Nav Flashcards
Name types of precision approaches
- ILS
- MLS
- RNP APCH
- PAR
Name types of non precision approaches
- VOR
- NDB
- ILS localiser only
- GNSS
- SRA
- VDF
Define a precision approach
An instrument approach and landing using precision lateral and vertical guidance with minima defined by Cat of operation.
Define a non-precision approach
An instrument approach and landing which utilises lateral guidance but does not utilise vertical guidance.
Who specifies the acceptable minimum criteria for the continuation of an approach to land?
The airline
By what point of an approach is it recommended that an a/c be stabilised?
1000ft AAl in IMC
500ft AAl in VMC
Otherwise the a/c should go-around.
When is an approach considered stabilised?
- A/C is on the correct flight path
- Only small control inputs are needed to maintain the correct flight path
- A/C is in the correct landing configuration
- Sink rate no greater than 1000ft/min
- All briefings and checklists complete
What controller actions may lead to an unstable approach?
- Late or high rate of descent to intercept the ILS
- Late change in runway resulting in tailwind
- Inappropriate vectoring
- Poor speed control
- Incorrect distances from touchdown passed
- Glide path intercepted from above (BIG NO NO)
- Delayed descent
What other factors can lead to an unstabilised approach?
Adverse weather
Commercial pressure
What are the types of reversal procedures?
Procedure Turn
Base turn
If there is no straight in approach how else can an approach begin?
- A reversal procedure
- Racetrack procedure
- Holding pattern
What type of approaches have DH or DA?
Precision Approach
What is a DH or DA?
Decision Height or Altitude
The point where the pilot must decide to continue the approach or go-around on a precision approach
What types of approaches have MDA or MDH?
Non-precision approaches
What is the distance an aircraft is normally vectored to on an SRA?
2 miles
