Cessna 421C Flashcards
what is VYSE
Blue line: 111 KIAS
What is VSO
77 KIAS
What is VS1
86 KIAS
What is MVC without/ with VGs
80 / 73 KIAS
What is VLO/ VLE
176 KIAS
What is VFE 15
176 KIAS
What is VFE 15-15
143 KIAS
What is VNO
201 KIAS
What is VNE
240 KIAS
What is the max demonstrated cross wind
17
What is normal approach speed
86-100 KIAS short final
What are the power settings (MP, RPM, Mixture, Fuel pump) for Take off?
MP: 39.0”
RPM: 2235
Mixture: Low
What are the power settings (MP, RPM, Mixture, Fuel pump) for NORMAL CRUISE CLIMB
MP: Per cruise Chart
RPM: 1600-18000
Mixture: For > 65% power: Lean to peak EGT then 75* ROP
LEAN FOR POWER CHANGES, NOT ALTITUDE
Fuel Pump: LOW only to purge fuel vapor
What are the power settings (MP, RPM, Mixture, Fuel pump) for ECONOMY CRUISE CLIMB
MP: Per cruise Chart
RPM: 1600-18000
Mixture: For < 65% power: Lean to peak EGT.
Lean of Peak “LOP” ops permitted with matched
injectors and engine monitoring system.
LEAN FOR POWER CHANGES, NOT ALTITUDE
Fuel Pump: LOW only to purge fuel vapor
What are the power settings (MP, RPM, Mixture, Fuel pump) for DESCENT?
Maintain cruise mixture setting during descent
unless engine roughness experienced.
DON’T GO FULL RICH AT LOW POWER
CRUISE SETTINGS:
MP: Per cruise Chart
RPM: 1600-18000
Mixture: For > 65% power: Lean to peak EGT then 75* ROP
LEAN FOR POWER CHANGES, NOT ALTITUDE
Fuel Pump: LOW only to purge fuel vapor
What are the power settings (MP, RPM, Mixture, Fuel pump) for DESCENT?
MP: 20- 25”
RPM: 1950 - 2235
Mixture: REMAIN LEANED
Fuel Pump: LOW
What are the power settings (MP, RPM, Mixture, Fuel pump) for GO AROUND?
MIXTURE ==> PROP ==> THROTTLE
MIXTURE: FULL RICH
PROP: FULL FORWARD
THROTTLE: 39.0”
FUEL PUMP: LOW
What engine is on on the 421C
Continental GTSIO-520
What is the turbo “critical altitude” on the Cessna 421’s Continental GTSIO-520?
20K feet is the Critical Altitude for the
turbocharger waste gate where it is fully closed by this altitude and above
What do the letters in GTSIO-520 stand for?
GTSIO-520 stands for “Geared Turbo-Supercharged Injected Opposed 520 cubic inch”.
What is the gear ratio in the Cessna 421’s GTSIO-520?
The gear reduction box mounted on the front of the block has a 1.5:1 ratio which causes the prop to
spin slower than the engine crankshaft.
At full power, how fast are the props spinning
When at full RPM, the prop spins at 2235 RPM (C model only vs 2275 forA&B) while the engine is at almost 3400 RPM (3500 for A&B).
How much oil does the GTSIO-520 have?
Continental 520s hold 12-13 quarts in the sump and 1 quart in the filter. 9 quarts is the minimum for
operation. Per the POH, fill to 10 quarts for up-to 3 hour flights and FULL for longer flights.
What is the most common oil used in the GTSIO-520?
20W50 is a common multi-viscosity oil for these engines
