ATPL - NAVIGATION (Latest 2026/2027 Update) | Q&A | Grade A | 100%
Correct (Verified Answers) – Airline Transport Pilot License Exam Prep
Subject: ATPL Navigation – Instrument Procedures, NAVAIDs, Holding, ILS, MLS, GPS,
LORAN-C, and Advanced Avionics
Source: FAA / EASA / ICAO ATPL Syllabus – 2026/2027 Standards
Format: Q&A Guide with Rationale • Operational Knowledge • Flight Test Prep
1: When the approach procedure involves a procedure turn the maximum speed that should be
observed from first overheading the course reversal IAF through the procedure turn is
Correct Answer: C. 200 knots IAS.
1. Procedure turn design is based on 200 knots IAS (or less) to remain within protected airspace.
2. Faster speeds require larger turn radii risking excursion outside obstacle clearance areas.
3. Exceeding 200 knots IAS invalidates procedure turn obstacle clearance.
2: A minimum instrument altitude for enroute operations off of published airways which
provides obstruction clearance of 1,000 feet in nonmountainous terrain areas and 2,000 feet in
designated mountainous areas within the United States is called
Correct Answer: C. Off-Route Obstruction Clearance Altitude (OROCA)
1. OROCA provides obstruction clearance but not navigation signal coverage.
2. Different from MOCA (guarantees nav signal reception).
3. Used for emergency off-route contingency planning.
3: An off-route altitude which provides obstruction clearance of 1,000 feet in nonmountainous
terrain areas and 2,000 feet in designated mountainous areas within the United States is called
Correct Answer: B. OROCA.
1. OROCA appears on IFR Low Enroute charts outside gridded areas.
2. Provides altitude reference when no MEA/MOCA published.
3. Does not guarantee NAVAID reception.
4: What type navigation system is Inertial Navigation System (INS)? A navigation computer
which provides position
Correct Answer: C. by signals from self-contained gyros and accelerometers.
1. INS uses gyros and accelerometers to track position without external references.
2. Dead reckoning system subject to drift (position error grows over time).
3. No ground-based or satellite signals required.
, 5: Pilots should notify controllers on initial contact that they have received the ATIS broadcast
by
Correct Answer: C. repeating the alphabetical code word appended to the broadcast.
1. ATIS code (e.g., "Information Delta") confirms pilot has current weather.
2. Controller then knows no need to repeat weather data.
3. Reduces frequency congestion.
6: An airport may not be qualified for alternate use if
Correct Answer: C. the NAVAIDs used for the final approach are unmonitored.
1. Unmonitored NAVAIDs may fail without warning, making approach unreliable.
2. Alternate minimums require monitored NAVAIDs unless specified otherwise.
3. FAR 91.169 requires certain NAVAID monitoring for alternate airports.
7: During a LORAN approach the receiver must detect a lost signal, a signal blink within:
Correct Answer: B. 10 seconds of the occurrence and warn the pilot of the event.
1. LORAN-C blink alarm required within 10 seconds for approach-certified receivers.
2. Warns pilot of unreliable navigation data.
3. Receiver must alert before approach minimums are reached.
8: Precipitation static problems caused by defective dischargers may include
Correct Answer: A. complete loss of VHF communications, 30 degree compass errors, high-pitched
audio squeals, and erratic instrument readings.
1. P-static from precipitation discharge disrupts avionics.
2. Static wicks bleed off charge; defective ones cause noise and errors.
3. VHF most susceptible; compass errors up to 30° typical.
9: Under the stabilized approach concept, what is the maximum acceptable descent rate during
the final stages of an approach?
Correct Answer: C. 1,000' per minute for either precision or non-precision.
1. Stabilized approach criteria: 1000 fpm max descent rate below 1000 ft AGL.
2. Higher rates increase unstabilized approach risk.
3. Go-around required if descent rate exceeds 1000 fpm at 500 ft AGL.
10: When flying an aircraft with advanced avionics
Correct Answer: B. the pilot should know what autopilot modes are engaged.
1. Mode awareness prevents mode confusion errors.
2. Advanced avionics require active monitoring of flight director modes.
3. Cross-check FMA (Flight Mode Annunciator) regularly.
11: You notice ATC is unusually quiet and one of your VHF transmit lights is illuminated. You
suspect
Correct Answer: B. your VHF transmitter is keyed and you probably have a stuck microphone.
1. Stuck mike blocks frequency for all users.
2. Identify and reseat microphone or switch to another radio.
3. Illuminated transmit light indicates continuous carrier.
Correct (Verified Answers) – Airline Transport Pilot License Exam Prep
Subject: ATPL Navigation – Instrument Procedures, NAVAIDs, Holding, ILS, MLS, GPS,
LORAN-C, and Advanced Avionics
Source: FAA / EASA / ICAO ATPL Syllabus – 2026/2027 Standards
Format: Q&A Guide with Rationale • Operational Knowledge • Flight Test Prep
1: When the approach procedure involves a procedure turn the maximum speed that should be
observed from first overheading the course reversal IAF through the procedure turn is
Correct Answer: C. 200 knots IAS.
1. Procedure turn design is based on 200 knots IAS (or less) to remain within protected airspace.
2. Faster speeds require larger turn radii risking excursion outside obstacle clearance areas.
3. Exceeding 200 knots IAS invalidates procedure turn obstacle clearance.
2: A minimum instrument altitude for enroute operations off of published airways which
provides obstruction clearance of 1,000 feet in nonmountainous terrain areas and 2,000 feet in
designated mountainous areas within the United States is called
Correct Answer: C. Off-Route Obstruction Clearance Altitude (OROCA)
1. OROCA provides obstruction clearance but not navigation signal coverage.
2. Different from MOCA (guarantees nav signal reception).
3. Used for emergency off-route contingency planning.
3: An off-route altitude which provides obstruction clearance of 1,000 feet in nonmountainous
terrain areas and 2,000 feet in designated mountainous areas within the United States is called
Correct Answer: B. OROCA.
1. OROCA appears on IFR Low Enroute charts outside gridded areas.
2. Provides altitude reference when no MEA/MOCA published.
3. Does not guarantee NAVAID reception.
4: What type navigation system is Inertial Navigation System (INS)? A navigation computer
which provides position
Correct Answer: C. by signals from self-contained gyros and accelerometers.
1. INS uses gyros and accelerometers to track position without external references.
2. Dead reckoning system subject to drift (position error grows over time).
3. No ground-based or satellite signals required.
, 5: Pilots should notify controllers on initial contact that they have received the ATIS broadcast
by
Correct Answer: C. repeating the alphabetical code word appended to the broadcast.
1. ATIS code (e.g., "Information Delta") confirms pilot has current weather.
2. Controller then knows no need to repeat weather data.
3. Reduces frequency congestion.
6: An airport may not be qualified for alternate use if
Correct Answer: C. the NAVAIDs used for the final approach are unmonitored.
1. Unmonitored NAVAIDs may fail without warning, making approach unreliable.
2. Alternate minimums require monitored NAVAIDs unless specified otherwise.
3. FAR 91.169 requires certain NAVAID monitoring for alternate airports.
7: During a LORAN approach the receiver must detect a lost signal, a signal blink within:
Correct Answer: B. 10 seconds of the occurrence and warn the pilot of the event.
1. LORAN-C blink alarm required within 10 seconds for approach-certified receivers.
2. Warns pilot of unreliable navigation data.
3. Receiver must alert before approach minimums are reached.
8: Precipitation static problems caused by defective dischargers may include
Correct Answer: A. complete loss of VHF communications, 30 degree compass errors, high-pitched
audio squeals, and erratic instrument readings.
1. P-static from precipitation discharge disrupts avionics.
2. Static wicks bleed off charge; defective ones cause noise and errors.
3. VHF most susceptible; compass errors up to 30° typical.
9: Under the stabilized approach concept, what is the maximum acceptable descent rate during
the final stages of an approach?
Correct Answer: C. 1,000' per minute for either precision or non-precision.
1. Stabilized approach criteria: 1000 fpm max descent rate below 1000 ft AGL.
2. Higher rates increase unstabilized approach risk.
3. Go-around required if descent rate exceeds 1000 fpm at 500 ft AGL.
10: When flying an aircraft with advanced avionics
Correct Answer: B. the pilot should know what autopilot modes are engaged.
1. Mode awareness prevents mode confusion errors.
2. Advanced avionics require active monitoring of flight director modes.
3. Cross-check FMA (Flight Mode Annunciator) regularly.
11: You notice ATC is unusually quiet and one of your VHF transmit lights is illuminated. You
suspect
Correct Answer: B. your VHF transmitter is keyed and you probably have a stuck microphone.
1. Stuck mike blocks frequency for all users.
2. Identify and reseat microphone or switch to another radio.
3. Illuminated transmit light indicates continuous carrier.
