[ARC5] B-17 Crash Near Hartford CT
Richard Knoppow
1oldlens1 at ix.netcom.com
Fri Oct 4 13:53:31 EDT 2019
See:
https://en.wikipedia.org/wiki/Avgas
This appears to be reasonably authentic after comparing it to
other sources.
Avgas carries two octane ratings as explained in the article.
On 10/4/2019 8:05 AM, scottjohnson1 wrote:
> FWIW, air tankers such as DC7s and P2Vs have had to deal with
> reduced manifold pressure limits when using 100LL for many
> years. Not a huge issue for experienced pilots and engineers.
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
> -------- Original message --------
> From: Francesco Ledda <frledda at att.net>
> Date: 10/4/19 01:50 (GMT-07:00)
> To: Doran Platt <jeepp at comcast.net>
> Cc: ARC-5 Mail List <arc5 at mailman.qth.net>
> Subject: Re: [ARC5] B-17 Crash Near Hartford CT
>
> Yes, but it is not available. 100LL can be used at reduced
> manifold pressure to avoid pre ignition. Reduced MP means less
> power. Preignition can quickly destroy an engine.
>
> Sent from my iPad
>
> On Oct 4, 2019, at 03:40, Doran Platt <jeepp at comcast.net
> <mailto:jeepp at comcast.net>> wrote:
>
>> Didn't thse engines need 115/145 avgas?
>>
>>> On October 4, 2019 at 12:21 AM Mark K3MSB
>>> <mark.k3msb at gmail.com <mailto:mark.k3msb at gmail.com>> wrote:
>>>
>>> NTSB Press Briefing
>>>
>>> https://www.youtube.com/watch?v=RoLU-I6C4Uo#action=share
>>>
>>> Pilot radioed ATC they had a problem with an engine. NTSB has
>>> the engine.
>>> Fuel sample in right wing -- 100 LL
>>> A/C made initial contact with the approach lights about 1000
>>> ft from threshold end of RWY 06; hit 30 approach lights total.
>>>
>>> 73 Mark K3MSB
>>>
>>>
>>>
>>> On Thu, Oct 3, 2019 at 8:52 PM Peter Gottlieb <
>>> kb2vtl at gmail.com <mailto:kb2vtl at gmail.com>> wrote:
>>>
>>> The NTSB investigators are very good and I'm sure they
>>> will be thorough and
>>> figure out what happened.
>>>
>>> Peter
>>>
>>>
>>> On 10/3/2019 8:45 PM, CARL HUETHER wrote:
>>> >
>>> > I suspect a very few (thankfully) on here are fueled
>>> with adult beverages and
>>> > are unable to control their fat mouth from spewing venom.
>>> >
>>> >
>>> >
>>> >> On October 3, 2019 at 7:54 PM Peter Gottlieb <
>>> kb2vtl at gmail.com <mailto:kb2vtl at gmail.com>> wrote:
>>> >>
>>> >> Well like one person suggested, it may have been fueled
>>> with jet-a. Easy to
>>> >> determine.
>>> >>
>>> >>
>>> >> Peter
>>> >>
>>> >>> On Oct 3, 2019, at 7:18 PM, Mike Bracey <
>>> mikebracey at att.net <mailto:mikebracey at att.net>> wrote:
>>> >>>
>>> >>>
>>> >>> It sounds like the pilot might have stalled the plane
>>> trying to make it back
>>> >>> back to the field. The mystery is why was he losing
>>> power. A B-17 will fly
>>> >>> all day on 3 engines. The first rule is fly the plane.
>>> After control is
>>> >>> established, cut the fuel to the bad engine, feather
>>> the prop and pull the
>>> >>> fire bottle. Then make the pattern to a normal
>>> landing. Most air disasters
>>> >>> are caused by a sequence of events rather than one
>>> thing. I'm thinking this
>>> >>> will be the same. It will be interesting to see what
>>> the investigation turns up.
>>> >>>
>>> >>> Mike
>>> >>> KE5YTV
>>> >>>
>>> >>> On Thursday, October 3, 2019, 3:18:03 PM CDT, Richard
>>> Knoppow
>>> >>> < 1oldlens1 at ix.netcom.com
>>> <mailto:1oldlens1 at ix.netcom.com>> wrote:
>>> >>>
>>> >>>
>>> >>> Yes, this makes sense. I meant only that a single
>>> engine
>>> >>> going out does not sound like running out of fuel
>>> although it
>>> >>> could still be a fuel problem such as a leak or
>>> something else
>>> >>> that would prevent fuel from getting to the engine.
>>> Might also
>>> >>> account for the fire.
>>> >>>
>>> >>> On 10/3/2019 12:59 PM, gordon white wrote:
>>> >>> > Engine failure on takeoff is not usually from
>>> running out of oil,
>>> >>> > but maximum power used briefly on takeoff (METO) is
>>> more than
>>> >>> > allowed for cruise, and takeoff power does stress an
>>> engine. A
>>> >>> > cylinder on a radial can come loose from the
>>> crankcase, or a
>>> >>> > piston break. I was on a DC-7 that lost an engine
>>> and it was
>>> >>> > pretty scary. The unbalanced forces from losing an
>>> engine are
>>> >>> > difficult to control. The pilot has to feather the
>>> dead engine,
>>> >>> > deploy the fire extinguishers (and not feather the
>>> wrong engine)
>>> >>> > in a very brief period of time. Some light twins, if
>>> you lose one
>>> >>> > engine on takeoff you can be flipped upside down if
>>> you don't cut
>>> >>> > the other one.
>>> >>> >
>>> >>> > - Gordon White
>>> >>> >
>>> >>> >
>>> >>>
>>> >>> --
>>> >>> Richard Knoppow
>>> >>> 1oldlens1 at ix.netcomcom
>>> <mailto:1oldlens1 at ix.netcom.com> <mailto:
>>> 1oldlens1 at ix.netcom.com <mailto:1oldlens1 at ix.netcom.com>>
>>> >>> WB6KBL
>>> >>>
>>> >>>
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--
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL
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