Interview Prep - Technical Flashcards
Situation that tower gave new winds. You are the captain and the first officer would like to put his head down to program the FMS but you have 2 runway crossings to do and a turn to make. What would you say to the first officer?
Since we have a complicated taxi let’s wait to reprogram the box until we are clear of all runways and or we can pull off to the side and tell them we will need a few minutes to get everything set up.
Once you arrive at the departure runway he asked what kind of signs you would see?
Runway designation sign (Red with white numbers)and the ILS critical area (Red with white ILS) and the yellow ladder on the pavement.
What is the weather required to hold short of the ILS critical area?
800-2
He then asked to hear a take of briefing as if you were the captain.
It will be my departure off of runway 27, up to 5000’ runway heading and expect radar vectors to DJB. Any abnormalities prior to 80kts call it out and I will decide to continue or abort, between 80kts and V1 we will abort for engine fire or damage, directional control issue or any other reason we think the aircraft will not fly, after V1 we will fly and handle it as an inflight emergency. It’s VFR today so we will plan to return visually to rwy 18L after dumping fuel wherever ATC will allow us to do that. If we are on fire we will return immediately. If there’s anything you see me doing you don’t like please speak up. Any questions?
What is the screen height for a wet runway and what is the screen height for a dry runway?
Wet Runway = 15’
Dry Runway = 35’
What is screen height?
An imaginary rectangle that you fly thru on takeoff or landing and that everything in the airplane passes thru. Example, the landing gear will cross the runway TH at screen height.
What happens to V1 with a shorter field length?
It gets lower.
How a wet V1 can change balance field length?
V1 may be reduced which will increase accelerate-stop margin.
Are fields always balanced?
No
runway condition: wet, contaminated, head/tailwind, temperature (to be determined by the pilot)
and
1st, 2nd segment obstacle clearance requirements (predetermined by the operator, in rare cases by NOTAM (eg. crane, etc.))
For example if the runway is wet you will need to lower your V1 to allow for more stopping distance but your acceleration-go distance will remain the same thus creating an unbalanced field length. So the ASD you just needed would be greater than the continued one-engine out take off distance to a screen height of 15’ (wet)
Define Vmcg.
Ground minimum control speed is the minimum airspeed at which the aircraft can lose an engine during takeoff roll with the remaining engines at takeoff thrust and can maintain directional control by use of full rudder deflection with NO nosewheel steering.
Can Vmcg be higher than V1?
Vmcg may be equal to, but should not be higher than V1.
If Vmcg is higher than V1, with an engine failure and a go decision, the aircraft would be uncontrollable directionally using aerodynamic controls alone.
Typically V1 is somewhere between 1.05Vmcg and Vr
What is the standard climb gradient in ft/nm during initial departure phase?
200 ft/nm
What are the four segments of the climb?
1st - 35’ AGL (15’ wet) up to gear up
2nd - Gear up to 400’
3rd - 400’ AGL to Vfs
4th - Vfs to 1,500’ AGL
What’s the main reason for using a derate takeoff?
How to derate takeoff?
Reduce engine EGT’s and thus extending engine life.
Assumed Temp - trick the computer that is is warmer outside than what it really is to reduce N1.
Constant derate - a selectable derate in the FMS
After take-off, what must you climb to before initiating any turn?
400’
Define V1
Takeoff decision speed. Engine failure prior to V1 T/O must be aborted, engine failure after V1 T/O must continue.
Where are the touchdown zone lights located on the runway and how far do they extend?
TDZL consists of two rows of light bars on each side of the centerline in the touchdown zone. The system starts 100 feet from the landing threshold and extends to 3,000 feet from the threshold or midpoint of the runway, whichever is the lesser.
Define Vr
Rotation speed or the speed to lift the nose that the aircraft lifts off the ground at Vlof.
Define V2
Takeoff safety speed or best climb gradient speed. It will give you the most altitude increase per mile traveled with the most critical engine inop.
How far apart are the north atlantic tracks?
Minimum lateral separation is 60nm or 1 degree of latitude
What is minimum longitudinal separation along the north atlantic tracks?
Minimum longitudinal separation for aircraft on the same track is 10 minutes flying time.
What is SLOP?
Strategic Lateral Offset Procedures - right offset only of not more than 2nm. Left offset is prohibited
What is the NAT procedure for deviating around weather?
Announce intentions on 121.5/123.45
If less than 10nm maintain altitude.
If more than 10nm offset to the North by descending 300’ or to the South by climbing 300’
If more than 15nm offset and climb or descend by 500’
How wide are the tracks typically?
5nm each side of centerline.
What’s the procedure for diverting off track in the North Atlantic during an emergency?
Announce intentions on 121.5/123.45
Turn 90 degrees left or right of course
Offset 15nm. At 10nm descend 300’, at 15nm descend 500’
What’s the FAF on an ILS?
Glideslope intercept
What’s the FAF on a LOC approach?
Maltese cross
What is a PRM approach?
A precision runway monitor approach. Approaches to runways that are less than 4,300’ apart.
Define QFE. QNE, QNH
QFE - Altimeter setting ref. to airport field elevation. (Rare, China/N.Korea/Soviet)
QNE - Altimeter setting referencing standard pressure - 29.92” or 1013mb
QNH - Altimeter setting of a particular station or local altimeter setting.
Difference between Transition Altitude and Transition Level
Transition Altitude is the altitude you switch from local setting to standard
Transition Level is the altitude you switch from standard to local setting.
