This is a further complication in analysis of root cause of aircraft accidents. Some months back I started compiling a list of Australian Defence Force helicopter accidents by helicopter type and cause. It all became "too hard". Australia lost a lot of Westland Seaking helicopters in RAN service. Many ditched due to apparent mechanical issues. However the last and most notable loss at Nias was finally found to be due to the installation of an incorrectly sized split pin. So while a mechanical failure, it was due to human error in maintenance. Investigation found more systemic issues existed with maintenance activities at the time, so not an isolated error.

We appear to be in violent agreement. :ok:

Italian Marina final SH90 delivered and sim
 

In positive news, Italian Marina has taken delivery of its last SH90 NFH and a full motion sim.

https://www.leonardo.com/en/press-re...aeli-luni-base

https://www.leonardo.com/o/adaptive-...R3_5933+lr.jpg

https://www.leonardo.com/o/adaptive-...A9A5507+lr.jpg

cheers

Here is hoping that the logistical co-location potential is realised. The "green" workforce impacts will be interesting. As for Romeo serviceability, it is not as good as you think. They are struggling and have been for a while. Training is taking far longer than it should and hours are low.

Will be interesting to see how integrating with US Army supply system will work out. It seems that every iteration of modernization in regards to Army maintenance management and supply systems the promised efficiencies never seem to materialize.

Anecdotally, we we far more efficient when we were scanning through a paper log book, clearing deficiencies was faster and the biggest “crash” of the system was if you accidentally opened the binder rings on a windy day! 🤣 Then you would have to spend a bit reassembling the book, hopefully will all the pages intact.

Of course, the insanity of that system was the Army flew with that book actually on the aircraft, so a fair bit of information could be lost in an accident if it hadn’t been transcribed in a timely manner.

The new electronic systems allow more visibility in aircraft records and supply information, which means more people want to take advantage of that visibility(whether they REALLY need access or not) which creates layers of additional information security, thereby slowing network access.

FltMech

My apologies for intruding into this forum/thread but I am confused how, if the '90 is such a dog to keep serviceable, is the RNZAF is getting 75% availablity on its fleet with a reported average 23 flying hours per aircraft last February? Cost per flying hour reportedly NZD1400 (USD826/GBP684 at today's rates)

Stop asking questions like that

Probably opening a big can of worms here, but I’m genuinely curious, What is the RNZAF fleet size?

23 hours a month for every aircraft, or 23 hours/month for certain aircraft, on a rotating basis?

Don’t want to dismiss what RNZAF is doing as they have a different operational environment than other militaries, but that doesn’t seem like a lot of flying hours. I think a lot of aircraft could have that level of availability with that amount of usage.

And as discussed previously, the amount of manufacturer support available, and the structure of the maintenance system makes a huge difference.

FltMech

Thanks, 60FltMech. It's a (very) small fleet, eight were purchased plus 'one for spares'. NZ deliberately bought the virtually the same config as Oz, to provide commonality in maintenance etc. with its closest operating partner. I understand NHI states worldwide availability is about 40%.

the operating cost of $1400 hr is direct operating cost , fuel etc (450 l/hr x $2.00+ per L) not total operating cost , that cost doesn't include wages, maintenance etc. NZ and other countries like Oman are getting 60% + serv rates but at a substantially higher manning requirement. (combined Mil, Civil and Airbus personnel)

“operating cost of $1400 hr is direct operating cost , fuel etc (450 l/hr x $2.00+ per L) not total operating cost , that cost doesn't include wages, maintenance etc”

So once those costs are added I would predict a similar operating cost per hour as other medium helicopters. I’d love to support a fleet of 9 or less helicopters…oh wait I have! 🤣

The 8 UH-60L aircraft of the Air Ambulance Detachment I was a contract maintainer/crewman on had to have at least 75% availability, below that someone had some explaining to do. Approximately 50 contractors directly supported that fleet initially then some of the major scheduled maintenance was done by another group.

it’s nice to be able to know in depth the condition of every aircraft, it’s little nuances etc. probably the most fun working I’ve had in 22 years in maintenance.

How is the maintenance structured in the Australian army? I’m always curious how others approach things.

FltMech

:ok:
Don't think this has been posted.

https://www.thedrive.com/the-war-zon...finally-ending

Tributes given today in Australian Parliament House for the four lost aircrew of the Australian Army MRH-90 which crashed off the Queensland coast. The Prime Minister, Leader of Opposition, Defence Minister and Shadow Defence Minister all spoke. A moment of bipartisanship.

Do we already know the cause of the crash? I guess it’s not technical as otherwise this would be put wide in the open to state: see the NH90 is dangerous, a terrible machine we’re grounding it and so should the rest of the world. As the rest of the world continues to fly “happily” I guess something else is going on?

The dedicated thread had some rumours, that resulted in the posters being flamed! But, I suspect time will show them to be true.

Not that I am aware from any public reports. My post #295 links to an NH Industries statement indicating no data so far suggesting accident relates to "aircraft design". However to be complete, NHI should also have included comment on the circumstances of the earlier two major, but fortunately not fatal, Australian MRH-90 incidents. Then again, if the ADF was more open with disclosure regarding such incidents, a manufacturer wouldn't feel compelled to publicly defend their product, at least from a safety perspective.

The opposition leader had an indirect dig at the MRH-90 as part of his tribute statement in parliament yesterday. He could be reminded that the decision to acquire this type in 2004 was made by the then Liberal Defence Minister Robert Hill, seemingly at odds with an earlier recommendation from the department (see my post #285). Hill also put us on the track of the much delayed JSF in what came across like an 'overnight decision' at the time.

We were in the public gallery on Monday and if you wish, consider that we represented Ppruners when the entire house
​​stood for a moments silence.
Lest we forget

I heard at the Global Defence Helicopter show today that many of the operators (especially Sweden) were ranting about how unreliable and expensive the NH90 is and how they're all planning on moving to Black Hawks.

...well contrast that with the plans of NH Industries outlined in this article:

https://www.flightglobal.com/helicop...155235.article

A few extracts:

"NH Industries (NHI) is for the first time considering arming the NH90 transport, potentially offering a range of weapons – including rockets and guided missiles – as part of a future mid-life upgrade for the helicopter... the naval NFH variant carries torpedoes for anti-submarine warfare missions, options on the TTH troop transport variant have been largely limited to door guns, albeit Middle Eastern customer Oman has equipped some of its fleet with podded 20mm cannons..."

"Underpinning the upgrade plan are two key developments, however. First is an extension to the helicopter’s lifespan, taking it to 50 years from 30 currently... Feasibility studies supporting the lifetime extension (LTE) were completed earlier this year and revealed that no modifications would be required to achieve the longer service life... [The LTE] doesn’t come with a caveat or a pre-requisite: you take the aircraft as they are, and the lifetime can be extended without any particular intervention or retrofit.”

"NHI... has around 90 helicopters still in its backlog, having delivered the 500th example in March this year... Aloccio sees potential to add another 50-100 helicopters to the orderbook by 2028".

A Service Life Extension Program ... without actually doing anything? That's an odd claim. This may be a case of less-than-thorough reporting.