RNP Info

Question 1

What are the go arounds missed approach requirements for a RNP approach?

Answer 1

-Outside NPS limits
- Loss of integrity
(UNABLE REQUIRED NAV PERF-RNP, FMC DISAGREE, VERIFY POS)
- Less then 1 Nav display
- one FMC, One MCDU, One PFD and ND, and one F/D
In the event of a left FMC failure, both MCDUs will blank as the data source is not available. This does not constitute a failure of both MCDUs

Question 2

Procedures prior to approach

Answer 2

• Terrain or VSD on at least one display
• verify actual airport temp against chart
• actual airport qnh must be used
• Verify or enter required RNP
• verify ANP is less then desired RNP
• LNAV/VNAV PTH annunciated
• aircraft required equipment is serviceable

Question 3

What is TALQ check and when should it be done ?

Answer 3

Do TALQ through Transition
Terrain ( VSD on one side, Temp)
ANP less then RNP
LNAV/VNAV PTH annunciated
QNH set for airport landing