1.For the engineers.
What is the function of and the criteria for the cautions F QTY DEGR & F QTY FAIL ?
You mean besides:
http://www.pprune.org/rotorheads/529...ml#post8210003
Code:
These tests have shown - when water is entering the space between the two concentric metal tubes of the probe - it will decrease the output signal (frequency) of the probe. In case of a high concentration of water, the frequency can decrease to such a level that the CAD recognizes the probe as failed – showing either an F QTY DEGR or F QTY FAIL caution on the CAD. Also there is a potential risk that the CAD shows a higher fuel quantity level compared to the actual fuel level within the fuel tank system.
Just a software engineer, but a proficient googler
:
For
EC145 I've found something on 3 - 19 and 3 -20 of
http://helicopterindia.com/yahoo_sit....241202201.pdf
Code:
F QTY DEGR
(MISC)
Conditions/Indications: Failure of one main tank sensor.
Procedure: Set pitch attitude between –3° and +8° before reading the approx. available fuel
quantity, then calculate remaining flight endurance.
CAUTION
THE DEGRADED FUEL QUANTITY INDICATION REPRESENTS THE
MINIMUM FUEL LEVEL WITHIN PITCH ATTITUDE RANGES OF –3° TO +8°
Code:
F QTY FAIL
Conditions/Indications: Failure of the fuel quantity indication system.
CAUTION
THE FUEL QUANTITY INDICATION SYSTEM HAS FAILED.
DO NOT CALCULATE FLIGHT ENDURANCE USING THE FUEL QUANTITY INDICATION.
ACCURATE FUEL QUANTITY INFORMATION IS ONLY PROVIDED BY
THE LOW FUEL WARNING LIGHT ACCOMPANIED BY WARNING GONG.
Procedure: LAND AS SOON AS PRACTICABLE
edit: same thing on EC135
P2+ http://helicopterindia.com/yahoo_sit...2.24193407.pdf
Pages 3 -26, 3 - 27
Code:
F QTY DEGR
(MISC)
Conditions/Indications: Failure of one main tank sensor.
CAUTION
THE DEGRADED FUEL QUANTITY INDICA TION REPRESENTS THE
MINIMUM FUEL LEVEL WITHIN PITCH ATTITUDE RANGES OF –3° TO +6°
Procedure: Set pitch attitude between 0°and +/–1° before reading fuel quantity,
then calculate remaining flight endurance in accordance with that “degraded”
fuel quantity indication.
NOTE In this attitude for endurance calculations conservative fuel quantity is displayed.
F QTY FAIL
Conditions/Indications: Failure of the fuel quantity indication system.
CAUTION
THE FUEL QUANTITY INDICATION SYSTEM HAS FAILED.
DO NOT CALCULATE FLIGHT ENDURANCE ACCORDING THE FUEL QUANTITY INDICATION.
FUEL QUANTITY INFORMATION ONLY BY LOW FUEL WARNING LIGHT ON THE WARNING PANEL AND BY GONG.
Procedure:LAND AS SOON AS PRACTICABLE