B: Still Stuck in New Orleans

[Bob Butt]

Paraphrased exerpt from the CPA Tech note.

There are several aircraft lamps available that are a direct physical
interchange with the landing lamps and have a much longer service life
expectation. An example of such an interchange would be the 4509 (13 volts,
100 watts, 110,000 candlepower, 25 hour life) being replaced by a 4595 (13
volt, 100 watt,  10,000 candlepower, 300 hour life). 4522 (13V, 250W,
290,000CP, 25HR) replace with 4537 (13V, 100W, 200,000CP, 25HR). This
particular one has a slightly narrower beam width.

As may be noted, there is no free lunch and most of the replacements have
only about 1/2 the candlepower output of the original. Since illumination is
a square root function the replacements only suffer about a 25 to 30 percent
actual reduction in visibility distance and the horizontal and vertical beam
spread is very similar.

BB:

H-35



----- Original Message -----
From: "Dan Barclay" <dbarclay at pnx.com>
To: <beech-owners at beechcraft.org>
Sent: Thursday, November 01, 2007 10:38 AM
Subject: RE: B: Still Stuck in New Orleans


> I don't know the equipment specifics, but a "generic" suggestion from the
> symptoms would be to check the breaker.  As breakers age they'll get a bit
> of resistance, which builds up heat, which looks like too much load to the
> trip.
>
> If your current bulbs are what was designed for the system you shouldn't
> have to find lower current bulbs.  In fact if the breaker is a problem it
> will eventually be a problem with lower current bulbs as well.
>
> Dan
>
> > -----Original Message-----
> > From: beech-owners-bounces at beechcraft.org [mailto:beech-owners-
> > bounces at beechcraft.org] On Behalf Of brad haslett
> > Sent: Thursday, November 01, 2007 12:28 PM
> > To: beech-owners at beechcraft.org
> > Subject: Re: B: Still Stuck in New Orleans
> >
> > My discovery of that issue came on the third leg home
> > after landing at night with both landing lights on and
> > popping a circuit breaker while parking.  Here's the
> > question, is there a landing light bulb out there
> > somewhere that draws less current that could be
> > installed on older Bo's with an STC.  My research so
> > far has revealed nothing.
> >
> > Brad
> > --- Jmajane F-35 <jmajane at yahoo.com> wrote:
> >
> > > Kit is about $1000 then you have the installation
> > > costs.
> > >
> > http://store.wagaero.com/product_info.php?products_id=2217
> > >
> > >   John Majane
> > >
> > >
> > > Rob Thomas <rwt at n-voice.com> wrote:
> > >   Definitely if I had a problem I'd be looking into
> > > it. My bird is also
> > > an E-35, with the e225 engine. I only use one
> > > landing light while on
> > > the ground, both of them seemed like too much.
> > > Besides, with any luck I
> > > won't have to change them as often. I didn't have a
> > > problem with
> > > anything, even though I had that light on for 45
> > > minutes. 30 of it on
> > > the ground according to the Garmin GPS log. Busy
> > > airport. I noticed a
> > > good charge on the ammeter for about 10 minutes then
> > > it went back to
> > > just about nothing.
> > >
> > > So how much does a conversion go for these days?
> > >
> > > Rob
> > >
> > > On Thu, 2007-11-01 at 08:39 -0500, Lance Fisher
> > > wrote:
> > >
> > > > One of the first upgrades I did to the E-35 I
> > > owned was the
> > > > conversion
> > > > from generator to alternator. After having the
> > > battery voltage drop
> > > > low
> > > > enough to cause comm problems with the radios
> > > while taxiing from one
> > > > side of a large metropolitan airport to the other
> > > at night I
> > > > concluded
> > > > that a generator just wasn't good enough for me.
> > > My E-35 had no taxi
> > > > light and each of the two landing lights drew 20
> > > amps. Combined with
> > > > the nav lights, beacon, and other essentials, I
> > > didn't have a prayer
> > > > of
> > > > making the 15 minute taxi without depleting the
> > > battery's charge
> > > > unless
> > > > I idled the engine above 1600 RPM and rode the
> > > brakes or taxied
> > > > without
> > > > lights. But if your flying is almost entirely a
> > > daytime affair I see
> > > > nothing wrong with a generator except perhaps that
> > > batteries seem to
> > > > last longer with an alternator keeping them fully
> > > charged.
> > > >
> > > > -lance
> > >
> > >
> > >
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