Small piston airplane accidents in 2001 through 2005 attributed by the NTSB to engine
failure, by hours and years since engine overhaul.
ACCIDENT TOTALS (HOURS SINCE OVERHAUL)
Hours Since Overhaul
2500-2999 3000 or more
;is N TSB data can’t tell us much about the risk of engine
failure beyond TBO, because most engines are voluntarily eutha-nized at TBO. What it does show clearly is that engines fail with
disturbing frequency during their first few years and few hundred
hours in service after manufacture, rebuild, or overhaul.
Obviously, our engines have a failure pattern more like A or F
in Figure 1, with a high risk of “infant mortality” failure.
Would you be comfortable taking your family up in a piston-
powered GA airplane with an engine at five hours since major
ACCIDENT TOTALS ( YEARS SINCE OVERHAUL)
1 to 4
5 to 8
9 to 8 13 to 16
Years Since Overhaul
17 to 20
21 to 24 25 or more
overhaul (SMOH)? At night? Over rough terrain or water? In
instrument meteorological conditions (IMC)? How about at 10
hours SMOH? Or 25 hours SMOH?
If our engines have a failure pattern as in A (bathtub curve),
then overhauling at a fixed TBO becomes a two-edged sword.
On one hand, it keeps us out of the presumptive wear-out zone.
On the other hand, it puts us right back inside the infant mortality window where the data shows clearly that engine failure is
You Can Do It Better, Faster, and More Effectively, Using DUATS
Golden Eagle FlightPrep® Software (GEFP)
The Software includes:
• Vector Navigational Charts
• Graphical Weather Overlay
• Graphical TFRs
• Topographical Profiles
• Customized Chart Preferences
• FREE 56 Day Updates
CSC DUATS Superior Services:
• FAA Weather Briefings
• Plain Language Text Weather
• Color Weather Graphics
• Automated Flight Planner
• Flight Plan Filing
• Multiple Pilot Profiles
• Multiple Aircraft Profiles
• Stored Routes
• Preferred Routes
• QICP Approved Secure
Some premium features illustrated
For FREE GEFP software download:
For a FREE copy on CD: 800.345.3828 option 1
To order, visit: www.flightprep.com
or Call: 800.966.4360
Make The Most of Your Flying and
Upgrade Your Golden Eagle FlightPrep®
Get all the easy-to-use free features plus
these premium enhancements:
Golden Eagle Plus®
• Fuel Stop Planning
• Multi-Leg Trip Planning
• Flight Planning Wizard
• Premium Wx-METAR and Wind
• Profile Topo, Airspace, Clouds & Wind
• Weight & Balance
$79.95 One-time upgrade fee!
Fully Integrated EFB. No piecemeal download,
no complicated option, no hassle, no kidding.
• Full Moving Map & Flight Planner
• Position on Charts, Plates & Taxi Diagrams
• In-Cockpit Weather
• TAWS (Terrain Awareness) Display
• 3D HITS (Highway in the sky)
• Glass Virtual Instrument Panel
• Pre-load of Sectionals, TACS, LIFR & Plates
$449.95 One-time upgrade fee!