F152 sideslip with flaps
The change in wording is most likely as a result of the various empenage modifications Cessna made over the years to the C172 eg enlarging the tailplane & extending the dorsal fin. I read somewhere that the dorsal fin extension had a significant effect.
Join Date: Jan 2000
Location: UK/Spain
Age: 62
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A long time since I've flown a 152 but I did my PPL on one and also a good chunk of my hours building.
The POH for the 152 as far as I remember made no mention of not doing sideslips with flaps extended and I do remember during my training doing some quite steep sideslips with flaps extended and having no problems. Note of caution - just because somebody says I've done this x times or for x years and it's never gone wrong doesn't mean they haven't just been lucky so you should check the POH for yourself and I stand to be corrected.
However regarding the application of sideslip to wing down crosswind landing technique, the 152 is one of the few manuals I've come across which DOES recommend that you consider using a reduced flap setting for crosswind landings.
Tinstaafl, I've never come across a POH yet which quotes a crosswind limit, just a maximum demonstrated crosswind component. The reason for this as explained by a manufacturers certification test pilot is that the manufacturer isn't going to go to the time and expense of conducting test flights purely to investigate the aircrafts crosswind limit, so the quoted maximum demonstrated crosswind component is simply the maximum which they happened to encounter during flights testing other performance data.
However you sort of answered your own question. The real crosswind limit of the aeroplane is when you have used all available rudder authority to prevent the yaw induced by lowering the wing, ie at full rudder deflection.
The POH for the 152 as far as I remember made no mention of not doing sideslips with flaps extended and I do remember during my training doing some quite steep sideslips with flaps extended and having no problems. Note of caution - just because somebody says I've done this x times or for x years and it's never gone wrong doesn't mean they haven't just been lucky so you should check the POH for yourself and I stand to be corrected.
However regarding the application of sideslip to wing down crosswind landing technique, the 152 is one of the few manuals I've come across which DOES recommend that you consider using a reduced flap setting for crosswind landings.
Tinstaafl, I've never come across a POH yet which quotes a crosswind limit, just a maximum demonstrated crosswind component. The reason for this as explained by a manufacturers certification test pilot is that the manufacturer isn't going to go to the time and expense of conducting test flights purely to investigate the aircrafts crosswind limit, so the quoted maximum demonstrated crosswind component is simply the maximum which they happened to encounter during flights testing other performance data.
However you sort of answered your own question. The real crosswind limit of the aeroplane is when you have used all available rudder authority to prevent the yaw induced by lowering the wing, ie at full rudder deflection.
'I', yes I realise that. I was more musing on the (coincidental?) match with the demonstrated x-wind limit.
WRT to their recommendation to reduce flap in a strong x-wind, it need not be slip related. Reduced flap means slightly faster landing speeds --> greater control effectiveness and also reduced drift --> reduced control inputs needed to counter the wind effect etc.
When working in the Shetlands and elsewhere I was often landing in 40+kts of x-wind. Reduced flap was one part of getting it on the ground in the conditions.
WRT to their recommendation to reduce flap in a strong x-wind, it need not be slip related. Reduced flap means slightly faster landing speeds --> greater control effectiveness and also reduced drift --> reduced control inputs needed to counter the wind effect etc.
When working in the Shetlands and elsewhere I was often landing in 40+kts of x-wind. Reduced flap was one part of getting it on the ground in the conditions.
