Erj 135er Wet Runway
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Erj 135er Wet Runway
Will appreciate if any ERJ135 drivers out there could help me with following performance info. Would like to know if a ERJ 135ER will be able to safely stop within ASDA with an abort just before V1 in following conditions:
Accelerate stop distance available: 7000 feet
Runway slope: Nil
Runway conditions:Wet
Temp:25 degree celcius(and also at 30 deg C)
Airfield elevation: 5500ft
Leg distance: +/-290nm
Passengers: 15( and also with 20)
Fuel: As would be required for leg distance with necessary reserves considered(Alternate 290nm from destination)
What would the decision be on "go - no go" for this flight given the above conditions with possible abort as consideration?(Is thrust reversers factored in?)
Accelerate stop distance available: 7000 feet
Runway slope: Nil
Runway conditions:Wet
Temp:25 degree celcius(and also at 30 deg C)
Airfield elevation: 5500ft
Leg distance: +/-290nm
Passengers: 15( and also with 20)
Fuel: As would be required for leg distance with necessary reserves considered(Alternate 290nm from destination)
What would the decision be on "go - no go" for this flight given the above conditions with possible abort as consideration?(Is thrust reversers factored in?)
Prof. Airport Engineer
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Hi Icus1
I'll take a look tomorrow when I get access to the AFM. The 135 doesn't always have reverse thrust - what runway and carrier are you looking at?
I'll take a look tomorrow when I get access to the AFM. The 135 doesn't always have reverse thrust - what runway and carrier are you looking at?
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For a leg of 290 NM, with 20 pax and 3 crew, I figure a takeoff weight of 15417 kg. At an airport elevation of 5500 feet, that requires 5200 feet of dry runway at 30 deg C air temp. I haven't got the wet runway details, but adding 15% for wet conditions makes the length required 5980 feet. So the ERJ 135ER should be able to safely stop within the 7000 feet ASDA with an abort just before V1.
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Thank you for the reply, appreciate it. I do specifically need to now about wet conditions. I agree that under normal conditions it should be fine. The 15% you talk about, is that specifically for ERJ135's? We operate a smaller jet and under wet conditions we cannot make take off with the runway available at conditions indicated. The runway required for ASDA almost doubles. Just wondering how a certain operator can do it with a ERJ 135 which is a much heavier aircraft.
.
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Icus1, the 15% is a generic figure from the old FAA AC 150/5325-4A. I don't have the specific wet runway figure for the 135.
The 135 is in airline service at a number of airports with runway lengths less than 7000 feet, and carrying larger loads than you described.
The 135 is in airline service at a number of airports with runway lengths less than 7000 feet, and carrying larger loads than you described.
