Flatlander heading to Boulder, CO -- need sage advice

Doug wrote:
Just take off in Atlanta and climb to 6500'. Stay at that altitude and
when you get to Boulder, you will be at pattern altitude! (actually
pattern altitude is 6300'). Run at full power. Lean for best rpm (at
6300'). See how far out the lean knob is? That is how far out it should
be for takeoff too (plus 3 half turns in). We lean on the ground at
runup for takeoffs at these altitudes. Learn how to do that if you
don't know how. This time of year is bumpy below the cumulus and if we
have rain, it is thunderstorms you can see and go around. So go around
them. The weather is good for flying in the summer in Colorado. Have
fun and see ya!


By September, the Tstorms will be gone (we hope!) but it'll still
be a bit warm. Mid-Kansas, go up to 8500 -- air will be
smoother (usually), and a great view of the Rockies.

Jim Macklin wrote:
Just be aware that on a hot day in the Denver area, 35C is
possible, even higher on the air above the paved runway.
That can make the density altitude near 10,000 feet on the
surface. Take-off performance and service ceilings will be
reduced. Climb gradient will be shallow. Pack like a
backpacker. If you land with a lot of luggage, remember for
the return home, UPS and FedEx can reduce you load of
non-essentials for the departure for home.

Today, it was 37-40C depending where you were.

It was 40 C here in Wichita today, MSL 1332, DA about 4,500.



"Blanche Cohen" wrote in message
...
| Jim Macklin wrote:
| Just be aware that on a hot day in the Denver area, 35C
is
| possible, even higher on the air above the paved runway.
| That can make the density altitude near 10,000 feet on
the
| surface. Take-off performance and service ceilings will
be
| reduced. Climb gradient will be shallow. Pack like a
| backpacker. If you land with a lot of luggage, remember
for
| the return home, UPS and FedEx can reduce you load of
| non-essentials for the departure for home.
|
| Today, it was 37-40C depending where you were.
|
|

Jim Macklin wrote:
It was 40 C here in Wichita today, MSL 1332, DA about 4,500.

"Blanche Cohen" wrote in message
| Jim Macklin wrote:
| Just be aware that on a hot day in the Denver area, 35C
is
| possible, even higher on the air above the paved runway.
| That can make the density altitude near 10,000 feet on
the
| surface. Take-off performance and service ceilings will
be
| reduced. Climb gradient will be shallow. Pack like a
| backpacker. If you land with a lot of luggage, remember
for
| the return home, UPS and FedEx can reduce you load of
| non-essentials for the departure for home.
|
| Today, it was 37-40C depending where you were.

True, Jim. But around here, 37C means 9500 DA on the ground.
And it's why I drove to Leadville for sightseeing, while many
of the Colorado Pilots Assoc. Flew to Montrose (MTJ) for
a weekend flyin. Due to DA, I couldn't take my regular 2.2 hour
flight (couple of passes, no big deal -- usually), and the
low-er-land route would have taken me 5 hours (with a stop for
fuel). Not worth it. I've flown into Leadville, but never
got away from the airport. This time -- typical
tourist, and loved it.

The point is that whenever the ambient temperature is above
ISA standard, the density altitude and thus aircraft
performance will be worse. Hot days in Wichita is like a
standard day in Denver and a hot day in Denver is like
Leadville. With a non-turbocharged engine, the service
ceiling may be at the surface.


--
James H. Macklin
ATP,CFI,A&P

"Blanche Cohen" wrote in message
...
| Jim Macklin wrote:
| It was 40 C here in Wichita today, MSL 1332, DA about
4,500.
|
| "Blanche Cohen" wrote in message
| | Jim Macklin
wrote:
| | Just be aware that on a hot day in the Denver area,
35C
| is
| | possible, even higher on the air above the paved
runway.
| | That can make the density altitude near 10,000 feet on
| the
| | surface. Take-off performance and service ceilings
will
| be
| | reduced. Climb gradient will be shallow. Pack like a
| | backpacker. If you land with a lot of luggage,
remember
| for
| | the return home, UPS and FedEx can reduce you load of
| | non-essentials for the departure for home.
| |
| | Today, it was 37-40C depending where you were.
|
| True, Jim. But around here, 37C means 9500 DA on the
ground.
| And it's why I drove to Leadville for sightseeing, while
many
| of the Colorado Pilots Assoc. Flew to Montrose (MTJ) for
| a weekend flyin. Due to DA, I couldn't take my regular 2.2
hour
| flight (couple of passes, no big deal -- usually), and the
| low-er-land route would have taken me 5 hours (with a stop
for
| fuel). Not worth it. I've flown into Leadville, but never
| got away from the airport. This time -- typical
| tourist, and loved it.
|
|