Technical data

Section 906
Digital RPM Indicator
Page Date: 4. Februar 2011 906 - 3
Pilot´s Operating Handbook
EXTRA 330LX
906 DIGITAL RPM INDICATOR
906.1 GENERAL
The EXTRA 330LX is as standard equipped with an "P-1000" Digital rpm indicator. Depending
on the category in which the aircraft is operated, one of the following models is used:
P100-230-635-00 (max. 2600 rpm)
P100-230-643-00 (max. 2700 rpm, for aerial work)
.
906.2 LIMITATIONS
When the P100-230-643-00 model is installed, aircraft operation is limited to the acrobatic
category.
906.3 EMERGENCY PROCEDURES
Not affected.
906.4 NORMAL PROCEDURES
Not affected
906.5 PERFORMANCE
Not affected.
906.6 WEIGHT AND BALANCE
Refer to the Equipment List in Section 6 of this Handbook.
906.7 DESCRIPTION AND OPERATION OF THE SYSTEM
The operation of the indicator is straight-forward. After power is supplied to the indicator, the
engine is started, and the self tests are performed, the default display of the engine rpm
appears on the display. The default display is insured via the use of internal timers that will
restore the display to the current rpm even in the event that one of the panel buttons becomes
stuck or defective.
Internally, two independent tachometers watch the pulses received from each magneto. Each
tachometer is accurate to less than 1 rpm and can be individually enabled/disabled via
buttons on the face of the indicator.