Practice Oral #1 Flashcards
What are the qualifications to become a dispatcher
FAR Part 65.53 - Eligibility Requirements: General
65.55 - Knowledge Requirements
65.57 - Experience or Training Requirements
65.59 - Skill Requirements
What part of the FARs discusses the certification of dispatchers?
Part 65
What causes the weather?
The sun
What 3 things are required for radiation fog to form?
Clear Skies, little to no wind, small temp/dewpoint spread
Is low pressure an area of convergence or divergence? Do winds flow towards the center of the low or away from it? Describe wind movement around a low.
Convergence; flowing inward; counter-clockwise
What type of clouds will you notice along a warm front?
Stratiform (stable) clouds with the possibility of embedded thunderstorms
What does the ceiling do as a warm front approaches?
Gradually becomes lower
Name a few characteristics of a warm front
Stratus cloud; extensive geographical coverage; slow-moving, rime ice; continuous precipitation
What are the stages of a thunderstorm?
Cumulus, mature, dissipating
What approach category is the B737?
Cat C (121-140kts)
What is a dryline?
Moist warm air flowing north from the Gulf of Mexico abuts drier, cooler, denser air flowing eastward. Spawns squall lines and tornadoes in the eastern plains
What are squall lines
Unstable, narrow, non-frontal band of convective activity usually found in advance of a cold front, 25-150 miles advanced of the front
How often are surface analysis charts issued?
Every 3 hours
How often are constant pressure charts issues?
2x daily, 0000z and 1200z
How often are TAFs issued? What is their valid time?
4x daily, starting at 0000z
How often are weather depiction charts issued?
Every 3 hours
What does hatching represent on a constant pressure chart?
Winds of 70-100kts
Where are you likely to find CAT?
In an upper trough on the cold (Polar) low pressure side of the jet stream.
How far apart are the isobars depicted on surface analysis charts?
4 mb
what weather providers are you authorized to obtain weather from? Where do you find it?
NWS, WSI, FSS, Jeppesen. Ops Spec A010
How can you detect a potential for windshear in weather reports and forecasts?
Isobars close together on the charts; or reports of TS; PIREPs, TAFs, CWAs, SIGMETs, AIRMETs
What does the pneumatic system do? Describe how it works.
Compressed bleed air from the engines can be used to start engines; pressurize the cabin, hydraulics and water systems; Heat and cool the cabin; provide anti-ice protection
Do we have anti-ice or deice on the B737?
Anti-ice; hot bleed air (stages 5&9)
If we use anti-ice, is there a performance pentalty?
Yes, the correction is normally found on the bottom of airport analysis page, expression a subtraction of pounds of payload.
What is an MEL, CDL?
MEL - Minimum Equipment List - Authorized to be inop
CDL - Configuration Deviation List - Authorized to be missing
If maintenance advises that DME must be deferred, can we still fly above FL240?
Yes, because the MEL states that we have two and we can dispatch with just one.