041
Posted By n305fa

I totally agree, having played with hunters...

I totally agree, having played with hunters there's no fuel or fluid drain in the lower rear fuselage(aft of the transport joint). There's nothing in that area that would give you a plume, and it...
Forum: Rumours & News
8th Mar 2017, 20:53
Replies: 1,109
Views: 551,041
Posted By n305fa

BVCU "so where now would they find the...

BVCU
"so where now would they find the expertise now ? "
How about Bristol, were the design team, tech support and incident investigation was based, EK was just an overhaul facility, all...
Forum: Rumours & News
8th Mar 2017, 12:59
Replies: 1,109
Views: 551,041
Posted By n305fa

Perhaps RR are the only ones who can provide this...

Perhaps RR are the only ones who can provide this sort of information given they designed, built and overhauls the engine. Suprisingly the AAIB seem to have spend a long time with the RR experts...
Forum: Rumours & News
5th Mar 2017, 08:37
Replies: 1,109
Views: 551,041
Posted By n305fa

SLF I'm not trying to be pedantic, I was...

SLF

I'm not trying to be pedantic, I was just paraphrasing bits from the report, specifically the AAIB finding (83 I think) that states the Conditions of the Permit to Fly weren't met. They're...
Forum: Rumours & News
5th Mar 2017, 06:40
Replies: 1,109
Views: 551,041
Posted By n305fa

G0ULI Just a quick point about the...

G0ULI

Just a quick point about the airworthiness of the aircraft.

Mandatory requirements not met, components beyond mandatory lives, defects not reported, limit exceedances not reported ( and...
Forum: Rumours & News
4th Mar 2017, 22:46
Replies: 1,109
Views: 551,041
Posted By n305fa

While I understand the discussions regarding the...

While I understand the discussions regarding the completion of the final manoeuvre and the performance of the pilot I would politely suggest that this the final stage in a chain of failings which...
Forum: Accidents and Close Calls
26th Feb 2017, 22:11
Replies: 1,087
Views: 1,029,256
Posted By n305fa

Just a thought but perhaps the release date has...

Just a thought but perhaps the release date has been dictated by other issues, I assume that the AAIB will brief the relatives of those that lost their lives before the report goes public so their...
Forum: Rotorheads
1st Jul 2016, 19:48
Replies: 1,949
Views: 1,584,426
Posted By n305fa

Turbo shaft Sorry, I got the wrong end of the...

Turbo shaft
Sorry, I got the wrong end of the stick about your comment on the running time, please accept my apologies.


Re the two types of planet gear, the 2nd stage planet gears are produced...
Forum: Rotorheads
1st Jul 2016, 07:19
Replies: 1,949
Views: 1,584,426
Posted By n305fa

Turbo shafts Re the prediction of remaining...

Turbo shafts

Re the prediction of remaining gear life with spalling present, I was referring to your assertion that the gear should have lasted 300 hours, not the ability of the design team to...
Forum: Rotorheads
29th Jun 2016, 21:32
Replies: 1,949
Views: 1,584,426
Posted By n305fa

Turbo shafts Just a couple of points ...

Turbo shafts

Just a couple of points

REDL s HUMS was analysed by both the AAIB, EC and the system manufacturer, all of who concluded that the CIs observed gave no prediction of catastrophic...
Forum: Rotorheads
28th Jun 2016, 19:34
Replies: 1,949
Views: 1,584,426
Posted By n305fa

I guess the response to the safety...

I guess the response to the safety recommendations are in one of the AAIB annual reports
Forum: Rotorheads
28th Jun 2016, 18:45
Replies: 1,949
Views: 1,584,426
Posted By n305fa

New investigation update released by AIBN

A new update has been released pointing towards the failure of the second stage planet gear as being the most probable cause of the accident
...
Forum: Rotorheads
20th Jun 2016, 21:40
Replies: 1,949
Views: 1,584,426
Posted By n305fa

From the REDL report the epicyclic planets are...

From the REDL report the epicyclic planets are made of the following steels: Gear/outer raceway 16NCD13, rollers M50, inner race M50.

The REDL gives the reasons for the different materials and...
Forum: Rotorheads
11th Jun 2016, 15:29
Replies: 1,949
Views: 1,584,426
Posted By n305fa

HC You and I obviously have had different...

HC

You and I obviously have had different experiences of accident investigation, all of the ones I've been directly involved with, or on the sidelines of have followed the process I've described...
Forum: Rotorheads
11th Jun 2016, 15:17
Replies: 1,949
Views: 1,584,426
Posted By n305fa

The OH life of the MGB including epicyclic is...

The OH life of the MGB including epicyclic is 2500 hrs on the EC225, the planets have an ultimate life of 5000 hrs from memory.
Forum: Rotorheads
11th Jun 2016, 06:42
Replies: 1,949
Views: 1,584,426
Posted By n305fa

HC Re your comments, fortunately what I said...

HC

Re your comments, fortunately what I said was based on experience of being directly involved in a significant accident investigation, it wasn't made up. The investigation releases information...
Forum: Rotorheads
10th Jun 2016, 21:48
Replies: 1,949
Views: 1,584,426
Posted By n305fa

I'd just like to say a couple of comments re the...

I'd just like to say a couple of comments re the above and helicompartor.

The AIBN is the investigation authority, no-one else. They areinvestigating a significant, complicated (beyond our...
Forum: Rotorheads
3rd Jun 2016, 13:29
Replies: 1,949
Views: 1,584,426
Posted By n305fa

The only way the rollers can get out of an...

The only way the rollers can get out of an installed planet gear is if the outer race either brakes, deforms or is pulled off the inner race. Getting them out of the loading slot in the inner race...
Forum: Rotorheads
2nd Jun 2016, 21:45
Replies: 1,949
Views: 1,584,426
Posted By n305fa

The L2 and the 225 share the same epicyclic...

The L2 and the 225 share the same epicyclic module which is different for the L and L1, the 332L2 and 225 have two stages of eight gears, not sure of the L and L1 have 7 or 9 gears per stage. The...
Forum: Rotorheads
2nd Jun 2016, 15:27
Replies: 1,949
Views: 1,584,426
Posted By n305fa

I don't imaging that the engineers or o/h shop...

I don't imaging that the engineers or o/h shop would be too please with irradiated components either
Forum: Rotorheads
2nd Jun 2016, 15:18
Replies: 1,949
Views: 1,584,426
Posted By n305fa

I also remember trials in the military in the 90s...

I also remember trials in the military in the 90s that weren't too successful by I believe the new generation kit is being used successfully on the Merlin, F35 and some other platforms.
Forum: Rotorheads
2nd Jun 2016, 14:59
Replies: 1,949
Views: 1,584,426
Posted By n305fa

Perhaps something "real time" like ...

Perhaps something "real time" like

http://www.gastops.com/products/metalscan/ms-1000/
Forum: Rotorheads
2nd Jun 2016, 08:41
Replies: 1,949
Views: 1,584,426
Posted By n305fa

Perhaps AH should revisit its response the their...

Perhaps AH should revisit its response the their reply to the following REDL safety recommendation (in AAIB annual report 2012)
SAFETY RECOMMENDATION – 2011-032
It is recommended that, in addition...
Forum: Rotorheads
2nd Jun 2016, 08:20
Replies: 1,949
Views: 1,584,426
Posted By n305fa

It's also worth noting that, if the ultimate...

It's also worth noting that, if the ultimate cause of the accident is in the H225 epicyclic, the AS332L2 uses the same module as the H225 , so they would be similarly affected.
Forum: Rotorheads
1st Jun 2016, 21:00
Replies: 1,949
Views: 1,584,426
Posted By n305fa

The maintenance review Cert is an annual check /...

The maintenance review Cert is an annual check / review of the airframe, at the time of the review.

Given the findings of the investigation I would suggest that it is more appropriate to follow...
Forum: Rotorheads
1st Jun 2016, 20:54
Replies: 1,949
Views: 1,584,426
Posted By n305fa

I think if you compare the shape of the inner...

I think if you compare the shape of the inner edge,(raceway) you will see that cracked gear you point to is "ovalised" compared to the other example. The location of the crack is where the tensile...
Forum: Rotorheads
22nd May 2016, 21:20
Replies: 1,949
Views: 1,584,426
Posted By n305fa

I think your doing the REDL investigation a major...

I think your doing the REDL investigation a major disservice by selectively quoting part of the report the suit your argument. The issues around the discovery of the particle are clearly described...
Showing results 1 to 35 of 47
 
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