A320 Maximum Fuel Temperature
Just another one of those Airbus "You Figure This Out" situations...
Regarding the FUEL TEMPERATURE INDICATION on the A320, on the FCOM 1.28.20 P10 it is mentioned that:"It becomes amber, and ECAM displays a caution, if the temperature goes above the high limit or below the low limit".
Furthermore, on FCOM 1.28.20 P12, in the Warnings and Caution list it further states that the failure title and conditions are:
"L(R) OUTER TK HI TEMP or L(R) INNER TK HI TEMP Fuel temp above:
in outer cell above 60°
in inner cell above 54°".
So far so good, so one reasons that these stated temperatures are the high limits.
Why then would on FCOM 3.02.28 FUEL L (R) OUTER (INNER) TK HI TEMP the temperatures referred be "If TEMP ABV 65 DEC C in outer cell or 57 DEG in inner cell" ?
If the ECAM is triggered that means that something is wrong. Isn't it being a little too precious to be waiting for the temperature to further increase 5° in the outer cell and 3° in the inner cell respectively to start the APU and disconnect the IDG? It just doesn't make sense or am I missing something? So are the 60° and 54° temps just limits to trigger the Master Caution but not the actual temperature limits? It's a minor detail really, but does anyone have a clue on this?
Ayayay caramba, Airbus, ..... You make me loco!