Technical Flashcards
What are the 3 types of hydroplaning?
Viscous - When oil/debris combines with water on a runway, forming an impenetrable layer of liquid your tires can’t break through. Especially problematic on smooth asphalt runways.
Dynamic - when water lifts your wheels off the runway. This usually happens when a wedge of water builds up in front of your tires. Loss of traction or braking.
Reverted Rubber - when your tires lock up, the rubber begins to melt, and trapped water under the tire turns into steam. When it happens, you’re riding on steam, and melting your tires in the process.
What is the airspeed restriction in/around class C/D airspace?
200 KIAS (230 mph) at or below 2,500 feet above the surface, within 4 nautical miles of the primary Class C or Class D airport
What does the circle with a cross symbol represent in the airport plan view?
Airport Reference Point (ARP)
- Center point of an airport, or Geometric center of all usable runways (calculated using coordinates at the ends of all runways)
A crew-member must breathe oxygen above how many feet?
(b) Pressurized cabin aircraft.
- Above 250 need 10 min supply avail. for each occupant
- Above 350 one pilot at the control must wear/use at all times…except
- Below 410 if there are 2 pilots at the control and each is provided a quick don mask (placed on face with 1 hand within 5 seconds, supplying and secured)
What is your clearance limit when cleared for the approach and then you lose comms?
The published hold on the missed.
3 phases of a Thunderstorm:
Cumulus: Updrafts, building clouds, no precip.
Mature: Precipitation begins to fall, unstable air intensifies
Dissipating: Updrafts slow, Anvil forms at top of storm cloud, downdrafts replace updrafts below storm cloud
When do you need an alternate airport?
121.619 - Domestic operations: must list at least 1 alternate airport for each destination airport in the dispatch release. When wx at both the first destination and alternate airport are marginal, at least one MORE alternate must be designated. UNLESS 123 rule!
- 621 - Flag operations: must list at least 1 alternate airport for each destination airport UNLESS -
- the flight is less than 6 hours and 1 hour before/after ETA at the destination airport indicate:
- ceiling of 1,500’ above the lowest circling MDA if required, or 1,500’ above lowest IAP minimum OR 2,000’ above the airport elevation (whichever is greater)
- visibility at least 3 miles, or 2 miles greater than the lowest applicable IAP minimums (whichever is greater)
What is Mach tuck?
When an aircraft enters a potentially unrecoverable nose dive.
- Aircraft transitions through Transonic Region (M0.75-M1.2)
- You reach MCrit (1st molecule of air reaches super sonic speed, creating shockwaves between supersonic and subsonic air molecules)
- As shockwaves become larger, the aerodynamic center on the control surface moves AFT
- Air flowing from supersonic region, through the shockwaves, to subsonic region separates and becomes turbulent, and causes a loss of lift
- To avoid nose-down “Tuck” you must apply more back pressure….but your elevator is now useless as it sit in aerodynamically dead air
What is the most dangerous type of precipitation?
Supercooled Water Droplets in clouds.
Freezing rain/hail -
Can occur along a warm front where a warm air mass overruns a cold air mass.
What is the airway width communication range guaranteed by MOCA?
Airway width is 4 miles either side, MOCA does not have any guarantee on communication.
- (MOCA) The lowest published altitude in effect between radio fixes on VOR airways, off-airway routes, or route segments that meets obstacle clearance requirements for the entire route segment and that assures acceptable navigational signal coverage only within 22 NM of a VOR
Define V1
The MAX speed in the TO at which the pilot must take the FIRST ACTION TO STOP the airplane within the accelerated stop distance, or the MINIMUM speed in the TO following a failure of the critical engine at Vef at which the pilot CAN CONTINUE the TO and achieve the required height above the TO surface within the TO distance
What is coffin corner?
The altitude(s) just below where Vs and MMO of an aircraft meet.
True Airspeed (and TRUE Stall Speed) increase with altitude, & the speed of sound decreases as temperature decreases.
When is the ILS Critical area is in effect ?
- When instrument approaches are being conducted
- Vis is 2 miles or less and/or
- Ceiling 800 feet or less
What color are runway Centerline lights?
White until the last 3,000 feet of the runway.
The white lights begin to alternate with red for the next 2,000 feet, and for the last 1,000 feet of the runway, all centerline lights are red.
What does pressing the fire button do?
Activates shutoff valves for fuel and hydraulics, trips generator off via generator relay, arms fire bottles
What is the max takeoff weight of the CRJ-200, 700 and 900?
CRJ 200 - 53,000 lbs
CRJ 700 - 75,000 lbs
CRJ 900 - 84,500 lbs
What is the DH?
Decision Height. The altitude AGL at which a decision must be made to continue on an ILS or execute the missed approach.
What would you do if you hear a loud bang and lose power after V1 with over half an 11,000 ft runway left?
Continue the takeoff, fly the airplane, and follow the appropriate procedure. Declare emergency with ATC.
What would you do if the Captain continued below minimums?
Call out “below minimums” and ask if they have the runway. If no confirmation, call the missed approach and go around.
What is exemption 3585?
- Allows operations when forecast’s conditional remarks (BECMG, PROB, TEMPO) are below dispatch minimums.
- Under the terms of the exemption, the flight will be required to have not one, but two alternates.
Centerline lights are what colors?
White with the last 3,000 feet alternating red and white and the last 1,000 feet red
What is Dutch Roll? How do you counteract Dutch roll?
—A combination of rolling and yawing oscillations that normally occurs when the dihedral effects of an aircraft are more powerful than the directional stability.
Coordinated opposite rudder in the direction of the roll.
Yaw damper, or opposite control inputs to counteract.
What type aircraft is susceptible to dutch roll?
Swept Wing…
Max airspeed Below 10,000?
- 117 - 250 Knots (288 mph) Indicated unless otherwise authorized
(d) If the minimum safe airspeed for any particular operation is greater than the maximum speed prescribed in this section, the aircraft may be operated at that minimum speed.