DGCA Air Regulations: Aeronautical Information Services Questions

Correct answer: B. NOTAM Replace

NOTAMR) = NOTAM REPLACE. It means this NOTAM replaces a previously issued NOTAM. The previous NOTAM is cancelled and this new one supersedes it entirely. Other NOTAM suffixes: NOTAMC) = Cancel, NOTAMN) = New. Always check if a NOTAM has been replaced — you might be looking at an outdated one!

Correct answer: B. Doc 4444

PANS-ATM is ICAO Doc 4444. Memory trick: 4444 — four fours for ATC procedures. Doc 8168 is PANS-OPS flight procedures), and Doc 7333 is about ATS routes. Doc 4444 covers all the ATC procedures like separation, flight plans, and communications.

Correct answer: B. Minimum eye height

MEHT stands for Minimum Eye Height over Threshold. It is the lowest height at which the pilot's eyes can be above the runway threshold during landing. It is used to make sure the pilot can see the runway properly when crossing the threshold. Think of it as the minimum pilot eye level for a safe approach.

Correct answer: B. Minimum eye height

MEHT stands for Minimum Eye Height over Threshold — it is the lowest height at which the pilot's eyes can be when crossing the runway threshold during landing. It ensures the pilot has enough height to see the runway correctly at the crucial moment of crossing the threshold. Different aircraft categories have different MEHT values because pilots sit at different heights above the ground in different aircraft.

Correct answer: A. Upon receipt of any official weather, regardless of content change or reported values

ATIS Automatic Terminal Information Service) is the recorded weather and airport information broadcast that pilots listen to before calling ATC. It is updated every time new official weather is received — regardless of whether the values have actually changed. Even if the new report shows the same weather, a new ATIS is issued. Each update gets a new letter Alpha, Bravo, Charlie...) so pilots can confirm they have the latest information.

Correct answer: C. GG.

In ICAO telecommunications, every message type has a priority indicator — a two-letter code that tells the system how urgently the message needs to be transmitted. NOTAMs Notices to Airmen) and SNOWTAMs snow condition reports) use the priority indicator GG. This means they get high-speed distribution. Remember: GG = Go fast, Get it out — because pilots need this safety information quickly!

Correct answer: C. DOC 7910 – Location Indicators

ICAO DOC 7910 is the official publication that contains the complete list of four-letter ICAO location indicators — codes like VIDP Delhi), VABB Mumbai), EGLL London Heathrow). Every airport and significant ATS reporting point in the world has a four-letter code assigned in this document. DOC 4444 = ATC procedures, DOC 8168 = approach procedures, DOC 7300 = the Chicago Convention itself. DOC 7910 = location codes.

Correct answer: B. The two beacons are supporting the same site, but are not co-located.

When a VOR and DME are frequency-paired but NOT physically co-located, the DME ident ends with the letter Z. This tells the pilot: the DME is paired with the VOR and they work together — but they are NOT at the exact same physical location. Typically used in ILS/DME installations where the DME is near the runway threshold.

Correct answer: B. Minimum eye height

MEHT = Minimum Eye Height over Threshold. It is the minimum height that the pilot's eyes must be above the runway threshold when the main wheels are at the threshold level during a precision approach. Think of it as: how high must your eyes be when your wheels are about to touch down at the threshold? That height is the MEHT.

Correct answer: B. Magnetic

In aviation, wind direction is ALWAYS reported in MAGNETIC degrees — the direction the wind is coming FROM, measured relative to magnetic north. This is because pilots navigate using magnetic headings, so magnetic wind direction can be directly compared to the aircraft's magnetic heading to determine crosswind or headwind components. Surface wind in ATIS, METAR, and tower communications is always magnetic. Upper wind forecasts use true north, but surface wind = magnetic.

Correct answer: A. Minimum Eye Height over Threshold

MEHT stands for Minimum Eye Height over Threshold. It is the lowest height at which the pilot's eyes can be above the runway threshold elevation during a normal landing approach. It ensures the pilot has enough visual perspective to see the runway and land safely. Different aircraft have different MEHT values because the pilot sits at different heights above the ground in different aircraft types. MEHT is used in the design of visual approach aids like PAPIs and VASIs.

Correct answer: B. PANS-ATM Procedures for Air Navigation Services — Air Traffic Management)

ICAO Doc 4444 is PANS-ATM — Procedures for Air Navigation Services: Air Traffic Management. It contains the detailed procedures for ATC including separation standards, phraseology, flight plan procedures, and contingency procedures. PANS-OPS is Doc 8168. Annex 11 covers Air Traffic Services at the Standards and Recommended Practices level.