Robinson R66 - Run-Up

JUL 2020 Chapter 5 Inspections Page 5.9B
5-42 Run-Up
1. Clean engine gas path, if required, per RR300 Series Operation and
Maintenance Manual (OMM).
2. Perform Pilot's Operating Handbook (POH) Section 4 “Preflight” checklist.
3. Perform POH Section 4 “Before Starting Engine” checklist.
4. Prior to start, verify rotor brake locks out starter.
5.
Prior to start, review the Cautions and Notes in POH Section 4 “Starting
Engine and Run-Up”.
6. Perform POH Section 4 “Starting Engine and Run-Up” checklist.
7.
Once stabilized idle is reached, disconnect ground power and switch
generator ON. Verify ammeter shows non-zero generator load and GEN
light out. Verify aircraft voltmeter reads 28.0 to 29.0 volts and calibrated
voltmeter indicates 28.2 to 28.8 volts. When complete, disconnect
calibrated voltmeter.
8.
Switch generator OFF. Verify GEN annunciator illuminates, voltmeter
reading decreases but remains at or above 24 volts, and ammeter decreases
to zero.
9.
Switch battery and generator OFF. Verify dual tachometer continues to
function, then switch battery and generator back ON. Ensure avionics
master switch is OFF, and depress annunciator panel Test button. Both
sides of dual tachometer should drop to off-scale low indication while
button is depressed.
10.
With avionics master switch OFF, verify generator continues to supply
power with battery OFF (instruments continue to function, voltmeter
reading remains steady), then switch battery back ON.
11.
Switch avionics master ON, and turn on avionics. Once avionics are on,
verify avionics master controls power to all avionics by switching OFF
then back ON.
12.
Perform annunciator panel test with avionics master ON. Verify all
segments illuminate. Verify dual tachometer continues to function during
test.
13.
Open collective twist grip (throttle) to flight position and allow RPM to
stabilize. Set N2 RPM to 100%. N2 and rotor tach needles must be
within 1% of point-to-point.
14.
Beep RPM full down and verify N2 RPM is 98% or lower. Attempt to
beep RPM full up, but DO NOT exceed 105%. Verify N2 at full beep up
is 102% to 104%. Beep N2 back to 100%.