Crosswind component for 170A (moved from Hangar)
Posted: Sat Nov 06, 2004 3:09 pm
I can't find the max crosswind component for my 170A anywhere in the operator's manual. Does anyone know what it is?
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Crosswind component for 170A (moved from Hangar)
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Posted: Sun Nov 07, 2004 5:02 am
The C-170 airplanes were built before the crosswind component was a requirement.
Posted: Sun Nov 07, 2004 6:19 am
I believe the the FAA design requirement is 20% of Vs. 170B Vs is 58 mph, so the max crosswind component would be 11.6 mph. The main factor is pilot skill. Experienced, skilled pilots can handle much more, but a 5 mph crosswind can make a newly minted tailwheel pilot sweat bullets.
jc
jc
Posted: Sun Nov 07, 2004 11:20 pm
JC
I can hardly beleive the 170B would only have a max crosswind component of 11mph. Perhaps your formula is what is used to determine the demonstarted crosswind compoment and if thats the case it wouldn't be a limit just what was demonstrated.
I can hardly beleive the 170B would only have a max crosswind component of 11mph. Perhaps your formula is what is used to determine the demonstarted crosswind compoment and if thats the case it wouldn't be a limit just what was demonstrated.
Posted: Mon Nov 08, 2004 1:07 am
Yea, I agree. I was assuming that dyeoman was reffering to the demonstrated crosswind component, and then I reffered to it as the max crosswind component 
. There is no published demonstrated crosswind component for 170's. Demonstrated crosswind component is not the maximum crosswind that a aircraft can handle, it's just what the factory demonstrated. In a 172 the maximum demonstrated cross wind component is 15 knots. We all know that a skilled pilot can handle more. As far as I know, no small aircraft have a published max crosswind component, only a demonstrated crosswind component.
From the AOPA:
Demonstrated crosswind component is a favorite test question for examiners to ask. It is the highest wind observed during certification testing of the airplane, not what it is theoretically capable of handling or a limitation governing the aircraft's operation. As a guideline, particularly for new pilots, consider it limiting. To find the number, look in the pilot's operating handbook under "speeds for safe operation." Some of the numbers are impressive: for the Cessna Skylane RG, 18 knots; Beech Sierra, 17 knots; Bonanza V35, 17 knots; Cessna 172, 15 knots.
If your aircraft was built before 1975, you probably won't find the speeds in the POH. But there's an alternative. A 1965 copy of the FAA's Flight Training Handbook recommends using 20 percent of the stall speed as the maximum allowable, so an aircraft that stalls at 60 knots can handle a direct crosswind of 12 knots.
jc
. There is no published demonstrated crosswind component for 170's. Demonstrated crosswind component is not the maximum crosswind that a aircraft can handle, it's just what the factory demonstrated. In a 172 the maximum demonstrated cross wind component is 15 knots. We all know that a skilled pilot can handle more. As far as I know, no small aircraft have a published max crosswind component, only a demonstrated crosswind component.From the AOPA:
Demonstrated crosswind component is a favorite test question for examiners to ask. It is the highest wind observed during certification testing of the airplane, not what it is theoretically capable of handling or a limitation governing the aircraft's operation. As a guideline, particularly for new pilots, consider it limiting. To find the number, look in the pilot's operating handbook under "speeds for safe operation." Some of the numbers are impressive: for the Cessna Skylane RG, 18 knots; Beech Sierra, 17 knots; Bonanza V35, 17 knots; Cessna 172, 15 knots.
If your aircraft was built before 1975, you probably won't find the speeds in the POH. But there's an alternative. A 1965 copy of the FAA's Flight Training Handbook recommends using 20 percent of the stall speed as the maximum allowable, so an aircraft that stalls at 60 knots can handle a direct crosswind of 12 knots.
jc
Posted: Mon Nov 08, 2004 3:29 pm
The max demonstrated crosswind component of a B-model is 22 KNOTS!! (MY non-green B model. Using less than average pilot technique.) 
Do not try this at home. Your results may vary.
Do not try this at home. Your results may vary.