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Forum: Rotorheads
15th May 2020, 16:50
Replies: 29
Views: 3,300
Posted By JimL

I agree with Variable load this is making a...

I agree with Variable load this is making a mountain out of a molehill.

The whole purpose of the OPC - be it JAR-OPS or EASA - is to establish the competence of pilot in role. The testing of...
Forum: Rotorheads
17th Apr 2020, 09:00
Replies: 16
Views: 7,829
Posted By JimL

Ensuring that engines achieve their predicted...

Ensuring that engines achieve their predicted reliability is governed by several factors - e.g. continuing airworthiness using condition monitoring and power assurance. This sometimes results in...
Forum: Rotorheads
16th Apr 2020, 15:11
Replies: 16
Views: 7,829
Posted By JimL

S3R, Data is collected by all the engine...

S3R,

Data is collected by all the engine OEMs and sent to the airframe manufacturers; it is then combined with airframe failures (those that are not directly related to the core engine). The...
Forum: Rotorheads
10th Apr 2020, 10:38
Replies: 11
Views: 2,693
Posted By JimL

RIP Gerry - I enjoyed my hours with you in the...

RIP Gerry - I enjoyed my hours with you in the Hiller.

Jim
Forum: Rotorheads
23rd Mar 2020, 15:16
Replies: 17
Views: 6,330
Posted By JimL

Hi Mattb (I tried to respond by PM but either...

Hi Mattb (I tried to respond by PM but either your PM box is full or you have not yet qualified to use it).

This has been addressed in the recently constructed 'draft' ICAO Heliport Manual in...
Forum: Rotorheads
14th Dec 2019, 08:07
Replies: 38
Views: 16,025
Posted By JimL

Detnome, you furnish the requirements quite...

Detnome, you furnish the requirements quite accurately and then come to an odd conclusion.

There is a requirement for sufficient space for the continued take-off following an engine failure after...
Forum: Rotorheads
21st Apr 2019, 13:33
Replies: 165
Views: 48,826
Posted By JimL

That is the most extreme example of the...

That is the most extreme example of the introduction of complexity seen for a while.

Will you please refrain from scattering your posts with false accusations and inaccuracies. For example:


...
Forum: Rotorheads
20th Apr 2019, 14:29
Replies: 165
Views: 48,826
Posted By JimL

AnFI, if you intend to quote someone, perhaps you...

AnFI, if you intend to quote someone, perhaps you should provide a reference or justify your statement:



You need to explain why redundancy with pilots, does not add unacceptable complexity!
...
Forum: Rotorheads
15th Mar 2019, 15:09
Replies: 46
Views: 14,043
Posted By JimL

The promotion of scud-running is quite...

The promotion of scud-running is quite astonishing.
Forum: Rotorheads
28th Feb 2019, 09:11
Replies: 165
Views: 48,826
Posted By JimL

Are you trolling me AnFI? The fact that tail...

Are you trolling me AnFI?

The fact that tail rotors were not meeting their expected reliability led to CAA action resulting in a CAP with recommendations to address the issue. It does not change...
Forum: Rotorheads
28th Dec 2018, 08:11
Replies: 30
Views: 7,608
Posted By JimL

Helops, There is a substantial difference...

Helops,

There is a substantial difference between the 'stability' of a fixed-wing aircraft and a helicopter - important for flight in IMC and the rigours of IFR.

If you look at Appendix B to...
Forum: Rotorheads
7th Dec 2018, 08:37
Replies: 2,705
Views: 2,300,715
Posted By JimL

Very sad to hear about Tony and Nick - RIP. ...

Very sad to hear about Tony and Nick - RIP.

Jim
Forum: Rotorheads
29th Nov 2018, 11:49
Replies: 1,205
Views: 583,677
Posted By JimL

Vtoss is a term that is only used in Category A...

Vtoss is a term that is only used in Category A procedures; it is used establish the Take-Off Distance Required. The definition of TODRH is:



The minimum climb performance required at Vtoss is...
Forum: Rotorheads
28th Nov 2018, 14:08
Replies: 1,205
Views: 583,677
Posted By JimL

Chopjock, you are the ultimate laxative. You...

Chopjock, you are the ultimate laxative.

You continue to put forward your ridiculous views in the face of logic and weight of informed opinion against you. It would not surprise me if you were the...
Forum: Rotorheads
28th Nov 2018, 09:00
Replies: 68
Views: 7,701
Posted By JimL

Thanks Ned - much appreciated. Jim

Thanks Ned - much appreciated.

Jim
Forum: Rotorheads
17th Nov 2018, 07:59
Replies: 68
Views: 7,701
Posted By JimL

Hi Ned, My most memorable moment, other than...

Hi Ned,

My most memorable moment, other than those associated with many hours spent in flying in many roles, including aerial work, police support operations, VIP but mainly offshore, was the...
Forum: Rotorheads
17th Nov 2018, 07:50
Replies: 18
Views: 3,396
Posted By JimL

There is not much that could be added to...

There is not much that could be added to 'fermrib's' description although this statement merits a comment:

Clearly the whole helideck area (TLOF, FATO and OFS) are clear of obstacles; the OFS...
Forum: Rotorheads
6th Nov 2018, 08:01
Replies: 165
Views: 48,826
Posted By JimL

SASless, The old adage that if you can't...

SASless,

The old adage that if you can't count it you can't manage it holds true.

With respect to the first part of your post: yes, but as soon as it was flagged that usage and failure data had...
Forum: Rotorheads
6th Nov 2018, 07:41
Replies: 617
Views: 144,771
Posted By JimL

Chopjock's view on the fuel system is supported;...

Chopjock's view on the fuel system is supported; it is the responsibility of the manufacturer to provide a system that is resistant to mismanagement. Required pilot intervention during times of high...
Forum: Rotorheads
5th Nov 2018, 15:18
Replies: 165
Views: 48,826
Posted By JimL

All helicopter engines were analysed but the...

All helicopter engines were analysed but the data-set was skinny; up to that time there was no requirement to collect usage data, and report failure - except when a reportable incident or accident...
Forum: Rotorheads
5th Nov 2018, 14:33
Replies: 165
Views: 48,826
Posted By JimL

The data that has been collected over the time...

The data that has been collected over the time since 'Exposure' was first introduced to regulations (circa 1999), indicate that that reliability has improved slightly - but not by an order of...
Forum: Rotorheads
4th Nov 2018, 14:23
Replies: 1,205
Views: 583,677
Posted By JimL

Posted on another thread but probably best here. ...

Posted on another thread but probably best here.

Engines should meet a reliability figure of 1 x 10**-5; in ICAO parlance, this qualifies them as very reliable (the reason for the low standard is...
Forum: Rotorheads
4th Nov 2018, 14:02
Replies: 165
Views: 48,826
Posted By JimL

Engines should meet a reliability figure of 1 x...

Engines should meet a reliability figure of 1 x 10**-5; in ICAO parlance, this qualifies them as very reliable (the reason for the low standard is that a failure, at worst, should only result in an...
Forum: Rotorheads
3rd Nov 2018, 11:51
Replies: 35
Views: 13,547
Posted By JimL

Flexshaft, The requirement is established in...

Flexshaft,

The requirement is established in 29.1517:

Sec. 29.1517

Limiting height-speed envelope.

[For Category A rotorcraft, if a range of heights exists at any speed, including zero,...
Forum: Rotorheads
1st Nov 2018, 11:51
Replies: 165
Views: 48,826
Posted By JimL

There is no Exposure Time in Category A...

There is no Exposure Time in Category A operations.

'The reliability programme of aircraft in operation and maintenance is a combination of statistic monitoring and recording of the events...
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