Monticello Flying Club Pilot Transition Manual: Mooney M20F
Page 27 of 42
Engine Leaning Information
H
IGH
A
LTITUDE
C
RUISE
Mooney’s are capable of reaching altitudes in excess of altitudes that require
supplemental oxygen and that have other complicating factors. The listed ceiling for our aircraft
is approximately 17,00ft.
The FAA states that supplemental oxygen must be used by the crew
when operating for more than 30 minutes between 12,500 and 13,999 ft.
That is what is required.
However, keep in mind that your physical health condition can amplify the effects of hypoxia
and hypoxia can affect night vision as low as 5,000ft, so you personally might need supplemental
oxygen below 12,500ft. Additionally, ducking below 12,500 for a few minutes doesn’t restart the
clock.
Above 14,000ft, the crew must use supplemental oxygen at all times.
The following
website has some good additional information on hypoxia and many other physiology factors
http://www.faa.gov/air_traffic/publications/atpubs/aim/aim0801.html
.
Some Club members own supplemental oxygen systems that may be borrowed, but that is
done completely independently of the club. The club requires members to follow the FAR’s
related to these issues and if required, use an FAA approved supplemental oxygen system with a
pulse oximeter. The club recommends following the advice on the above link for use of oxygen
below 12,500ft and there are non-approved oxygen systems that can supplement flight below
12,500ft.
An additional issue that may arise at altitudes above the freezing level is ice blockage of
the fuel injection and air induction systems.
If you experience engine problems above the
freezing level, it may be worth getting below the freezing level when practical and if the engine
has stopped, attempting a restart a minute or two below the freezing level if practical.
E
NROUTE
D
ESCENT
A well planned descent can "buy back" much of the fuel used in the climb, along with
pleasing airspeeds, fuel economy and improved engine life. Reduce power by decreasing engine
RPM to the minimum recommended by the engine manufacturer or permitted by the POH. Maintain
