diff --git a/ADRpy/atmospheres.py b/ADRpy/atmospheres.py
index 1127ce9..efcbf21 100644
--- a/ADRpy/atmospheres.py
+++ b/ADRpy/atmospheres.py
@@ -736,7 +736,7 @@ def eas2tas(self, eas, altitude_m):
 
         eas
             Float or numpy array of floats. Equivalent airspeed (any unit,
-            returned TAS value will be in the same unit).abs
+            returned TAS value will be in the same unit).
 
         altitude_m
             Float. Flight altitude in metres.
diff --git a/ADRpy/constraintanalysis.py b/ADRpy/constraintanalysis.py
index ec0fe84..930e987 100644
--- a/ADRpy/constraintanalysis.py
+++ b/ADRpy/constraintanalysis.py
@@ -1067,7 +1067,7 @@ def powerrequired(self, wingloadinglist_pa, tow_kg, feasibleonly=True):
         trnspeed_mpstas = co.kts2mps(self.turnspeed_ktas)
         if feasibleonly:
             pw_trn_wpn = tw2pw(twreq['turnfeasible'], trnspeed_mpstas, self.etaprop_turn)
-            if all(np.isnan(pw_trn_wpn)):
+            if np.all(np.isnan(pw_trn_wpn)):
                 nanmsg = "All turns are infeasible for the given load factor, speed, and wing loadings."
                 warnings.warn(nanmsg, RuntimeWarning)
         else: