SERS · GRUMMAN AA1 · 2017-08-01 · Phoenix, AZ, USA
Event
NTSB number
WPR17LA175
Event ID
20170801X65228
Type
Accident
Date
2017-08-01
Location
Phoenix, AZ, USA
Coordinates
33.686668, -112.099723
Injuries
Highest injury
SERS
Fatal
0
Serious
2
Minor
0
Uninjured
0
Total aboard
2
Aircraft
Make
GRUMMAN
Model
AA1
Registration
N6216L
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
The partial loss of engine power during initial climb due to the No. 3 cylinder exhaust valve becoming stuck open due to deposit buildup in the exhaust valve stem and guide and the pilot’s exceedance of the airplane’s critical angle of attack while attempting to turn back to the airport, which resulted in an aerodynamic stall.