20150812015879A

Accident · Destroyed

FAA accident report · Grumman G-164B · Sac City, IA · August 12, 2015

Date
August 12, 2015 · 16:00 local
Place
Sac City, IA
Airport
Sac City Municipal
Phase of flight
Takeoff: Climb Out
Operating rules
Agricultural (Part 137)
Operator
6SRG
Damage
Destroyed
Aircraft
N311AL
NTSB investigation
NTSBCEN15LA377
Reported as
Grumman G-164B
Reported engine
Pratt & Whitney R-985-AN-1
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificates
Airline transport, flight instructor
Pilot’s flight hours
18,000 total1,800 in this make and model60 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

According to the pilot, he took off from kski and during the climb the aircraft performance deteriorated at approximately 150 AGL. The instruments were reading normally, but the aircraft was not producing normal power, making the aircraft unable to climb. The pilot stated that power was intermittent until impact with the ground. The aircraft impacted a corn field in what appeared to be a left wing low attitude and flipped upside down. The pilot stated he felt the aircraft may not have lost altitude, but the rising terrain caused the impact. He also stated the aircraft had a "blower" system and believes the reason for the loss of power may be due to a failure of the blower fan.

As the FAA filed it

ACCORDING TO THE PILOT, HE TOOK OFF FROM KSKI AND DURING THE CLIMB THE AIRCRAFT PERFORMANCE DETERIORATED AT APPROXIMATELY 150 AGL. THE INSTRUMENTS WERE READING NORMALLY, BUT THE AIRCRAFT WAS NOT PRODUCING NORMAL POWER, MAKING THE AIRCRAFT UNABLE TO CLIMB. THE PILOT STATED THAT POWER WAS INTERMITTENT UNTIL IMPACT WITH THE GROUND. THE AIRCRAFT IMPACTED A CORN FIELD IN WHAT APPEARED TO BE A LEFT WING LOW ATTITUDE AND FLIPPED UPSIDE DOWN. THE PILOT STATED HE FELT THE AIRCRAFT MAY NOT HAVE LOST ALTITUDE, BUT THE RISING TERRAIN CAUSED THE IMPACT. HE ALSO STATED THE AIRCRAFT HAD A "BLOWER" SYSTEM AND BELIEVES THE REASON FOR THE LOSS OF POWER MAY BE DUE TO A FAILURE OF THE BLOWER FAN.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.