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Spannerfingers

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  • in reply to: Hartlepool Jet Provosts #829633
    Spannerfingers
    Participant

    December 2018 Update:

    Jet Provost T5a XW404: Following a jacking exercise, the seal on the LH main gear decided it had had enough. We are going to change the legs before the summer, so its not a major issue. The aircraft has behaved itself, but is midway through our annual Maintenance Practices teardown and rebuild.

    Jet Provost T5 XW309: A team of four students have diagnosed the Airbrake / UHF short circuit, and actually found a series of problems. They have all been corrected and the airbrakes now function as they should. We are operating on hand pump pressure only, so they do not deploy at the same time, and since the accumulators are missing their pressure gauges and a few other hydraulic components are absent, it is unlikely that we will ever run 309 at full system pressure. This aircraft is also in a state of teardown as our students complete the practical aspects of the course.

    IAMT: No help whatsoever from the previous operators or system designers, so we have the computer away in the care of a specialist who should be able to hack it….

    Gazelle: NELSAM graciously gifted us some spares which will be useful as we attempt to get the airframe complete. The unused or duplicate components will be re-gifted according to NELSAM’s wishes.

    We are constantly on the lookout to replace our fleet with something less historic… anyone got a spare Cessna Citation or two?

    Merry Christmas one and all

    in reply to: Tornado IAMT Cosford #2126970
    Spannerfingers
    Participant

    I’ll give that a try in the next few days. Thanks.

    in reply to: Hartlepool Jet Provosts #780946
    Spannerfingers
    Participant

    Thanks to Thunderbird167 and the guys/gals at NELSAM, we have taken delivery of an Integrated Avionics Maintenance Training rig – essentially a Tornado F3 systems simulator. These beasts were used to train Avionics Mechanics at RAF Cosford until reasonably recently. The question is…. do any of you remember a log in and password?…………

    in reply to: SPOTTED 2018 What Have You Seen? #792826
    Spannerfingers
    Participant

    T6 Harvard G-BJST (AJ841 “The Wacky Wabbit”) is operating out of Eshott Airfield, Northumberland this weekend. It arrived yesterday and is likely to be departing Monday.

    in reply to: Hartlepool Jet Provosts #799870
    Spannerfingers
    Participant

    The summer holidays are finally here, which means I’ve put the aeroplanes to bed for a few weeks, so here’s an update:

    Gazelle:
    Some cut-down blades have been fitted, but we desperately need a set of lag dampers. The blocks of timber simply look horrible…. Here’s a couple of pictures showing the interior. I’d like to get the instrument panel built, but its not a necessity for the functionality of the airframe. It would be nice to find a seat though….
    [ATTACH=CONFIG]261638[/ATTACH]
    [ATTACH=CONFIG]261639[/ATTACH]

    The thing which must not be mentioned:
    We have the Voltair 86… a locally-designed and built deregulated, electric motor – powered microlight.
    [ATTACH=CONFIG]261640[/ATTACH]

    XW309
    I’ve identified the airbrake snag on 309. When the switch is made, the main relay can be heard followed by a second relay making. It turns out that the second relay is actually part of the V/UHF radio system which means I have a short circuit – most likely in the throttle lever. That’ll have to be corrected in September.

    XW404
    The re-paint is complete – just a touch-up really and to preserve the structure of the aircraft for a few years. Some of the markings need to be applied, but I’m holding off on the black numbers and ‘1 FTS’ fin mark until the next set of school holidays. Next on the list is to re-inflate the nose oleo.
    [ATTACH=CONFIG]261641[/ATTACH]
    [ATTACH=CONFIG]261642[/ATTACH]

    in reply to: Aircraft aerial ID/Hydraulic pump ID help please #799953
    Spannerfingers
    Participant

    The Aerial looks like a Rebecca aerial.

    (Edit: Ninjas everywhere…)

    in reply to: RAF 100 Horse Guards Tornado #800743
    Spannerfingers
    Participant

    Have you tried getting in touch with the RAF 100 tour organisers? https://www.raf.mod.uk/raf100/news/raf100-aircraft-tour/
    IF they reply, they might be able to point you in the right direction

    in reply to: RAF 100 Horse Guards Tornado #800829
    Spannerfingers
    Participant

    ZG773. mobile display, based at RAF Leeming possibly. (RAF owned)

    in reply to: Hartlepool Jet Provosts #800868
    Spannerfingers
    Participant

    We have contacts at Bruntingthorpe, but not amongst the JP owners. We are somewhat isolated at this end of the country. When it comes to spares, we’ll need to reach out, but conversely I’m sure we can offer tech help in return.

    in reply to: Hartlepool Jet Provosts #801163
    Spannerfingers
    Participant

    Canopy motor modification details:

    Our JP’s are ground instructional airframes, and as such need to balance operating systems with the safety of our students. Neither aircraft has batteries fitted due to their obscene cost and the problems of infrequent use and charging availability. Our ground power is obtained via a 24/28V GPU.

    The JP mk5 electrical system has a couple of peculiarities, one of which is the requirement to open and close the canopy without external power. With this in mind, the canopy motors are operated from the Essential (battery) bus bar, but this is dead for our aeroplanes – the peculiarity being that the battery bus does not receive power from the external GPU at any time. We could have just ran a link from a powered bus, but we want the ignition system to stay dead for now. In order to keep the ignition system and the crash switches isolated, but get the canopy motors functioning, we have performed the following modification:

    This modification allows the use of the electric canopy without the requirement for batteries to be installed. This modification maintains Ignition system isolation for safety reasons.

    Embodiment
    1: Remove fuse E13 (IFF/SSR)
    2: Remove Fuse D13 (canopy selection)
    3: Remove link between Fuse D13 and post +A
    4: Install link between fuse D13 and post +3 (Fuse bank B bus bar)
    5: Refit fuse D13
    6: Remove link between Fuse F5/F6 Bus bar (Canopy motors) to post +A (Battery Bus)
    7: Install link between Fuse F5/6 bus bar (Canopy motors) to Fuse F1/2/3/4 bus bar. (Inverters & radio)

    This allows the canopy 20A fuse to be run from the same bus bar as the Inverters (also 20A). We have restricted operation to EITHER canopy or inverters, just so we keep the current as low as possible, but there is no physical block to operating both at the same time – I just don’t have 100% faith in our electrical system. I’ll try to get a copy of the new wiring diagram on monday.

    in reply to: Pre Digital Aircraft Photos #447988
    Spannerfingers
    Participant

    Vultee – the engineer referred to in regards to the DC3 at Newcastle has only just stopped engineering at that airfield… 86 and still maintaining aeroplanes. He’s still grumpy.

    in reply to: Hartlepool Jet Provosts #801501
    Spannerfingers
    Participant

    We have two possible candidates, but neither have run since service. I can see some long hours with a boroscope on the horizon. At this stage, there are other things preventing a ground-running aircraft such as the fuel system serviceability, but we’re investigating the possibility.

    in reply to: Hartlepool Jet Provosts #801641
    Spannerfingers
    Participant

    XW405
    [ATTACH=CONFIG]261613[/ATTACH]

    XW404
    [ATTACH=CONFIG]261614[/ATTACH]

    XW309
    [ATTACH=CONFIG]261615[/ATTACH]
    [ATTACH=CONFIG]261618[/ATTACH]

    Gazelle
    [ATTACH=CONFIG]261616[/ATTACH]

    Cheetah
    [ATTACH=CONFIG]261617[/ATTACH]

Viewing 13 posts - 1 through 13 (of 13 total)