The July 5, 2007 Weekly Accident Update is now posted at <> .

¡°The goal of accident investigation is not to solve accidents for its
own sake, but to improve safety by preventing [future] accidents.¡± -
Air Line Pilots Association

FLYING LESSONS suggested by this week¡¯s report:

Lessons learned from Beech experience are universal. Consider them in
any make and model of airplane.

** Aircraft slip limitations exist for a real-world reason-in many
cases fuel flow may be interrupted in an extended slip, especially with
less-than-full tanks or if the selected tank is ¡°downhill¡± in the

** Even ¡°minor¡± damage in unreportable mishaps has the potential to
cause the airplane to be ¡°totaled,¡± because repair costs and the
declining market value of many general aviation airplanes make repairs
so expensive it¡¯s cheaper for insurance to write off the insured value
of the airplane. Adequately insure your airplane, and take active
steps to avoid even ¡°minor¡± mishaps to keep your airplane, and the
fleet as a whole, flying.

** Extended periods of inactivity between flights can result in fuel
contamination and/or unseen damage to fuel system seals and components
that might be contributors to an engine failure. Thoroughly flush fuel
tanks and systems that have been in long-term storage, ensure system
integrity before flight, and watch closely for the first signs of any
engine troubles in the first few hours of flight following a long
¡°down time¡±.

** Density altitude continues to be a factor in summertime accidents.
Consider delaying flight until cooler times of the day, and/or to
reducing aircraft weight to the minimum safely possible, for high
density altitude takeoffs.

** Wide spreads between temperature and dew point, exceeding about
30¢ªF, often correlate with low altitude wind shear that can be
disastrous to an aircraft if encountered on takeoff or landing.

** Although it¡¯s legal in the U.S. to fly VFR above a solid cloud
deck, all too often conditions above the clouds deteriorate and the
pilot cannot avoid entering instrument conditions. Pilots not trained
and current in IFR flight, or flying airplanes not certified and
current for IFR, should avoid overflying all but the narrowest areas of
broken to overcast clouds to ensure a visual escape route at
destination, if conditions worsen, or if aircraft or passenger needs
force an unplanned descent.

** Attempted visual flight into instrument conditions is almost
universally fatal, with roughly half the accidents involving a pilot
who is instrument rated.

** As many as one in four general aviation accidents occur in the first
12 months of aircraft ownership. Pay special attention to aircraft
condition and pilot capability in type during the early stages of
flying a new-to-you aircraft.


It¡¯s busy, it¡¯s extremely distracting, and for early arrivals it¡¯s
only two weeks away-it¡¯s EAA AirVenture at Oshkosh, and all the
excitement invites both show-offmanship and get-there-it is. Every
year there are numerous minor and sometimes one or more major mishaps
arriving at or departing The Greatest Airshow on Earth. If you¡¯ve not
already brushed up on your flying skills to meet the very real demands
of AirVenture now is the time to prepare. To help, here are links to
my 2006 series of articles on Flying to Oshkosh:

Know the NOTAM <>

Have a Backup/Fill ¡®er <> Up

Airspeed Control <>

Aim for the Dot <>

More Eyes in the <> Cockpit

Crosswinds-and Tailwinds-on <> Landing

Flying to Oshkosh-Final <> Thoughts

Attend the Mastery Flight Training forum ¡°What Really Happens in
IMC,¡± on Wednesday, July 25th at 2:30 pm in EAA Pavilion 4.


** A V35 landed gear up¡¦.

** A K35¡¯s engine quit and the pilot ditched in a lake¡¦.

** A Baron 58¡¯s gear collapsed¡¦.

** A V35B hit a runway light¡¦.

Also included this week is a reader¡¯s update on a recent T-34 engine
failure in flight, and NTSB reports on a B36TC stall on takeoff and an
A36TC uncontrolled impact with terrain, all previously reported in the
Weekly Accident Update.

For more information, commentary and analysis see the Beech Weekly
Accident Update link at <http://www.thomaspturner.
net/> .

Fly safe, and have fun!

Thomas P. Turner, Master CFI

Mastery Flight Training, Inc. <>

I welcome your comments and suggestions. Contact Mastery Flight
Training, <> Inc.

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