| Msg ID: 2784335 |
Taking off with high humidity +17/-0
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| Author:ITO and no instrument rating.
6/3/2023 5:06:54 PM |
Recently while flying at night I landed at an airport for self service fuel. I had been into this airport many times and often departed the ramp across the runway direct to my destination. This time I did the same but on takeoff at about 15 feet and 30 kts I lost all forward visibility due to high humidity and the windshield fogging over. My initial reaction was to pull back into a hover and land, but I knew there was uneven ground and trees ahead, so I pushed through looking at my attitude indicator for reference and the windshield cleared as I reached vy. I fear had I slowed and attempted to hover the outcome may have been very bad without the required visibility. So lesson learned. With high humidity and small temp dew spread use the runway. During the last few takeoffs I have been looking at the attitude indicator more to have a reference should I ever find myself in a bad takeoff situation again. I hope someone else can learn from this and welcome any techniques others have to share. |
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| Msg ID: 2784336 |
Taking off with high humidity +4/-0
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| Author:Rainforest crunch
6/3/2023 5:37:39 PM Reply to: 2784335 |
Turn the windshield defog on first bubba gump |
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| Msg ID: 2784381 |
French-German equivalent +1/-0
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| Author:An Army Guy
6/4/2023 8:30:31 AM Reply to: 2784336 |
The bad translation if you're in an Airbus helicopter is "De-mist" button/knob. And if you're in an EC130 that blower and/or cockpit heat are crap (i.e. the fan itself is crap for the size of cockpit and the heater doesn't fully heat the cockpit until you sit at Fly for over 5 minutes and/or pick up off the ground (same for an H145). It's not like a 407 cockpit blower that works really well just by itself to clear moisture inside the windshield. Also, some aircraft work better to defog the windshield if you crank the cockpit heat on with the AC on at the same time. Counterintuitive but I've seen it work in an old 206. |
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| Msg ID: 2784338 |
Taking off with high humidity +3/-0
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| Author:If you
6/3/2023 6:03:39 PM Reply to: 2784335 |
have a windscreen blower use it under conditions of possible humidity contamination to the inner side of the windscreen. This is also a subject for instrument approaches down in to a humid environment. Morale of story it is real going both ways - be prepared and take precautions. |
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| Msg ID: 2784364 |
Taking off with high humidity +2/-1
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| Author:always
6/3/2023 9:04:14 PM Reply to: 2784335 |
use the runway at night and turn on the lights. always |
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