Question for MD-11 Drivers
01-22-2010 | 09:51 AM
#11
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A moment please...
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From: Just passin' thru
01-22-2010 | 10:46 AM
#14
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A moment please...
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From: Just passin' thru
01-22-2010 | 10:51 AM
#15
Gets Weekends Off
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No, the TAT probe is on the lower RH fuselage beneath the cockpit. The TAT probe sends an electrical signal to many systems as well as the TAT display on the EAD. The T AMB port is purely for use by the EEC (Electronic Engine Control) or "FADEC Brain"
01-22-2010 | 04:40 PM
#17
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From: MD-11/FO
Thanks for the professional answer. You have a knack for keeping it in "farmer simple" language which is my level of comprehension. We don't have many Pratt equipped MD-11s so we lose our ground school level knowledge on them pretty fast. I knew where the engine inlet probes were located but did not know the relationship of the temp probe and EEC. Is the T AMB port the static port on the left side of the cowling?
01-22-2010 | 05:54 PM
#18
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From: Just passin' thru
Thanks. So from what source do the airplane/auto throttles get temperature data for calculating and setting maximum thrust on T/O?
01-22-2010 | 06:56 PM
#19
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You input a temperature in the FMS (ATIS info). For T/O thrust this is the number used. We used an assumed temperature for a flex takeoff.
After the aircraft is airborne, it uses the probes to detect temperature/conditions to set a thrust limit.
Fedex Method: We check this power setting by using a laptop computer. We input ATIS information into the computer. The FO reads the information on the laptop, the Captain verifies that the numbers match. Some numbers vary, such as V1, in this case the laptop computer V1 speed is edited in the FMS.
So your answer is the temperature loaded into the FMS. Again, this is only for takeoff thrust.
After the aircraft is airborne, it uses the probes to detect temperature/conditions to set a thrust limit.
Fedex Method: We check this power setting by using a laptop computer. We input ATIS information into the computer. The FO reads the information on the laptop, the Captain verifies that the numbers match. Some numbers vary, such as V1, in this case the laptop computer V1 speed is edited in the FMS.
So your answer is the temperature loaded into the FMS. Again, this is only for takeoff thrust.
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