07 Nov 2025, 06:42 [ UTC - 5; DST ]
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT  Posted: 13 Dec 2013, 11:11 |
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Joined: 01/31/10
Posts: 13626
Post Likes: +7757
Company: 320 Fam
Aircraft: 58TC
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Username Protected wrote: excellent video..
Jesse, may I ask…?
it is clearly visible on that approach, that when it gets a bit turbulent…is it difficult in your opinion or very distracting on those new touchscreen radios, especially when they are mounted in the vertical, to change frequencies..?
sometimes I've got the feeling that an old fashioned turning knob on which your hand can rest could be preferable under such circumstances…however, I know everything goes direction touch screens.. Good question. In the 421, its not an issue. I have often wondered how it would be in my Bo which can be a bull ride on a summer afternoon. Pros: It does have a knob if you prefer that. It also takes signficantly less time to enter, when you get a quick break from the bumps. Cons: Obvious from the video, your hand is unstable during turb. I have found that if I plant my hand, its easier to get the softkeys with my thumb. I have a 530w next to the GTN. I kept it "just in case". Now I'm looking forward to my onboard radar dying so I "have" to get a second GTN to display a new Garmin radar. IOW, I have fallen out of love with the 530W. I use the 530w to display traffic, and enter atis/ground freqs. That's it.
_________________
Views are my own and don’t represent employers or clients
My 58TC https://tinyurl.com/mry9f8f6
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Username Protected
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT Posted: 13 Dec 2013, 11:18 |
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Joined: 01/31/10
Posts: 13626
Post Likes: +7757
Company: 320 Fam
Aircraft: 58TC
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Username Protected wrote: That was a nice landing Jesse, and I take your point that the video did perhaps not convey how rock and roll a ride it was. I came out of Donegal on the West Coast of Ireland, Monday, 32kts gusting 45kts, and that coast is rugged with hills and valleys opening up onto the cliffs and coastal plain. It was a very wild ride, and I had to bring RPM back a long way to keep her slowed down. I was getting roll, and up/down draft, and it was not my most comfortable flight!!! To say the least. The bizarre thing for me was when I landed at Derry, it was 10kts, down the runway, and yet the flow at 2k was 45kts. I told the guys on the ground what I had just experienced, and they just looked at me, in that strange way  The only landing I have ever totally aborted was in the 58P going into the moutains....with an approaching storm....when it was getting dark.... All looked good until we got below the treeline when all heck broke loose. As I approached the point of no return in the valley, with clouds below minimums on the other side of the airport, we got our butts handed to us and I threw in the towel. I called my dad, who had been on the ground at the airport, to let him know he was going to have to drive a couple hours round trip to pick us up after we diverted. He said the wind was calm on the ground and couldn't figure out why we aborted. It was a wild ride...and in the PBaron that was sayin' something.
_________________
Views are my own and don’t represent employers or clients
My 58TC https://tinyurl.com/mry9f8f6
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT Posted: 13 Dec 2013, 11:24 |
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Joined: 01/31/10
Posts: 13626
Post Likes: +7757
Company: 320 Fam
Aircraft: 58TC
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Username Protected wrote: I have panel envy!
Robert +1
Thanks guys. Robin and his pros at Howard Aviation (KPOC) overhauled my panel. It came out better than I'd hoped. I truly enjoy it every week. The Garmin glass is unbelievable...especially in weather or during an emergency (I have had three OEI approaches and SVT makes it easy).
_________________
Views are my own and don’t represent employers or clients
My 58TC https://tinyurl.com/mry9f8f6
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT Posted: 13 Dec 2013, 12:48 |
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Joined: 12/29/10
Posts: 2810
Post Likes: +2705
Location: Dallas, TX (KADS & KJWY)
Aircraft: T28B,7GCBC,E90
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Username Protected wrote: (I have had three OEI approaches and SVT makes it easy). Damn, really? 3 since you've installed the Garmin? What the heck's happening? Robert
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT Posted: 13 Dec 2013, 13:04 |
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Joined: 01/31/10
Posts: 13626
Post Likes: +7757
Company: 320 Fam
Aircraft: 58TC
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Username Protected wrote: (I have had three OEI approaches and SVT makes it easy). Damn, really? 3 since you've installed the Garmin? What the heck's happening? Robert
First one was in my 58P (also had SVT G600). I shut one down after blowing a hole in the intake manifold.
Second was a turbo failure in the 421. Broke the shaft.
Thrid was likely a MIF from turbo R&R by a mechanic that does not normally maintain my 421. The upper deck reference line to the fuel pump came loose.
None ended up as statistics and other than an elevated heart rate, they are no big deal. Shut it down, land, fix the problem, off we go!
In about 400 or so hours in the 421, the turbo was the only cause for a missed flight so far. It has been highly reliable.
_________________
Views are my own and don’t represent employers or clients
My 58TC https://tinyurl.com/mry9f8f6
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT Posted: 13 Dec 2013, 16:29 |
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Joined: 12/29/10
Posts: 2810
Post Likes: +2705
Location: Dallas, TX (KADS & KJWY)
Aircraft: T28B,7GCBC,E90
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Username Protected wrote: In about 400 or so hours in the 421, the turbo was the only cause for a missed flight so far. It has been highly reliable. Yikes... Would you mind elaborating a bit on what the symptoms were and why you elected to shut down the engine instead of keeping it running? In 2200+ hours I've only had one case where the engine hiccuped in flight and it was a turbo issue as well - The APC on my T210 died after an engine change so my manifold pressure dropped to ambient. It was on a IFR and icy day so I continued to an airport in West Virginia and landed. Once we figured that it was just a turbo controller issue, I flew the plane home as a normally aspirated bird. I've had a couple of issues with my 421 including a cracked case and a nose wheel collapse (that was the only time I've damaged an airplane in 20 years), but otherwise the dispatch reliability has been flawless. Great bird. Robert
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT Posted: 13 Dec 2013, 18:14 |
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Joined: 01/31/10
Posts: 13626
Post Likes: +7757
Company: 320 Fam
Aircraft: 58TC
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Username Protected wrote: In about 400 or so hours in the 421, the turbo was the only cause for a missed flight so far. It has been highly reliable. Yikes... Would you mind elaborating a bit on what the symptoms were and why you elected to shut down the engine instead of keeping it running? In 2200+ hours I've only had one case where the engine hiccuped in flight and it was a turbo issue as well - The APC on my T210 died after an engine change so my manifold pressure dropped to ambient. It was on a IFR and icy day so I continued to an airport in West Virginia and landed. Once we figured that it was just a turbo controller issue, I flew the plane home as a normally aspirated bird. I've had a couple of issues with my 421 including a cracked case and a nose wheel collapse (that was the only time I've damaged an airplane in 20 years), but otherwise the dispatch reliability has been flawless. Great bird. Robert
Robert,
On my P Baron, MP dropped as a result of a hole in the intake. Without being able to diagnose which side of the turbo system failed, I elected to shut down just in case I had a torch under the hood.
The turbo failure on the 421 did have some warning, but I misdiagnosed it. The airplane started making a high-pitched whistling noise. It sounded like a pressurization leak, but would only change with MP on the right engine. There were no abnormal indications on my engine monitor so I continued trying to diagnose on my way home. I flew another leg after dropping some folks off, and the whistling continued with a second pilot in the copilot seat. He had his headsets off trying to pinpoint where the noise was coming from. Climbing through about 8,000', the whistling turned to squeeling and was changing pitch.
Suddenly, the noise stopped and I lost MP on the right engine. I knew immediately what had happened. I leaned the mixture and got it running smooth NA, but again I did not know which side of the turbo had failed so I shut it down and headed home. It made book numbers OEI by the way. I was impressed.
The "whistling" was the turbine vanes scoring the turbo housing as the bearing began to fail. Finally, the shaft broke. When I got on the ground we pulled the filter and you could reach in and wobble the compressor wheel all over.
$2,000 turbo and $800 install and we were back in business. Unfortunately, I think this is when the upper deck reference line to the fuel pump was loosened...and then forgotten. All is well now.
Also, we reviewed the engine monitor download. There were no warning signs until seconds before it failed.
My family was with me in the P. Let's just say my wife is sold on twins these days.
_________________
Views are my own and don’t represent employers or clients
My 58TC https://tinyurl.com/mry9f8f6
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Post subject: Re: CAUGHT ON CAMERA - 421 APPROACH TURBULENCE AND SVT Posted: 14 Dec 2013, 14:53 |
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Joined: 10/07/11
Posts: 26
Post Likes: +2
Aircraft: Bonanza S35
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That was a very smooth landing, I couldn't tell when you touched down. I'm jealous.
That also has to be the cleanest 421 I've ever seen.
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