Seajet XZ439 (N94422)
Join Date: Aug 2005
Location: Not Ardua enough
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John I certainly don't have quite your knowledge on this...But...from memory and it was over 20 years ago now, ...We did dozens of different timed accel checks, JPT limiter-trip switches (a pain to wirelock) on and off, slam checks, min bleed, max bleed.. etc etc... ad nauseam... Test set connected sooties happily ensconced in sound proof room. We would run until bingos, 250 a side ? just to check that as well ! Then refuel and carry on, certainly a whole shift.
At one point I was required to stand in the undercarriage bay during Max slam check nozzles down ! Whilst checking some or other voltage drop... We used to run on a purpose built ERP gridded with an efflux pit underneath. If the run had to be repeated for some reason, my shoes would gradually melt and attach themselves to the gridding...
This was post Major servicing on GR's and SHAR's in most cases. Although later on in the field with the GR's we often simply did a tie down for post engine change. Vivid memories of one young sootie on his first engine run get a little to aggressive with the throttle and skid an untied aircraft about 30yds down the tin strip we were running on against the brakes...He looked quite chastened when he stepped out.
At one point I was required to stand in the undercarriage bay during Max slam check nozzles down ! Whilst checking some or other voltage drop... We used to run on a purpose built ERP gridded with an efflux pit underneath. If the run had to be repeated for some reason, my shoes would gradually melt and attach themselves to the gridding...
This was post Major servicing on GR's and SHAR's in most cases. Although later on in the field with the GR's we often simply did a tie down for post engine change. Vivid memories of one young sootie on his first engine run get a little to aggressive with the throttle and skid an untied aircraft about 30yds down the tin strip we were running on against the brakes...He looked quite chastened when he stepped out.
Last edited by ARINC; 12th Nov 2007 at 10:38.
Second flight on Sunday. Hydraulic problem led to an emergency landing on the VSTOL grating at Pax River. Nose gear and starboard outrigger folded.
Pictures on the Home page at http://www.nallsaviation.com/index.htm
Pictures on the Home page at http://www.nallsaviation.com/index.htm
Join Date: Sep 2006
Location: Netherlands
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A video showing the emergency landing can be found at
http://www.nallsaviation.com/landingvideo.htm .
http://www.nallsaviation.com/landingvideo.htm .
Join Date: Feb 2007
Location: Maryland
Age: 64
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At my earliest, I'll post info on the cause. All the moral support is greatly appreciated. I said it a year ago, she will fly....again. Sheet metal fixes are cake. Art already has parts coming. We will go over the Pegasus. No damaged noted aft of the cockpit.
As we have said over and over... we'll fly in two weeks.
As we have said over and over... we'll fly in two weeks.
Join Date: Feb 2007
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Age: 64
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seajet parts
Hey guys! does anyone have or can you steer me to a Dowty Seal part number reference ie: part number to dimentions?
also looking for part numbers for the hose and pipe fittings used throughout the SHAR, We know they are British Standard pipe parallel (BSPP) but the ball end of the pipe is driving our suppliers nuts. they all want us to re-invent the wheel.
We are in work on repairs to her and expect to get her back in the air by the end of FEB. "you know... two weeks...
also looking for part numbers for the hose and pipe fittings used throughout the SHAR, We know they are British Standard pipe parallel (BSPP) but the ball end of the pipe is driving our suppliers nuts. they all want us to re-invent the wheel.
We are in work on repairs to her and expect to get her back in the air by the end of FEB. "you know... two weeks...
Join Date: Jan 2007
Location: United States
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Well, we're making progress. The hydraulic system (with an emergency blow down system installed and tested) has been exercised, bled, and serviced. 8 gallons of fluid used to top it off and I don't think the system holds 8 gallons. It's in there somewhere.
All the struts have been reserviced, including the nose strut, and all the tires checked. For the first time in 8 months, the airplane is off the jacks and on the ground.
We did a couple of short cycles on the GTS to ensure that it has oil to it (remember it's been dry for 8 months) and it started on the first serious attempt to do so. No problems, and we've got 4 spares.
Our EFIS is in place, instead of the original HUD, the seat is reinstalled, and MOST of the sheet metal work has been completed. We expect to have that done and near ready for paint, this weekend. We also expect to start the ground runs again to check the accels, pressures, and have the hyd system running on its own power, not the ground power unit. Once we deplete all the remaining fuel, we'll re-do a weight and balance due to all the wiring, clamps, fasteners, and HUD removed. I expect we've removed 60 lbs or so, all from the nose, so we've got to recheck our balance within acceptable limits.
We're shooting to have her in the air the first few weeks of August. If we can make that schedule, we're shooting to have the FAA requirements satisfied and our FIRST AIRSHOW in September.
As with all the airshow promoters, they want the SHAR, but are out of money. This airshow is within 80 miles of home base and has a crowd in excess of 250K, so this is worth the gamble to show people THIS IS REAL.
To offset our costs, we will be posting on Ebay to sell the advertising rights to the top of the wing and vertical fin for this first show. Hopefully, we can get enough to cover the fuel costs to get it there and back.
We're moving out now!
Art Nalls
All the struts have been reserviced, including the nose strut, and all the tires checked. For the first time in 8 months, the airplane is off the jacks and on the ground.
We did a couple of short cycles on the GTS to ensure that it has oil to it (remember it's been dry for 8 months) and it started on the first serious attempt to do so. No problems, and we've got 4 spares.
Our EFIS is in place, instead of the original HUD, the seat is reinstalled, and MOST of the sheet metal work has been completed. We expect to have that done and near ready for paint, this weekend. We also expect to start the ground runs again to check the accels, pressures, and have the hyd system running on its own power, not the ground power unit. Once we deplete all the remaining fuel, we'll re-do a weight and balance due to all the wiring, clamps, fasteners, and HUD removed. I expect we've removed 60 lbs or so, all from the nose, so we've got to recheck our balance within acceptable limits.
We're shooting to have her in the air the first few weeks of August. If we can make that schedule, we're shooting to have the FAA requirements satisfied and our FIRST AIRSHOW in September.
As with all the airshow promoters, they want the SHAR, but are out of money. This airshow is within 80 miles of home base and has a crowd in excess of 250K, so this is worth the gamble to show people THIS IS REAL.
To offset our costs, we will be posting on Ebay to sell the advertising rights to the top of the wing and vertical fin for this first show. Hopefully, we can get enough to cover the fuel costs to get it there and back.
We're moving out now!
Art Nalls
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Join Date: Mar 2006
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Art,
great news !
While we don't have figures to hand, my father who was 439's first crewchief reckons 8 gal's of hydraulic fluid sounds a lot !
Then again, as you say, where could it go ?
Like the sound of your airshow plans, wishing you and your team all the best.
Andy
great news !
While we don't have figures to hand, my father who was 439's first crewchief reckons 8 gal's of hydraulic fluid sounds a lot !
Then again, as you say, where could it go ?
Like the sound of your airshow plans, wishing you and your team all the best.
Andy
Join Date: Feb 2007
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Most of the hyd fluid went into a bucket as we bled the system of all the air we bled every port at least three times to ensure ALL Air was out of the system per the manual. Some of the eight gallons was also blown out during the multiple ops checks of our emergency blow down system. So, not all of it is in the system. The system is serviced per the manual, fluid and nitrogen pre-charge to the resevior and the accumulators.
Anyway, for all that root for us a very humble and grateful thank you.
and those that don't ....well you don't matter to us. We're going flying.........
in The only civilian owned and operated SeaJet.
Anyway, for all that root for us a very humble and grateful thank you.
and those that don't ....well you don't matter to us. We're going flying.........
in The only civilian owned and operated SeaJet.
