IDAC Air Traffic Controller (CTA) case studies
IDAC Air Traffic Controller (CTA) · Put your knowledge to work in context.
The IDAC Air Traffic Controller (CTA) licence is the credential issued in the Dominican Republic for professionals who provide air traffic control service - tower, approach, and area control - under the Instituto Dominicano de Aviación Civil. It is meant for candidates who have completed approved ATC training and now need to demonstrate, to the civil aviation authority, that they can apply the rules and procedures of the profession safely and consistently. The IDAC Air Traffic Controller (CTA) case studies are 5 cases and about 3,836 words.
1Non-RVSM MEDEVAC Requesting a Level Inside the RVSM Band
It is 2140Z in the Santo Domingo FIR. A foreign-registered Learjet 45 on a MEDEVAC mission with a surgical team aboard checks in at FL290 and requests FL360 to top an embedded cumulonimbus line topping about FL340.
773 words, about 4 min2Compressing Sequence on the ILS: A Slow Cessna in Front of a Jet Stream
Santo Domingo Approach is sequencing four arrivals for ILS RWY 17 in VMC, wind calm, no cloud below 5,000 ft. In order along the downwind: a B737 12 nm from touchdown at 180 kt, an ATR-72 at 20 nm at 170 kt, a Cessna 402 at 25 nm at 140 kt, and a Learjet 35 at 35 nm at 250 kt.
738 words, about 4 min3SPECI, Wind Shear and a Falling QNH at Las Américas
At 1930Z a line of thunderstorms from a tropical wave lies 15 nm west of Las Américas (SDQ) and is moving east at 20 kt. The 1925Z SPECI reads: wind 190/15G35 kt, visibility 1,500 m in heavy thunderstorm rain, SCT012CB, temperature 29 °C, dew point 25 °C, QNH 1001 hPa, with a TEMPO trend.
828 words, about 4 min4Radar Head Failure in the Middle of the Afternoon Peak
At 1445Z the Santo Domingo approach radar head fails. The display freezes on a coasted picture and the Mode S processor drops flight-plan coupling on about half the tracks; the standby radar at the alternate site is not yet commissioned.
747 words, about 4 min5Smoke in the Cockpit at FL370 with Opposite Traffic Below
At 0310Z a B757-200 freighter, 130 nm east of Las Américas (SDQ) at FL370 on a westerly track, transmits: 'Mayday, mayday, mayday, smoke in the cockpit, request immediate descent and diversion to Santo Domingo.' The crew has donned oxygen masks and reports the smoke is increasing. An A330 is at FL350, 60 nm ahead of the B757 on the same airway, eastbound; a B777 is at FL350, 25 nm behind, also westbound.
750 words, about 4 min