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FAA Aircraft Dispatcher (ADX) practice questions

240 free questions with answers and explanations.

Practice test
  1. 101.A dispatcher is planning a flight through the North Atlantic (NAT) organized track system. To reduce the risk of collision with aircraft on the same track due to lateral navigation errors, what procedure allows pilots to fly a lateral offset from the cleared track centerline?Navigation and ATC
  2. 102.Under 14 CFR 121.687, which of the following must be included on or attached to the dispatch release for a Part 121 domestic flight?Regulations (Part 121)
  3. 103.An aircraft must clear obstacles requiring a climb gradient of 250 feet per nautical mile. If the aircraft's ground speed during the climb is 150 knots, what rate of climb (in feet per minute) is required to satisfy this gradient?Flight Planning and Performance
  4. 104.A Part 121 supplemental operator plans a flight in a turbine-engine powered airplane (other than turbo-propeller) to a destination where, based on weather forecasts, no alternate airport is required by regulation. Under 14 CFR 121.643, what additional fuel must be carried beyond that needed to fly to and land at the destination?Regulations (Part 121)
  5. 105.A dispatcher is planning an oceanic flight using the North Atlantic Track (NAT) system with no radar coverage. At each compulsory reporting point, what information must the flight crew include in the position report to ATC?Navigation and ATC
  6. 106.A dispatcher reviewing conditions over an open bay near a cold airport observes wisps of fog rising directly off the water surface on a clear, calm, very cold morning. The water temperature is much warmer than the overlying air. This type of fog is best classified as:Meteorology
  7. 107.A turbojet is being dispatched from a runway with a 1% upslope. Compared to a level runway, how does this affect the takeoff distance required?Flight Planning and Performance
  8. 108.A dispatcher analyzing a 500 mb constant pressure chart notices that the height contour lines over the planned route are packed very closely together, in contrast to a widely spaced pattern the previous day. What does this tightly packed contour pattern indicate?Meteorology
  9. 109.A dispatcher is planning a flight into a coastal airport during the late morning. A weather observation shows warm, moist air flowing in from over the ocean directly onto a much cooler land surface, with visibility dropping rapidly to near zero. Which type of fog is most likely forming?Meteorology
  10. 110.A dispatcher is briefing a flight expected to encounter freezing rain below a warm frontal inversion. Which type of structural icing should be expected in this situation?Meteorology
  11. 111.A dispatcher receives a PIREP of moderate rime icing along the route. From a performance standpoint, what is the primary effect of airframe ice accumulation on an aircraft in flight?Flight Planning and Performance
  12. 112.A dispatcher reviewing weather radar reflectivity data notes several thunderstorm cells classified as VIP (Video Integrator Processor) Level 4. According to FAA guidance, what minimum lateral clearance should be maintained from these cells due to the potential for severe turbulence and hail?Meteorology
  13. 113.A dispatcher is flight planning an overwater flight of 1,400 NM. The aircraft's true ground speed proceeding to destination is 350 knots, and the ground speed returning to the departure airport (in the event of a turn-back) is 280 knots. What is the distance from the departure airport to the Equal Time Point (ETP)?Flight Planning and Performance
  14. 114.Using a Skew-T log(P) diagram, a dispatcher determines the convective condensation level (CCL) for a departure airport. The CCL represents:Meteorology
  15. 115.An airport has a field elevation of 1,200 feet MSL. The current altimeter setting is 30.42 in. Hg. Using the rule of thumb that pressure altitude changes approximately 1,000 feet for each 1-inch change in altimeter setting from 29.92, what is the approximate pressure altitude?Flight Planning and Performance
  16. 116.According to 14 CFR 121.463, an aircraft dispatcher who has been on duty may not be scheduled for more than how many consecutive hours of duty in a 24-consecutive-hour period without being given a rest period, unless relief is provided by another qualified dispatcher?Regulations (Part 121)
  17. 117.A dispatcher is verifying the minimum flight crew required for a specific airplane type used in Part 121 operations. Under 14 CFR 121.385, the minimum flight crew is determined primarily by which of the following?Regulations (Part 121)
  18. 118.A turbojet is being dispatched to a destination airport where the actual landing distance available is 8,000 feet. Per the Part 121 60 percent rule, what is the maximum landing distance the aircraft may require for the destination to be legal for dispatch?Flight Planning and Performance
  19. 119.An airport has been designated by the Administrator as requiring special pilot-in-command qualification due to unusual terrain and complex approach procedures. A pilot in command has never landed at this airport before. Under 14 CFR 121.445, which of the following satisfies the qualification requirement prior to operating there?Regulations (Part 121)
  20. 120.An aircraft is cruising with a true airspeed of 350 knots and a fuel flow of 5,000 pounds per hour. What is the aircraft's specific range in nautical miles per 1,000 pounds of fuel?Flight Planning and Performance
  21. 121.A Part 121 certificate holder conducts scheduled passenger service entirely within the 48 contiguous United States and the District of Columbia, using large transport-category airplanes. Under 14 CFR Part 121, this type of operation is classified as a:Regulations (Part 121)
  22. 122.A dispatcher is briefing a captain on approach minimums for a CAT II ILS approach. What decision height (DH) and runway visual range (RVR) apply to this category?Navigation and ATC
  23. 123.A dispatcher is computing maximum allowable takeoff weight for a flight departing a high-elevation airport on a hot afternoon. Although climb-limited and field-length-limited weights would permit a higher takeoff weight, the weight must be further reduced because the calculated ground speed at VR would exceed the aircraft's certificated tire speed limit. What is the primary reason high density altitude drives up ground speed for a given rotation speed?Flight Planning and Performance
  24. 124.A dispatcher reviewing surface observations on the leeward (east) side of a mountain range notes a sudden temperature rise, sharply lower relative humidity, and gusty winds following the passage of air over the ridge. This condition is best described as a:Meteorology
  25. 125.A dispatcher reviewing radar imagery notices a narrow, continuous line of active, sometimes severe thunderstorms forming 50 to 100 miles ahead of and parallel to an advancing cold front. What is this line of storms called?Meteorology
  26. 126.A dispatcher reviewing a route notices the flight will pass near 'Restricted Area R-2508.' What does this designation indicate?Navigation and ATC
  27. 127.A PIREP from a flight in stratiform clouds at -12°C describes ice accumulating as a rough, opaque, milky-white deposit that formed rapidly on the leading edges of the wings. Which type of icing does this describe?Meteorology
  28. 128.A dispatcher reviewing NOTAMs finds one that establishes a Temporary Flight Restriction (TFR) and amends an instrument approach procedure minimum. Under what NOTAM classification would this information most likely be issued?Navigation and ATC
  29. 129.ATC is providing radar separation between two IFR aircraft on approach. The lead aircraft is a Boeing 747 (Heavy) and the trailing aircraft is another Boeing 747 (Heavy). What is the minimum radar separation ATC must apply between these aircraft due to wake turbulence?Navigation and ATC
  30. 130.A dispatcher notes that the enroute temperature at the planned cruise altitude is significantly warmer than the ISA standard for that altitude. Compared to a standard-day at the same Mach number, this warmer-than-standard air will generally result in:Flight Planning and Performance
  31. 131.A TAF for an arrival airport contains the group 'TEMPO 1014 1/2SM FG'. How should a dispatcher interpret this forecast group?Meteorology
  32. 132.A dispatcher reviews an early morning temperature sounding at a departure airport and finds that temperature increases from the surface up to 3,000 feet before beginning a normal decrease with height. What atmospheric condition does this sounding depict, and what surface weather hazard is it most likely to promote?Meteorology
  33. 133.An IFR flight is on an instrument approach in marginal weather when the pilot requests a contact approach instead of continuing the published procedure. Which condition must be met for ATC to authorize a contact approach?Navigation and ATC
  34. 134.A dispatcher is reviewing pilot qualification records prior to crew scheduling. Under 14 CFR 121.383(c), a certificate holder may not use a person as pilot in command or second in command of an aircraft unless that person holds which credential appropriate to the aircraft?Regulations (Part 121)
  35. 135.A dispatcher is comparing conventional RNAV with Required Navigation Performance (RNP). What key capability distinguishes an RNP system from a standard RNAV system?Navigation and ATC
  36. 136.A Part 121 certificate holder operates an airplane type certificated for 44 passenger seats with a maximum payload capacity of 9,000 pounds, and the flight requires at least one flight attendant. Under 14 CFR 121.803, what must be carried aboard this flight?Regulations (Part 121)
  37. 137.A dispatcher is planning a VFR cross-country flight that will pass through an active Military Operations Area (MOA). What is required for the flight to legally transit the MOA under VFR?Navigation and ATC
  38. 138.A dispatcher notes that a proposed route between two city pairs is listed as a Preferred IFR Route in the Chart Supplement. What is the primary purpose of Preferred IFR Routes?Navigation and ATC
  39. 139.A Part 121 aircraft has an inoperative item that is listed in the Minimum Equipment List (MEL) as allowing dispatch under specified conditions. According to MEL provisions, which of the following is required before the flight may be dispatched with this item inoperative?Flight Planning and Performance
  40. 140.A dispatcher is briefing a crew on conditions favorable for persistent condensation trails (contrails) forming behind an aircraft at cruise altitude. Under which conditions are persistent contrails most likely?Meteorology
  41. 141.A dispatcher is briefing a captain on the Minimum Safe Altitude (MSA) circle depicted on an instrument approach chart. What is the primary purpose of the published MSA?Navigation and ATC
  42. 142.A dispatcher is briefing a flight crew on standard rate turns. Using the rule of thumb formula (bank angle = TAS/10 + 7), what approximate bank angle is required for a standard rate turn at a true airspeed of 200 knots?Flight Planning and Performance
  43. 143.A dispatcher receives a report of a sudden wind shift, temperature drop, and gusty surface winds occurring well ahead of an approaching thunderstorm, outside the area of precipitation. This surface boundary is best identified as a:Meteorology
  44. 144.A Part 121 certificate holder plans to operate a turbine-powered airplane configured with 34 passenger seats. Under 14 CFR 121.356, this airplane must be equipped with which collision avoidance system?Regulations (Part 121)
  45. 145.A dispatcher is selecting an alternate airport for a Part 121 flight and the only instrument approach available at that airport is a nonprecision approach. With no other alternate minimums published, what ceiling and visibility must forecast weather meet at ETA for that airport to be listed as the alternate under 14 CFR 121.625?Regulations (Part 121)
  46. 146.A dispatcher reviews the following METAR for the destination airport: 'KABC 151853Z 27015G25KT 3SM -RA BKN015 OVC025 08/06 A2992'. What is the reported ceiling at KABC?Flight Planning and Performance
  47. 147.A dispatcher reviewing current advisories sees an active AIRMET Sierra for the route of flight. What hazard does this advisory primarily indicate?Meteorology
  48. 148.A dispatcher is flight planning a route that transits Reduced Vertical Separation Minimum (RVSM) airspace between FL290 and FL410. Assuming the aircraft is properly certified, what vertical separation minimum applies between aircraft in this airspace?Flight Planning and Performance
  49. 149.A dispatcher is reviewing landing performance for a flight where the destination runway configuration will require a tailwind landing. Compared to a headwind landing, how does a tailwind component affect the required landing distance?Flight Planning and Performance
  50. 150.Under 14 CFR 121.359, a Part 121 aircraft's cockpit voice recorder installed to meet the regulation must be capable of retaining recorded information for at least:Regulations (Part 121)