|
mrloudly
2,164 posts
105 months
|
Leadfoot said: mrloudly said: eccles said: mrloudly said: Leadfoot said: Plenty of parts in civilian engines are on a life limit too, usually the rotating parts. They are on a limit but in certain aircraft you can continue past this running on what is termed as "On Condition". I got nearly 2500 hrs out of an Lycoming that was officially considered "Time expired" at 2000 hrs You'd be happy flying in an airliner with turbine blades that were on condition? Certain parts can only have their life extended so far and critical bits will rarely be "on condition". As long as they have been inspected properly quite happy. I like the old saying "If it ain't bust don't fix it"... Never like getting on brand new low houred airliners. Qantas 380 is a classic example! If it manages 2000hrs I'm sure it'll get to three (with the correct inspections). I meant commercial airliner jet engines, not light aircraft piston engines (on a private C of A?). The life limited parts can't be inspected without dismantling the engine anyway - bits like fan/turbine discs (not the blades), shafts & compressor drums. You might just as well overhaul the engine & "zero time" it at that stage. They'd have to be x-rayed to inspect them, but I believe they're scrapped due to the stresses involved & the consequence of failure - the Sioux City DC10 was a fan disc failure. Life limited parts of a modern jet engine have very long life... Page 3 of this link (1st thing google threw up) gives an insight into LLPs on 737 engines. http://www.aircraft-commerce.com/sample_articles/s... The Sioux city was a hidden manufacturing fault though, hence my reason in preferring older aircraft ;-) It's OK scrapping lifed components if you have new replacements, in this case there isn't any... So is it possible to strip/inspect "zero time" the units and in effect run them "On condition"? You are also correct that it's not possible to run "on condition" with a public cat CoA I thought 558 was on a "permit" anyhow?
|
|
|
Leadfoot
1,827 posts
151 months
|
The Sioux City crash fan disc was 17 years old.... it had already been inspected before during engine overhaul, but was still short of its life limit.
No, LL parts cannot be run on condition after the limit expires.
"On condition" maintenance requires there be a way of inspecting parts in service (i.e. borescope inspecting blades/combustion chambers etc.), or monitoring them (i.e. engine condition monitoring of EGT/vibration/Fuel flow etc.) to show signs of degradation & impending failure. As these bits either work as advertised or fail catastrophically without warning they are replaced after a set number of hours/cycles operation during shop overhaul.
From what I've read of XH558, although a permit to fly aircaft, the CAA are making them operate it as per an airliner.
I guess the CAA are less worried about your lycomming dropping onto 5 pots as you potter around the skies than an olympus grenading over an airshow crowd?
|
|
|
gmk666
1,642 posts
95 months
|
gmk666 said: I'll post a crappy iPhone pic later. Told you it was crappy. 
|
|
|
onyx39
3,648 posts
20 months
|
gmk666 said: gmk666 said: I'll post a crappy iPhone pic later. Told you it was crappy. Yep!  Thanks for posting though!!
|
|
|
Mojocvh
Original Poster
12,903 posts
132 months
|
gmk666 said: gmk666 said: I'll post a crappy iPhone pic later. Told you it was crappy. Nope, that's great!
|
Advertisement
|
|
|
Chaz9950
154 posts
14 months
|
Just stumbled on the thread!
I know I'm pretty young, (23, awwww, LOL!), and I am not in any way an aircraft 'buff', but...
My granddad worked on this very plane, XH558, at Bruntingthrope, for about 10 years. I can't be totally sure how long it was. He was in the RAF (albeit just as long as his national service required), and had a love for aircraft. And obviously, very patriotic! He worked for free, or very very little pay, but loved it all the same.
Going back quite a few years now, I had the pleasure of sitting in the cockpit! It was on stands, and was only partially constructed, but it's still über cool!
I really REALLY hope this goes on to fly for a long time.
Anyway, I've wrote a bit and not actually said anything, lol.
|
|
|
aeropilot
7,071 posts
97 months
|
Seight_Returns said: I recall that they started with a pool of 8 zero houred engines - and as of last year they were down to 6 airworthy ones.
Vague recollection though - happy to be corrected on any of the above. That's about right, although I do believe, that, while one of the original 8 is now dead, the 7th is a 'maybe' for a possible repair.
|
|
|
NismoGT
1,556 posts
60 months
|
|
|
heisthegaffer
520 posts
68 months
|
NismoGT said: Stunning... Can't wait to see her again this year.
|
|
|
Mutley
2,137 posts
129 months
|
|
|
skinley
1,083 posts
30 months
|
Chaz9950 said: Just stumbled on the thread! My granddad worked on this very plane, XH558, at Bruntingthrope, for about 10 years. I can't be totally sure how long it was. 97 ft 1 in (29.59 m) HTH.
|
|
|
mad4amanda
1,106 posts
34 months
|
Think I heard on the news the pilot for the flight was the leader of Blackbuck missions too !
|
|
|
spitfire-ian
2,767 posts
98 months
|
mad4amanda said: Think I heard on the news the pilot for the flight was the leader of Blackbuck missions too ! Yes, Martin Withers was flying yesterday and was the one who piloted the first Black Buck mission in the Falklands.
|
|
|
jurbie
877 posts
71 months
|
Saw her yesterday at Donington Park as well. You kind of get used to the roar of jet engines at Donington so it was a bit of surprise when the missus nudged me and pointed her out coming in low over East Midlands airport. Half an hour later and she was back once again doing a low pass over the airport before banking north and I guess heading for home.
It was an odd manoeuvre that she did over EMA as on approach she was so low that from my position on the infield at Donington it looked like she was taking off and on the return it looked like she was landing which even prompted the missus to ask why the landing gear wasn't down.
My guess is it must have been a fun little flyby for the ATC at EMA or even perhaps the airpark where there is a static Vulcan. Imagine being in the ATC tower and being buzzed by a Vulcan!
|
|
|
FourWheelDrift
56,809 posts
154 months
|
jurbie said: My guess is it must have been a fun little flyby for the ATC at EMA or even perhaps the airpark where there is a static Vulcan. Imagine being in the ATC tower and being buzzed by a Vulcan! "Tower, this is Ghost Rider requesting a flyby." "Negative, Ghost Rider, the pattern is full. " He'd spill more than his coffee if it did
|
|
|
Tyre Tread
6,351 posts
86 months
|
jurbie said: Saw her yesterday at Donington Park as well. You kind of get used to the roar of jet engines at Donington so it was a bit of surprise when the missus nudged me and pointed her out coming in low over East Midlands airport. Half an hour later and she was back once again doing a low pass over the airport before banking north and I guess heading for home.
It was an odd manoeuvre that she did over EMA as on approach she was so low that from my position on the infield at Donington it looked like she was taking off and on the return it looked like she was landing which even prompted the missus to ask why the landing gear wasn't down.
My guess is it must have been a fun little flyby for the ATC at EMA or even perhaps the airpark where there is a static Vulcan. Imagine being in the ATC tower and being buzzed by a Vulcan! More likely what Mutley said above: Mutley said: The emotional service at the National Memorial Arboretum in Staffordshire, attended by hundreds of current and ex-services personnel and their families, ended with a fly-past by a Vulcan bomber and three military helicopters. Not so far away from Donington.
|
|
|
Hooli
21,469 posts
70 months
|
skinley said: Chaz9950 said: Just stumbled on the thread! My granddad worked on this very plane, XH558, at Bruntingthrope, for about 10 years. I can't be totally sure how long it was. 97 ft 1 in (29.59 m) HTH. 
|
|
|
jurbie
877 posts
71 months
|
Tyre Tread said: More likely what Mutley said above: Mutley said: The emotional service at the National Memorial Arboretum in Staffordshire, attended by hundreds of current and ex-services personnel and their families, ended with a fly-past by a Vulcan bomber and three military helicopters. Not so far away from Donington. I saw it on the news as well so figured that was where she was going. I certainly didn't think Donington Park had booked her to entertain the few dozen people that can be bothered to turn up for what was essentially a club meeting.
|
|
|
Eric Mc
67,846 posts
135 months
|
FourWheelDrift said: jurbie said: My guess is it must have been a fun little flyby for the ATC at EMA or even perhaps the airpark where there is a static Vulcan. Imagine being in the ATC tower and being buzzed by a Vulcan! "Tower, this is Ghost Rider requesting a flyby." "Negative, Ghost Rider, the pattern is full. " He'd spill more than his coffee if it did He'd also have a go at yuou for calling it a "pattern". Next time you see Martin Withers, ask him what it's like to fly a Vulcan down the Grand Canyon at below rim height.
|
|
|
onyx39
3,648 posts
20 months
|
spitfire-ian said: Yes, Martin Withers was flying yesterday and was the one who piloted the first Black Buck mission in the Falklands. More by luck than judgement though!  Would have been nice if one of the Military Helicopters was "Bravo November" but I beleive that is (or certainly was) in Afganistan
|
|
