# Accident 20150812015879A: Grumman G-164B, Sac City, IA, August 12, 2015

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 12, 2015, 16:00 local time
- Place: Sac City, IA
- Airport: Sac City Municipal
- Damage: Destroyed
- Phase of flight: Takeoff: Climb Out
- Operating rules: Agricultural (Part 137)
- Operator: 6SRG
- Location: 42.4258° N, 94.9617° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=42.4258&lon=-94.9617&mi=10
- Aircraft: N311AL, a cancelled registration (https://openairdocs.org/deregistered/N311AL-2020-10-03) (OpenAirDocs)
- Registry model: Grumman G-164B (registry code 3952703, https://openairdocs.org/model/grumman-g-164b) (OpenAirDocs)
- Registry engine: Pratt & Whitney R-985-AN-1 (registry code 51659, https://openairdocs.org/engine/pratt-whitney-r-985-an-1) (OpenAirDocs)
- Reported make and model: GRUMMAN G-164B
- Reported engine: P & W R-985-AN-1
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport, flight instructor
- Pilot flight hours: 18,000 total, 1,800 in this make and model, 60 in the last 90 days
- NTSB investigation: [NTSB CEN15LA377](https://openairdocs.org/ntsb/CEN15LA377) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20150812015879A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

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.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN15LA377](https://openairdocs.org/ntsb/CEN15LA377), Aug 12, 2015: Grumman G 164B (N311AL), Sac City, IA, substantial damage. Probable cause: The loss of engine power for reasons that could not be determined based on the available information.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft 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. For accidents, the NTSB's own investigation is the fuller record.

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