Altimetry Procedures

Question 1

What is the difference between QNE and QNH?

Answer 1

GOM, Ch 1)
• QNE is 29.92 or 1013.2, and is set when passing transition altitude in the climb.
• QNH is the local altimeter setting and is set when descending below transition level. It is an altimeter setting which, when the aircraft is on the ground, will allow the altimeter to indicate the height above MSL.

Question 2

What is QFE and when is it used at Kalitta Air?

Answer 2

(GOM, Ch 1)
• Actual surface barometric pressure not corrected to sea level. An altimeter set to QFE will read zero on the ground.
• QFE, while commonly used in Russian airspace, is not authorized for use at Kalitta Air. QNH must be requested or determined by converting QFE.

Question 3

When crossing the FAF on an approach what is the PNF required to do?

Answer 3

AOM Vol I, Ch NP)
• Verify that the final approach altitude (as briefed) is correct in both altimeters.
• No flags are present on either pilot’s PFD or ND.
• State (Fix Name), Checked.

Question 4

Using the following ILS CAT II/III RWY 25L chart at KLAX describe the proper altimeter bug setting for both the BARO and RADIO altimeters.

Answer 4

AOM Vol I, App A)
• BARO altimeter bug not used for approach (set out of view).
• RADIO Altimeter bug set to published RA of 107’ as DH or AH.

Question 5

Using the following ILS CAT II/III RWY 10L chart at KPIT describe the proper altimeter bug setting for both the BARO and RADIO altimeters.

Answer 5

AOM Vol I, App A)
• BARO bug on DA of 1310”.
• RADIO altimeter bug set below zero (out of view).

Question 6

You are conducting an ILS Category III approach At 1000’ the FMA changes to “LAND 2”. The AH is now a?

Answer 6

(AOM VOl I, App A)

• The Alert Height (AH) becomes a Decision Height (DH).