Hi all,
The reason why I would like to know the third RA is because of MMEL34-20. Refer to below.
SYSTEM / INTERVAL/ NO. INSTALLED / NO. REQ'D FOR DISPATCH
2) Indications, C, ㅡ, 2
May be inoperative provided
a) Independent radio altimeters operate normally for both flight crew
members.
b) Approach minimum do not require its use
C, ㅡ, 0
May be inoperative provided
a) Associated receiver/transmitter is verified to operate normally, and
b) Approach minimums or operating procedures do not require its use.
As you know, "ㅡ" symbol indicates a variable quantity of the item installed. So I am very confused because I have seen only two RA indications displayed on Capt side and F/o side. However, MMEL say that the number of RA indications can vary.
Therefore, I guess that it may be related to the third RA.
How do you think?
Last edited by DongJoon Choi; 18th June 2011 at 11:46.