TC 3-04.5 Flashcards
Dynamic pressure is the difference between _____/______ pressure and ______ pressure.
Ambient/ static
Ram
What DoD document requires a magnetic compass for all flights?
AR 95-1
_______ ________ ___________ is the basis for aircraft control during instrument flying.
Proper instrument interpretation
_______ instruments display immediate attitude and power indications.
Control
________instruments indicate an aircraft’s actual performance.
(Give 4 examples)
Performance
Airspeed indicator, altimeter, VSI, heading indicator
What are the three fundamental skills an aviator requires during instrument flight?
Instrument cross check
Instrument interpretation
Aircraft control
1 nautical mile per hour is equal to _______ miles per hour.
1.15
Low altitude enroute charts are intended for use up to, but not including ____________ feet MSL.
18,000’
Define MEA
Minimum Enroute Altitude.
Lowest published altitude between radio fixes that ensures acceptable navigational signal coverage and meets obstacle clearance requirements between the two fixes.
Define MOCA
Minimum Obstruction Clearance Altitude
Same clearance as an MEA, but only guarantees coverage within 22NM of a radio fix
Lowest published altitude between radio fixes, off-airway routes, or route segments that meets obstacle clearance requirements for the entire route segment and only ensures signal coverage within 22NM of a NAVAID
What does MRA stand for?
Minimum Reception Altitude
What does MCA stand for?
Minimum Crossing Altitude
What does MAA stand for?
Maximum Authorized Altitude
Define OROCA
Off Route Obstruction Clearance Altitude
Provides obstacle clearance within 4NM of a route of 1,000’ in non mountainous terrain, and 2,000’ in designated mountainous areas of the United States.
Does NOT guarantee any signal coverage
You are planning an IFR flight and while planning an approach, need to find out if the NAVAIDs associated with the approach are monitored or not.
-What would be the two primary methods of finding this information?
-Why is it important?
- IFR Supplement and NOTAMs
-If unable to apply the VFR Exception rule in regards to an approach, you will need to plan on for an alternate.
When planning to land at an alternate location during an IFR flight, how do you determine how much fuel and time is required?
Start planning from the MAP of your primary, executing the missed approach procedure, doing one turn in holding, then proceeding directly to the IAP/IAF of an approach at your alternate, and landing to the runway.
IFR reserve is not included in the calculation.
Under what conditions is a procedure turn not required?
-No PT is depicted
-radar vectoring to final
-PT is not authorized
contact ATC when in doubt
What are the air speeds associated with the aircraft approach categories?
Which category(s) can army aviators reduce the minimums for?
A) 0-90 knots
B) 91-120
C) 121-140
D) 141-165
E) >165
minimums can be reduced for Cat A ONLY (including the presence of a COPTER approach)
How much can visibility minimums be reduced for instrument-equipped helicopters?
Reduced by 1/2 the published minimums but no less than 1/4 SM or 1,200 RVR
Reduction of COPTER approaches is not authorized
Clouds with vertical development-such as cumulus, towering cumulus and cumulonimbus-are indicators of what?
Atmospheric instability and possible turbulence
If necessary, an aviator flying in turbulence may request what from ATC?
A Block Altitude Clearance
What is precipitation static and what is its most common cause?
Distortions of radio waves that interfere with normal reception
Caused by static electricity generated on the various aircraft surfaces in flight that are discharged onto other surfaces and/or the air
What is the accuracy of a VOR?
+/- 1 degree, no more than 2.5 degrees
IFR flight will not be attempted if there is a VOR error of :
+/- 4 degrees on ground
+/- 6 degrees while airborne
Reliable DME signals can be received up to _____ nautical miles at ________ ___ ________.
199 NM
Line of sight altitude
For CH47 pilots, when may GPS be used as a substitute for ADF, VOR, and DME receivers?
-flying a DME arc
-flying to or from an NDB or VOR
-determining aircraft position over NDB or VOR
-determining position over a fix defined by NDB bearing crossing a VOR course
-holding over NDB or VOR
The aviator is required to request an amended clearance if ATC issued a clearance that :______________?
Would cause an aviator to deviate from a rule or regulation or place the aircraft in jeopardy.
Describe a Diverse Departure
Climb runway heading to 400’ above departure end of runway, then turn direct to the first filed point and climb to appropriate altitude unless clearance specifies other instructions
Position reports given to ATC should contain the following items:
-ID
-position
-time
-altitude
-Type of flight plan
-next reporting point and ETA
-name of the next succeeding point along flight route
-pertinent remarks
If an inadvertent thunderstorm is encountered, is it typically better to maintain the current course or to execute a course reversal?
Maintain current course ; turning maneuvers could extend the time in the storm and will place greater stress on aircraft components.
inadvertent thunderstorm encounters are not typically large storm cells
request assistance from ATC before an actual distress or emergency condition develops
If an aviator experiences icing conditions, they should attempt to move to an area of known non-icing conditions, areas clear of visible moisture, or to altitudes that are _______ or _______ degrees Celsius.
Below -20 degrees Celsius
Or
Above 5 degrees Celsius
What is the recommended wind drift correction on the outbound leg of a holding pattern?
Three times the correction of the inbound leg in the opposite correction
